Lt1 optispark fix. MAKE SURE the hoses are going to clear the belt.
Lt1 optispark fix. Optispark Problems Lt1 yes it’s availableListed 29 minutes ago in Elizabethton, TN Aug 3, 2017 · Still the LT1 is a good engine, beside the opti which is just a distributor the only other big issue I can recall having is intake gasket leaks. I had some what similar problem with my 95 lt1, Went to start it after being stored over the winter, started missing like the timing was off and would just die. 1992 and 1993 LT1 Engines (First Generation Optispark & ECM) Optispark: The Optispark ignition system is an optical distributor mounted at the front of the engine, driven off the camshaft. Any ideas? Aug 25, 2010 · C4 Tech/Performance - ^^ The official optispark preservation thread ^^ - So you're driving an LT1 ey? Noble cause given the Achilles heal nearly every LT1 owner will deal with at one point in their car's life, the OPTISPARK! Designed as an UPGRADE to the type of ignition systems which GM became famous for, the general Jul 23, 2014 · The Optispark is a unique ignition system found primarily on GM's venerated LT1, LT4 and L99 V8's from 1992 to 1997. I did put on the water pump, connect the air pump or the fans Aug 21, 2009 · i have a 1994 z28 camaro with a LT1 and about a couple of weeks ago i started having problems it would start up just fine in the morning times but run a Sep 5, 2010 · i'm looking for a exploded diagram of an optispark, not an exploded optispark :) looked on shoebox's site didnt seem to find one. But now, it just cranks and Oct 21, 2012 · It won't make a difference the opti is keyed so were ever the motor / cam stopped so did the opti spark line the keyed slot up and slide it in . As heat builds under the hood you first notice a minor misfire, then stalling occurs. I have to say, this kit was well worth the time and money spent on it. I've replaced the opti spark, ICM, ignition coil, the CPS and now just had a new PCM installed. The final product came to be a 28 page double sided document with close up detail shots, and detailed text on testing each sensor, and it appropriate reading. All signs pointed to a faulty distributor. Surely there has to be Aug 11, 2002 · My question is whether anyone has any information about dumping the optispark and converting to the rear cam drive distributer and using fi. I am going to change it out this weekend. its had a hard life in my Aug 2, 2010 · The accell opti should be sealed, it was only the early Chevy ones that had the problem, they fixed it in later years. Jun 21, 2011 · This post is completely edited because of misinformation. Mar 28, 2007 · I have a friend with a '92 LT1, and I'm trying to give him some long distance support. Here are the symptoms: Car always starts right up. What I Jun 23, 2006 · C4 Tech/Performance - Code 16 Low res. Why didn't GM make the LT1 with a standard HEI distributor or a spark pack for each bank like they do on the 6 cyls. Oct 30, 2022 · If the description above seems familiar, maybe the optispark component in the engine is failing. Both cars were retired at 160,000 miles but have been sitting for well over a year. Has been running great since. Ran like a charm before, really no issues. Let’s find out what it is and how to diagnose and fix C5 Opti Spark problems via this article! What Is A C5 Opti Spark? The term Opti Spark refers to the ignition distributor, which possesses an optical trigger feature. I have shopped around and found the MSD cap and rotor for about $15 Jul 19, 2011 · C4 Tech/Performance - 94 LT1 Missfire-How did you fix it? - OK guys, 94 Vette, 6 spd, missfiring under load. I think I did it the wrong way. Code 36 the high res code will allow your car to run, but starting may be difficult and performance poor when it starts. This comprehensive kit eliminates the guesswork and multiple trips to the parts store by including everything needed for a complete front-end LT1 engine refresh. Also in the sticky threads of this section is the diagnosing the optispark video you should watch. I used the DIY harnesses to wire everything up to my sensors and signals are coming in with reasonable values. Code 16 opti low res will have you dead in the water unless its intermittent, then you will only be dead in the water when the code is active. Apr 20, 2012 · I currently have an advance auto parts opti in it now but I use the stock Mitsubishi cam sensor that originally came with the factory GM opti. got less then 1200 miles and the Optispark failed. Always remember o check for compatibility with your engine before buying an Optispark to make sure that it will fit properly. You don't say what your opti problems are, but it would be better to try and correct