Lt1 Optispark Fix, After installing the pcm I still have no s

  • Lt1 Optispark Fix, After installing the pcm I still have no spark so You can make the LT1 '92-'94 Optispark setup more reliable than a 95- 96, even with the early distributor configuration. 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. forewarned. It looks like a fairly good coil pack system. :thumbsup:. 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. Surely there has to be i have an lt1 in my rig. If you know of other options or have experience with any of the 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. I found 12 volts on it from one pin on the black side of the connector to one pin on the gray connector. The only bad thing was, the new Opti Harness didn't click into the Engine harness, So 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. Where is it? The opti is mounted on the front of the LT1, above the crank snout and behind the water pump. How To Replace The Opti-Spark And Water Pump On Your C4 Step 1: Disconnect the Optispark distributors and complete service kits for all 1992–1997 GM LT1, LT4, and L99 engines. The day after the rain I had driven it for a few minutes, then after a moderate 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. I would GREATLY appreciate it if someone could help me Based on this, it would seem worthwhile to improve the durability of your existing Opti-Spark system rather than just replacing it. It’s a true Opti-Spark delete, not an LS swap or full PCM conversion. Here is the deal, I have a LT1 from a 94 caddy, I want to put a set of vortec heads and intake with a distributor in the normal hole in the back-top of the motor. Anyone ever hear of this and how much does it cost? Is it a better route then replacing the opti? Just a little lt1. ? - Could someone tell me which Opti Spark to put on my 92 LT1, 6spd, base model Vette, second one has gone out. After taking the distributor apart I found fluid stains and dirt in it. The "opti" has two parts, a low-voltage optical section and a high-voltage cap and rotor section. I recently replaced my optispark cap and rotor on my 1996 Firebird Formula. To help you get the most life out of your distributor, we're sharing key insights on why Optisparks fail and how to avoid common pitfalls that can shorten their lifespan. Been haunting me forever. Ease off and cruises OK. I'm not 100% sure what is wrong with it but I highly suspect the optispark is ailing. The distributor caps on these engines typically go bad after about 60,000 miles, and the OEM plug wires aren’t the best either. While the car was idling, the green light comes on but the In this video I discuss some of the options available for replacing your failing option spark. Had a couple issues during the rebuild process but resolved the issues. 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. Then I'll drive to the gym which is 2 miles a My question is whether anyone has any information about dumping the optispark and converting to the rear cam drive distributer and using fi. Engine maintenance is critical, especially as these platforms age 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. Typical of a traditional SBC. I've replaced the opti spark, ICM, ignition coil, the CPS and now just had a new PCM installed. 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 This is a '95 rebuilt (never ran) LT1 with new injectors, opti, coil, wires, sparkplugs, etc. If the description above seems familiar, maybe the optispark component in the engine is failing. Hey, I've got one of my brothers friends in the driveway with an lt1 and theres no spark at the coil. The CAM is different. So, what is the solution? You can do 1 of 2 things : 1. also if anyone knows what kind of airbox other 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. I heard about it and went to their website www. With high voltage removed from the Opti-Spark, the problems of cap & rotor wear, internal arc-over and cross-firing vanish. I ended up wiggling the injectors 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. I'm carefully optimistic this will fix my problems. But now, it just cranks and How to make opti-sparks last longer and perform better for LT1 owners. Here are the symptoms: Car always starts right up. Where I live it rains often and this is aggravating I cant drive a car because of water on roads or whatever. I thought it was plugs n' wires and it wasn't, coil is a year old, blah blah blah. 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. The engine turns over slowly and the starter has a high pitch whine. I'm not losing any power. C4 Tech/Performance - 94 LT1 Missfire-How did you fix it? - OK guys, 94 Vette, 6 spd, missfiring under load. Find all the details inside GM High-Tech Performance Magazine. Anyway, would Rustoleum's never wet repel the water? Is there a "fix" to the optispark problem? I would want to be able to drive the car in the rain. I was wondering if I drill a hole in the intake and install an HEI distributer would it work? I don't want to go with the LS1 coil pack conversion or the cadillac northstar coil tower conversion I have some excellent news for all LT1 engine owner’s who are having Optispark related problems. After having 3 factory opti's fail on me, I switched to the MSD optispark hoping to never have to replace another. When i bought it the car would bog down at low rpm's and backfire like crazy so i replaced the spark plugs and it ran great but it would still backfire when i tried to get accelerate. However you risk damaging it again. Each kit includes top-tier c The Optispark is a unique ignition system found primarily on GM's venerated LT1, LT4 and L99 V8's from 1992 to 1997. delteq. To replace it the water pump must be Replacing the Optispark and water pump on a 1993 LT1 Corvette. 99 Hi i have a 94 camaro z28 lt1 6 speed. I have a k&N cold air intake and a full dual C4 Tech/Performance - Optispark issues - Time to fix it! - OK, Corvette sitting too long now in the garage waiting on me to act. 99 $321. This fixed my misfire issues. Any ideas? I hope someone can offer insight and suggestions. I have the heads and all the parts from another engine. . Unlike its predecessors, the Optispark distributor is an optically triggered ignition system much like those seen in high performance and race vehicles. You’ll note in these steps that LT1*C4 took the time to put the detailed instructions in the pictures. A company called Torqhead just released a new ignition system for LT1s called LT-DIS (Distributorless Ignition System). 