that, IHMO. A friend advised me about the problematic Optispark, so I did some Googling and learned why, as well as how to eliminate or minimize the problem before it starts. He has done an excellent dissection of an Optispark distributor which appeared on 1992 - 1996 LT1 Corvettes. I have used a stock advance auto parts opti cam sensor before and the car ran like crap. The differences between the 1992-1993, 1994-1995, and 1996 LT1 engines primarily involve improvements in reliability, emissions control, and diagnostics. might have been looking in the wrong place. Sep 13, 2023 · It is compatible with the Optispark LT1 Chevy Camaro Caprice Corvette. Has fuel. Jan 30, 2011 · All, I have taken several days & hours culling down the pertinent information that was listed in the YouTube video titled: LT1 Optispark (ABITS) Distributor Operation and Diagnostics. I'm running full sequential fuel and ignition using the Optispark as the crank and cam trigger source. With high voltage removed from the Opti-Spark, the problems of cap & rotor wear, internal arc-over and cross-firing vanish. The pulses are sent to the PCM via the optispark electrical harness. He had been having problems with this car for many years and replaced quite a few optis (at least that's what he told me). It still uses the opti spark to determine crank position. It will not take the gas and will stumble and backfire Aug 29, 2013 · C4 Tech/Performance - 94 LT1 Missfire-How did you fix it? - OK guys, 94 Vette, 6 spd, missfiring under load. Common problems are the optispark and the water pump. please!!! i spent enough money on my crap box to buy everyone on this forum 5 optisparks. Jan 13, 2003 · early optispark vacuum source My 93 optispark dist. GM training video for the Optispark (ABITS) distributor system used on the LT1 and L99 engines. However, it also chronicles the continuing saga of chasing Feb 17, 2023 · autowiz posted some interesting info on converting opti spark /lt1 to distributor ignition Grumpy Feb 17, 2023 Apr 12, 2010 · The low coolant sensors go bad. Quite simply, the Opti-Spark was a new distributor design that debuted on the 1992 Chevrolet Corvette LT1 V8. Includes USA-built Optispark, plugs, wires, gasket set, thermostat, sensor & bonus tool for your 1993–1994 Corvette LT1. Dec 31, 2017 · C4 General Discussion - Thinking of buying an LT1 for a daily, are opti sparks still a big problem? - I'm thinking about buying a 6 speed LT1 for a daily. 00 IIRC. I got all my powers and grounds to the pcm and are show 12v while cranking over. I paid 239. There used to be a couple of Chevy dealer parts guys who were selling the vented Opti's on Ebay for about 1/2 list price, which several years ago was just shy of $600 (list price), which meant they were selling them for just less than $300. He didn't want to listen to me at first but it was. Jan 26, 2013 · i'd like to share a diy guide i wrote with everyone here are some simple instructions on how to properly install an optispark the first time, without it being 90, 180, or even 720 degrees out of time this will be accomplished withoutthe factory reccommended ac delco infared opti-quantum timing Sep 13, 2010 · The opti is such a kludge. I'm thinking of just going with the stock AC Delco unit since I've got about 70,000 mi on it with no problems. 00$ for the NEW Cardone Opti, and it even came with a new opti harness. If it's an ODB2 (96) check codes, any misfires will be a bad opti. Dec 19, 2015 · I tested to see if the ICM harness was sending power and it all checks out. heres the info for delteq 4 coil system "The Delteq Opti-Direct system solves most of the LT1's Opti-Spark problems by converting to a distributorless system similar to that used on the Cadillac Northstar engines. I have a 94 Formula that has had this work recently done: replaced optispark, plugs, wires, intake gaskets, coil and module. Put the new OPTI on and worked OK except that once it got warm, there was a noticeable miss at all RPM levels. My problems with the opti have been corrosion and not the cam sensor dying. That will be the deciding factor for choosing between cap & rotor replacement or whole opti replacement. They all work on the stock 1995 LT1 PCM. I see a lot brands and prices on different sites. I had just got done doing a head swap on my car and decided to go ahead and install my new cap and rotor I got from Accel but ran into a problem. I don't have any spark on two of the plugs (confirmed it with a timing light). Our Optisparks are built from the component level using premium materials and time-tested techniques — trusted by enthusiasts and professional shops for their reliability and long-term durability. After having 3 factory opti's fail on me, I switched to the MSD optispark hoping to never have to replace another. How to replace opti spark LT1. :wink2: I'm learning as I go with the ins and outs of an LT1, seeing as this is my first. Jul 14, 2005 · Hi everyone, I've got a 94 Trans Am with the LT1, and I've been trying to replace my Optispark unit for the past month. went out and in researching the problem I found a vacuum circulation fix to keep the dist. https://amzn. Explore a wide range of our Optispark Lt1 selection. Perhaps running LT1 fi hardware and re-wiring tpi ecu or after market. This was my first car I ever worked on so I made some mistakes. The wires and plugs are much more. An external reluctor means there is no need to remove the front timing cover!! Swap your hub and your done. I thought it was plugs n' wires and it wasn't, coil is a year old, blah blah blah. Get the best deals for Optispark Lt1 at eBay. 57 from DYI. Basically, I have this issue where my car seems to run fine under load but at idle it has a slight miss. The only bad thing was, the new Opti Harness didn't click into the Engine harness, So Looking at replacing the optispark when I do the waterpump. Mar 6, 2017 · amy help appreciated im a newbie to the lt1 and the fantastic optispark design just marvelous creation. I got it wet 3 days ago, and it still won't start. The clip goes on the alternator bracket. I have 12volts coming out of the coil and 10. is this opti new? Jun 13, 2007 · C4 Tech/Performance - Optispark issues - Time to fix it! - OK, Corvette sitting too long now in the garage waiting on me to act. ? - Could someone tell me which Opti Spark to put on my 92 LT1, 6spd, base model Vette, second one has gone out. Sep 17, 2024 · So I'm assuming my optispark is going out mainly because my 93 firebird lt1 takes awhile to start, have to crank it for a few seconds, and feels like performance is dragging in it, is there a chance that rebuilding the optispark could fix my issues or is getting a new one gonna be the only Aug 28, 2024 · C4 Tech/Performance - 1993 opti spark replacement - Does the water pump have to come off when replacing an opti spark on 93 LT 1? I'm having my opti replaced and if the water pump has to come off I'll probably have that replaced. What was causing problems with the Opti-Spark? In order to understand the problems with the Opti-Spark Ignition, a brief description of the system is necessary. The LT1 powered police cars and taxis, too, and really only had one problem. You will need a modified intake or have to swap to a LT1 carb intake. He was nice and sent me the box Apr 8, 2021 · C4 Tech/Performance - Another LT1 Misfire thread that doesn't have to do with Optispark - Hey everyone. Sep 17, 2013 · Just putting the final touches on an LTCC optispark delete ignition conversion. So if you know me from other LT1 forums, you probably already know the scoop, but if not, here's the problem: I had a 2+ cylinder misfire in my LT1 in a 1995 Z28 A4. If you know what the stock PCM looks for Feb 6, 2010 · My cousin told me he heard of people with LT1's converting the optispark ignition to a coil pack system. So I took the old Mar 5, 2021 · C4 Tech/Performance - Best available Optispark in 2021? - Sorry if this has been asked often, but I?ve been googling for days without a real up to date answer. One line is connected to an engine vacuum source and the other to the air intake after the filter. C4 prices plummet at 100,000 miles but an Lt1 or L98 is good for 200,000. Replace your stock LT1 Optispark distributor with our all-new Summit Racing™ LT1 Optispark I or II distributors. Sep 20, 2011 · For our budget Dirty Bird project, it made the most sense to pick up a used Bailey Engineering LTCC conversion system, which made fixing the Opti issue as simple as laying a new ignition Sep 18, 2011 · If you don't see the proper ac voltage the problem could be the optispark, the harness to the optispark, the PCM or any of the wiring in between. Sep 17, 2007 · Check out how to locate and tune your Opti-Spark ignition system on your LT1. But when it warms up, it will run as I blew out my Optispark driving through some large puddles in a rainstorm. Instead, the issues would come from a number of factors that may be easy to overlook. Ease off and cruises OK. It has a Accell Optispark. The optispark had been replaced already. 36 Aug 22, 2020 · Due to the fact that finding a AC Delco distributor for LT1 is a pain. I just bought a 1986 camaro with a 1997 LT1 swap. This fixed my misfire issues. Torqhead Product Sales - 03/2018Replace your Opti-Spark with an all-in-one crank and cam signal sensing unit. I have been in contact with one of the engineers (Peter Visser) at a company in Virginia cal Jun 6, 2018 · The Optispark Fix Owners quickly realized the issues with their distributor and used a . May 24, 2014 · C4 Tech/Performance - Optispark seal leak on timing cover - My 1993 LT1 engine has a leak in the quarter sized seal where the Optispark shaft slips into through the timing cover. Also had to do the water pump and fix an oil leak. Find all the details inside GM High-Tech Performance Magazine. By modifying the cap and base with tubes and hose, and running one hose to a vacuum source and the other hose to an intake Apr 27, 2021 · I had the exact same issue as this, the crank hub seal was leaking, water pump drive seal and the Optispark seal was crumbling. The opti-spark is basically a distributor which combines a low voltage high and low resolution portion to determine cam position location and a high voltage side which is basically a cap and rotor into a single compact package Oct 31, 2008 · The Opti-Spark system relies on two signals generated by an optical sensor pair and a timing disk. I'm not 100% sure what is wrong with it but I highly suspect the optispark is ailing. The old LT1 was only stuffed into the engine bay of the mid-’90s Camaro and Firebird V8 models, plus the C4 Corvette and smaller displacement versions made it into the Chevy Caprice and Buick Roadmaster. And if missing or intermittent low and high res signals, don't forget the opti wiring harness as a cause of this. The best way to test the optical sensor in the opti is with one of those $70 pc based oscilloscopes found on ebay, amazon, etc. One of which was replacing the stock opti with a chinese knock off (I was broke at the time) It hasn't been running right and won't pass smog. May 7, 2013 · I recently replaced my optispark cap and rotor on my 1996 Firebird Formula. This video will show you how to replace the Optispark distributor on a 1992-1994 C4 Corvette. Another point to make too is that i have had more old school distributors fail on me than the dreaded opti spark. Is the next step the coil or ICM? Car died randomly while driving. Discover the top reasons LT1/LT4 Optispark distributors fail—oil leaks, overheating, and more—and how to prevent damage before it starts. I'm Jan 15, 2005 · Hi, I just purchased a 1994 and a 1995 Caprice 9C1, LT1 at auction from the Police Department. At the heart of this kit is our ventilated Optispark distributor upgrade, a trusted solution backed by over 30 years of testing, refinement, and real-world performance. Measure the resistance of your coil. The hose that has the filter and regulator Replacing the Optispark and water pump on a 1993 LT1 Corvette. I want to put the ’95 on the road first but it runs lousy. Dec 4, 2002 · I have installed a LT1 from a 1993 camaro into my 1991 silverado. Not too many 30 year old cars with the original ignition system. Dec 27, 2022 · C4 General Discussion - 1996 LT1 Opti Vacuum Question - I'm replacing my failed Optispark in my 1996 LT1 C4. Keep in mind that the replacement *is* conducted on a TA and not a Corvette so there may be differences. The "opti" has two parts, a low-voltage optical section and a high-voltage cap and rotor section. I have researched this problem and not really found a solution. May 4, 2020 · Hello All, I have a stock 1994 Trans Am LT1 Automatic. Aug 8, 2011 · Hello, I have three optisparks, 1 is OEM, 2 are MSD. com is Sponsored by: Bailey Engineering LTCC LS1 Coil Pack Install Anyone who has owned an LT1 powered GM vehicle has heard the dreaded word “opti-spark”. MAKE SURE the hoses are going to clear the belt. Anyone ever hear of this and how much does it cost? Is it a better route then replacing the opti? May 14, 2005 · ive heard some bad htings about the optispark system on the LT1's have any of you had problems or do you have any other info to share about them? Oct 1, 2003 · How to make opti-sparks last longer and perform better for LT1 owners. Maf is also connected. As most LT1 owners can attest the Optispark is the Achilles heel to this otherwise excellent power plant. The sensors produce a high-resolution signal of 180 pulses per crankshaft revolution (for ignition system accuracy), and a profiled low-resolution signal. Increased spark energy, extended optispark life. Intermittent SES light, doesn't want to pull lugging at low rpm's, once the tach and some of the other guages just kinda went nuts for a lil Apr 29, 2003 · C4 Tech/Performance - LT1 Distributor / optispark problems, some useful links - A couple of months ago, I did a search on these forums and actually came up with a couple of threads talking about the Optispark. Data incl $625. Much to my dismay the first unit failed within 800 miles of Optispark Troubleshooting November 04, 2015 • optispark • optispark failure • optispark problem • optispark troubleshooting How do you know the Optispark is failing? Let’s envision you are out in city traffic. Thanks. Find top brands, exclusive offers, and unbeatable prices on eBay. A replacement is $45. No problem. Referring to your lumpy idle . Especially if you can get a good price on one. I give a basic overview, show troubleshooting techniques, and tear down the system to show what's involved and why it is Petris Optispark Distributor - Ventilated Upgrade for 1992 LT1 Corvette Replace your 1992 Corvette's original unventilated Optispark distributor with our ventilated upgrade — a trusted solution backed by over 30 years of testing, refinement, and real-world performance. Unlike its predecessors, the Optispark distributor is an optically triggered ignition system much like those seen in high performance and race vehicles. Do I need to remove it to fix it. I’m running a 105,000 mile Lt1 with no issues. I got no spark and no injector pulse. Buy replacement distributor: https://amzn. Now I have a no spark problem. My car has about 112k miles and im going to do some engine modifications so I don't know if I should really replace it or not. 187 drill bit to enlarge the factory drain holes and took a razor blade to the inside of the cap to improve air flow. However, the tests shown don't test for the actual opti low & high resolution pulses. As optispark is widely believed to die from natural causes every 75,000 miles or so I'd like to avoid it if possible. I would certainly Prove Optispark Signals Are Getting To The Coil Coil Continuity Test ICM Cooling Mod Restore Airflow to the Dashboard Vents Use a Fuel Line Disconnect Tool Check Fuel Pressure Problems Fuel Gauge Operation and Testing Route Wires through the Firewall Retrieve Trouble Codes from your BCM (1996-1997) Program Keyless Entry 1993-1995 Nov 19, 2008 · I hope someone can offer insight and suggestions. The first thing that happens is as the cam turns, the optical section of the optispark picks up the signals by the rotation of the shutter wheel. - Car Craft Magazine He has done an excellent dissection of an Optispark distributor which appeared on 1992 -1996 LT1 Corvettes. Here's what I know: I am getting a code 16 Low Resolution Pulse not being read and I think it is the Opti. According to professionals, if your OEM parts have been damaged over the long term because of wear and tear, then this product is the best solution. Below, he describes the replacement of an Optispark distributor on his 1995 Pontiac Trans Am. Run your vacuum lines. Any way to convert the spark method on LT1? Jan 15, 2004 · I have some excellent news for all LT1 engine owner’s who are having Optispark related problems. Not only is there an instant notice in horsepower gain, but also how much noticeably smoother the engine runs at all RPMs. iv had the rotor fall off,explode, loosen up and destroy a new cap and rotor,ive jb welded the screws from backing out and had them snap right in the new opti housing,bought the 500 dollar May 11, 2008 · Vehicles operated in wet climates were even more susceptible to problems. I've got the distributor replacement already, but I am having a LOT of trouble finding a cap and rotor kit. The stock Opti works fine on a Megasquirt 3 in fully sequential mode using the high and low res signals, but both of the MSD versions do not work when the high res system is installed (works in batch fire using low res signal, not sequential using high res). The wiring diagram provides a detailed picture of the entire electrical system of your vehicle, from the starter relay to the engine control module. to/2R3GVyI If the LT1 is stalling, starts then dies or shuts off, check the vacuum lines first! Before replacing the optispark, EGR valve, IAC valve, fuel pump or any other expensive 94. com. I've replaced the spark plugs LT1HowTo. The wires are longer than they need to be. I have a MS3X 3. Jan 18, 2006 · The opti has two functions in the spark process. to/3blxXGH #c4corvette #optispark #corvette Disclaimer Our Oct 11, 2019 · Optispark Distributor 1992 Covrvette LT1? Which one is best? Hey guys, Gotta replace the opti on my 92'. Today, it coughed and backfired, but thats all. Nov 16, 2013 · Hello everyone, I am new to the forums here. Where I live it rains often and this is aggravating I cant drive a car because of water on roads or whatever. 5 95 96 97 OEM LT1 Optispark II Rebuilt Distributor w/MSD kit. I want to change the cap and rotor on my LT1 before I install it. If its around 5000 ohms or so its fine. You’ll note in these steps that LT1*C4 took the time to put the detailed instructions in the pictures. I used an upgraded vented Optispark. Is there a better unit? What is my next step? Thanks, matt Oct 29, 2013 · The consensus on the LT1 and Camaro forums is that the genuine GM units are the way to go. com for $300. I don't get any spark from the coil and I already tried putting an MSD optispark in and it didn't solve the issue. Apr 21, 2010 · You can make the LT1 '92-'94 Optispark setup more reliable than a 95- 96, even with the early distributor configuration. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Mar 20, 2014 · Testing the opti can be done shoebox's site has opti testing. Jul 21, 2016 · C4 General Discussion - How to remove the OptiSpark on your C4 Corvette! - Hopefully this video will help fellow Corvette owners get up the courage to tackle the OptiSpark replacement on their own! If this helps anyone of you, be sure to share it with other C4 owners! T02OKd4-uOU i have a 94 corvette with the early style non vented optispark in it. Oct 15, 2014 · Here's the deal guys, I had to buy one of these guys for my T/A in march because I couldn't afford an OEM, Accel, or Msd unit. Replacing the Optispark and water pump on a 1993 LT1 Corvette. It's been a tough one to fix. Jun 18, 2007 · Hi everyone, I was hoping to get some help on here with my 93' TransAm optispark. But it would be nice if they had a replacement that cost about the same and would permenatly fix it. Any higher than 7000 ohms means you should replace it. There will be a lot of work involved and you lose all the reliability of the stock FI system. What I Feb 5, 2015 · No, the 92 corvettes used the lt1 engine using a type 1 spline drive opti. failure - Picked up the code after scanning and followed Helms instructions testing terminal A at the ECM side of the harness. Same installation steps as replacing the original Opti-spark!! The crank sensor signal comes from an externally mounted 24x reluctor and hub combo. Feb 27, 2022 · Msd Optispark Alternative ideas? camaro distributor lt1 lt1 problems optispark Jump to Latest 13K views 8 replies 6 participants last post by paulxfenchel Feb 27, 2022 D Oct 24, 2010 · My lt1 in my jeep just stopped running one day, no spark at all the coil is about 1 year old, i swapped my spare coil on and it did nothing. just like shoeboxes photo . Routing is difficult on driver side. Tighten the bolts, but do not over tighten. i had to replace the water pump this week and also ended up replacing opti-spark (cap and rotor) and wires (that was fun, not). . I don't ever want to replace the opti again and if I go MSD I will probably buy plugs, wires, and coil along with the adapter harness to complete Opti spark issues are blown out of proportion. What is the best optispark (besides the MSD @ $700) out there? Thank you!!. There are a lot of potential issues for the LT1 optispark, I show how Jan 25, 2020 · Today I'm going over the optispark ignition system of the GM LT-1 engine. I am not Apr 24, 2024 · This curated C4 Opti-Spark and water pump replacement is fully credited to “LT1*C4” and is being presented to our CorvSport community in an unedited format. Decided to either do a full LS engine swap or what Will suggested. It should slide all the way on with no gaps on any of the mounting areas. dry inside like the 95/96's. I just bought a 1995 coupe and realized the ?new? optispark from NAPA that the PO installed was done wrong and had an oil leak. Finally saved enough bread to purchase a premium, DragonFire OPTI from All-Ignition. Each kit includes top-tier compon Aug 25, 2007 · My car is paid for and paying for a new opti everyfew years if needed is not a big deal to me. don't remember the codes but I ended up replacing the optispark ( complete distributor ) and the EGR. I told him, from his description of how the car ran some days, and on others it got warm and then died, that it was the optispark. Feb 12, 2014 · You need to do oscilloscope tests for the high and low resolution circuit. check plug wires for correct location inspect your re assembly work u may have missed or broke a vacuum line . please. Jan 8, 2002 · C4 Tech/Performance - What are the early symptoms of optispark going bad? - My LT-4 has 45,000 on it and seems to drop power when shifting between 1st and 2nd just for a split second. To do so you need an oscilloscope. The PCM processes the signals along with other sensor input and determines the proper time for the coil to fire. I checked the manual and the computer is sending the Feb 23, 2010 · I just installed a fresh 95 F body LT1 in my 56 Chevy. Mar 23, 2009 · my name is oscsr an i have a 1995 corvette,optispark crap out on me month an half ago bough axcell, one from saccitycorvet, in LA CA had some bad wires at coil an icm conectors, fix all thats check with metor, all good mow so my question is what opti to get, whats the best other than a GM unit what is second best to bye. This was the second generation of the GM small block V8 motor and the first major design change since 1955. Or other wiring for ignition system. This will be similar for all LT1 engines including the impala SS and the corvettes of the time. Apr 21, 2010 · haven’t lined the Optispark up correctly with the spline on the shaft. My Delco unit had the bearing already howling so I went ahead and bought a May 2, 2010 · If you just do the water pump and the opti-spark distributor, then it is about 4 hours. Shown on my 1993 Z28 camaro. Oct 8, 2017 · Hey everyone, I'm stumped on this oneI have these two codes that will not go away, P0335 & P0336, fresh rebuild on motor and transmission, runs flawlessly and this is all that pops up, I replaced the crankshaft position sensor, checked for voltage as well and it reads 12 Volts on the power Dec 7, 2006 · if your car has on optispark in it fix it and sell it immediately. I'm wondering weather I should go MSD, Delphi, AC Delco, or any other opti that's out there. It appears that my vented Opti was un-vented at some point to fix another vacuum leak. Had a couple issues during the rebuild process but resolved the issues. The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. I built the engine to a 383 stroker and with the new roller timing chain, I had to replace the distributor. It ran great for over a year, but then I spun a bearing. Jan 29, 2024 · Though the GM Optispark is not without its faults, there are ways to make it more reliable without completely swapping the ignition system. anybody out there know anything about these??? thanks Feb 17, 2009 · Yes it works but it's not exactly an opti spark delete. 00 Mar 30, 2023 · The LT1 OptiSpark Wiring Diagram is essential for any car enthusiast who wants to maintain their vehicle. I ended up wiggling the injectors Jul 26, 2014 · This article was written by Mike Chaney who is a contributor to the F-body Listserv. These distributors feature an aluminum housing with heavy-duty oilite bushings, and a glass-reinforced cap with high dielectric strength and aluminum terminals. Aug 14, 2022 · Hello, I have a 97 Trans am, fresh rebuild. The PCM sends a This video is a How-To for you to DIY replacing your optispark if you have a 90's era LT1 F-body Firebird Trans Am, Camaro, or Corvette. Lt1 Im getting a great spark from the coilbut a very weak spark from opti. May 30, 2024 · The vent kit entails a converted Opti with a vacuum line and a fresh air line to keep moisture and contaminants out of the Opti. The day after the rain I had driven it for a few minutes, then after a moderate Mar 24, 2010 · What is the LT1 in? If it is in a 4th gen f-body, there are real space limitations for a rear mount distributor. The pull up resistors are in the harness as pictured in the instructions under the Optispark distributors and complete service kits for all 1992–1997 GM LT1 and LT4 engines. HEI conversion is scratched off the list. “You get what you pay for” is very much one of those factors. 5 volts when its cranking over I think the optispark just went out one day. im debating on whether to buy a new oem ac delco optispark and install the 96 revised vacuum hose harness with some modifications or just buy the more expensive msd unit. can anyone tell me step by step how its is done. the problem we are trying to fix is this: if i gradually accelerate it does fine, but if you get to 1/4 throttle it pops Upgrade your LT1 car to a modern ignition system. I have a 93 vette I want to sell, and it's been running like crap. I was going to limit my search to 95-96 to get the later optispark (and better seats etc). is there anything I can test through the plug on top without removing the distributor or drive accessories? Feb 27, 2007 · hey do I really need to change the optispark or can I just buy the distributor cap and rotor? looks like there is a big price difference. Three replacement seals in the past month have failed to stop, only slow down the seepage. Feb 4, 2009 · Hello all! First time poster here, i stumbled across this site while looking for info on some recent problems of mine. April 4, 2014 I?m following LT1*C4?s thread as a guide! Titled ?Replacement Optispark and Water pump install (1992 LT1)? Awesome! If the LT1 has a misfire or stalling, check the spark plug wires first! Before replacing the optispark, EGR valve, IAC valve, fuel pump or any other expensive parts. You can get a pc based scope on ebay or amazon for around 70-80 Aug 4, 2011 · Yesterday I helped my buddy replace his optispark in a 1996 LT1 383 stroker. I bought the car not running. Now that I know what an LTCC is, what it does and what it costs, is it still a good fix? Jul 14, 2021 · How reliable is GM's LT1 engine? Learn about common problems including optispark, head gasket faiure, coolant sensors, PCV valves, and more. $150 + shipping- Jeg's has an MSD kit, but it's not available Oct 6, 2008 · obviously an LT1 regulates its own ignition timing and uses knock sensor, and programable CPU input and the crank sensor unlike the L98 with it HEI but both system need you to check /verify they are operating correctly. after installing all new parts, i started the car and it sounded funky. Apr 5, 2014 · C4 Tech/Performance - Another Optispark/LTCC project - I?m finally getting underway on my LTCC, optispark, water pump project. I'm aware of optispark problems, a lot of threads I find are old. Jan 4, 2007 · The Opti-Spark is a distributor with a two track optical position sensor, a keyed drive shaft, an ECM, a single ignition coil and driver and conventional secondary wires and park plugs. the msd claims that it has a fresh air vent. But, before I make the choice, I wanted to see if there are significant benefits if I went with the Accel unit (the MSD, to me, does not seem worth the extra $ as I'm not turning high RPM and don't need the timing adjustment Dec 14, 2012 · So I pulled my old fried opti the other day and got the new one on, and i cant get the car to crank now, all the wires are hooked up correctly and my msd ignition coil is connected and grounded to the heads. After installing the pcm I still have no spark so Check out my series of the LT1 Opti spark replacement. After I reinstalled the engine, I had problems with it Jan 23, 2011 · Hey all. Dec 11, 2010 · how do i fix "code 16" '92 vette? good morning to all! i have a '92 vette. Typical of a traditional SBC. :willy: But upon further investigation on this forum and a camaro forum, with code 16, the car shouldn't have Jan 29, 2023 · C4 Tech/Performance - 1993 Corvette Optispark - Good afternoon everyone, I've decided to replace the optispark distributor. I was told it needed a new optispark, so I went to autozone and they sold me just the base unit (no cap and rotor). Shop now for fast shipping and easy returns! Nov 4, 2009 · C4 Tech/Performance - Replacement Optispark and Water pump install - Part 1 (includes pictures) - A little background story: A few month's back, my '92 developed a very strange hesitation problem which would show up a few seconds after the car started running - only to last a few seconds - then disappear all together. Buy a $12 '96 GM Vette Jan 19, 2018 · As noted by many members, the LT1 and Optispark weren’t just used in Corvettes, the same system was also used in Caprice taxis, which regularly saw several hundred thousand miles. Optispark FAQ January 01, 2025 • Corvette parts • distributor upgrade • ignition system • LT1 • LT4 • optispark distributor • optispark failure • optispark problem • optispark troubleshooting • performance ignition • Petris optispark Why Do Optispark Distributors Fail? Oct 17, 2023 · C4 Tech/Performance - Narrowing Down No Spark - Optispark Diagnosis + Repair - After a stormy night and being caught without it's cover for a few minutes, my 94 LT1 Vette suddenly blew. A simple installation means Sep 2, 2021 · C4 Tech/Performance - Opti Spark, What's the best one to fix the issue. Look at the engine at night for arcing, check the injectors, change the plugs, and finally replace the optispark. 16 disables the fuel injectors, fuel pump, and the ignition module. Warranty AIP OPTISPARK DISTRIBUTORS 2 YEAR WARRANTY When purchased through SacCityCorvette! All Information Is Copied From AIP Electronics Specifications•Manufacturer: AIP Electronics•100% New ConstructionModel: StockSeries Heavy DutyFactory OEM Exterior connection and bolt patternHeavy Duty Sensor Temp Rated to 330 Jul 2, 2011 · I've heard that Optispark has problems when exposed to moisture. Especially at idle Jan 29, 2008 · I need help with this. How To Replace The Opti-Spark And Water Pump On Your C4 Step 1: Disconnect the Find the lt1 optispark wiring diagram and learn how to properly wire your LT1 engine for optimal performance. I have a 94 caprice classic. Cleaned the Optispark carefully, replaced those three seals. i put all wires in correct places and filled liquids (before starting the car, also disconnected the battery before Jul 30, 2007 · I am not looking for a "Best" so I don't end up in the tool shed () but I wondered about the differences in the different packages and why the big cost difference. Jan 13, 2019 · I would appreciate some help troubleshooting my sync loss issue. If the car had a problem it’s been replaced. oawro sxjqz ndryrlt gwbp epogk npy zhtdm mgyx mqrse zllav