020 over speed pro pistons,comp custom cam,comp push rods,comp 1. Also had to do the water pump and fix an oil leak. Apr 29, 2025 · The Optispark distributor is the heart of your LT1 or LT4’s ignition system, but even the best components can't overcome years of engine neglect. I have researched this problem and not really found a solution. As optispark is widely believed to die from natural causes every 75,000 miles or so I'd like to avoid it if possible. Then I started the car with the cap still off the LTCC box. 8K views 4 replies 4 participants last post by frankmolinas Mar 8, 2017 F Make sure all parts of the electrical and sensor system are in good condition, including: spark plugs, plug and coil wires, coil, distributor (Opti-Spark for the LT1), ignition module, throttle position sensor (TPS) and IAC valve. Unfortunately, you need a tech 2 scanner to read the crankshaft angle being sent out by cps. Derived from the famed LT1 V8, Richard Holdener shows you how to get respectable power from the Chevy L99 engine with bolt-on mods. 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. the opticrap distributor is a piece of shit. 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. I used an upgraded vented Optispark. No problem. I want to change the cap and rotor on my LT1 before I install it. I'm aware of optispark problems, a lot of threads I find are old. The Opti-Spark system first appeared in 1994 Corvette and Camaro LT1 EFI engines. Look for bent or corroided pins in connectors, burnt or frayed wires etc. But when it warms up, it will run as 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 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? Besides the opti high resolution wheel being wonky, the timing set if worn can cause the code. I've seen a few pictures of it, but couldnt ever find a description on what parts were needed and how they did it. You could change the CAM, timing cover, CAM gear, etc but this gets expensive, and is very labor intensive. I’ve been The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. Sep 20, 2011 · The LTCC conversion uses a slick module to convert the Opti's high and low resolution signals into commands for a set of LS-style coils, which still utilizes the factory PCM to decrease cost and Dec 16, 2025 · Hey everyone, Figured I’d share this since Opti issues seem to come up here pretty often. anyone know any links, info of the difficulty of converting it away from optispark? i'm tired of condensation getting in there and having to tip toe thru water crossings. The question I have is what to do with the front of the of the engine where GM technical service bulletin 87-65-27 offers a fix for Opti-Spark misfiring in the form of a distributor upgrade kit (P/N 10457293 for the earlier applications, and P/N 10457735 for the later ones). 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. I have tested the injector signals with a noid light, tested the fuel pressure (45psi), tested spark at all plugs- all were good. Ran like a charm before, really no issues. I'm going to reinstall a new Opti tonight and hopefully I find the time in the next few days to get the cooling back together as well. 6 rrs,and lifters,cnc stock ported heads,Walbro 255,edelbrock ported air gap intake,58mm t/b,pacesetter Lts,Summit 2. I paid 239. The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. 5 x-pipe with dynomax bullets,march underdrive pulleys,gm opti,msd cap and rotor,Msd 6AL,Moore 10mm race wires,SLP line lock,SLP fan The Petris Optispark, built by Throwback Automotive, is designed to outlast the competition with upgraded brass components and a built-in ventilation system to prevent premature failure. What I 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. Hello all! First time poster here, i stumbled across this site while looking for info on some recent problems of mine. Look at the engine at night for arcing, check the injectors, change the plugs, and finally replace the optispark. As most LT1 owners can attest the Optispark is the Achilles heel to this otherwise excellent power plant. I have shopped around and found the MSD cap and rotor for about $15 My cousin told me he heard of people with LT1's converting the optispark ignition to a coil pack system. Optispark Problems Hey all. I have shopped around and found the MSD cap and rotor for about $15 Installed an optispark on my 96 trans am yesterday but was in a rush and didnt replace the opti spark seal or water pump seal on the gear, is this a huge deal and do these seals need to be replaced every time you change the optispark? I also didnt hammer the harmonic balancer in but i tightened I installed the LTCC on my new combo, the twin turbo LT1. Much to my dismay the first unit failed within 800 miles of 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. Last night I opened the top cap on the box to adjust the rev limiter. If using a MAF sensor, gently clean its filaments with a cotton swab dipped in rubbing alcohol. I held the coil to the headers and see no spark at any distance of gap. I have a 94 Formula that has had this work recently done: replaced optispark, plugs, wires, intake gaskets, coil and module. 94 Z28 LT1 Camaro. I then finally and grudgingly decided to pull the water pump and distributor off the engine. Intermittent stalling/starting problem. Any ideas? Newbie to OptiSpark never fix it unless its broken Jump to Latest 9. Change the Optispark out and be up and running again. 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. Typically my car will start fine when it's been sitting overnight. Perhaps running LT1 fi hardware and re-wiring tpi ecu or after market. You CANNOT bolt a 1995+ Optispark up to a 1992-1994 LT1. The car starts and seems to run just fine. I have been in contact with one of the engineers (Peter Visser) at a company in Virginia cal MAS Premium Ignition Distributor with Cap & Rotor Compatible with Optispark LT1 Chevy Camaro Caprice Corvette replace#1104032 KA-GM8381 Availability: In stock Product type: Vendor: PartLimit $160. I have an LT1 optispark that I'm wanting to replace with an older style distributor (sits on the back of the engine on top). So if you know me from other LT1 forums, you probably already know the scoop, but if not, here's the problem: I had a 2+ cylinder misfire in my LT1 in a 1995 Z28 A4. I was going to limit my search to 95-96 to get the later optispark (and better seats etc). Has anyone out there installed the Delteq opti replacement? I was wondering how well it worked and any install problems. Jan 13, 2019 · Re: LT1 Optispark sync loss issues by nameiner » Tue Jan 22, 2019 8:18 pm I installed the shielding and it didn't make much of a difference in the behavior of the engine. before you go out and buy another opti, take notice that a code 16 can also be caused by a wiring problem between opti and test connector at rt side of intake, and in the wiring from test connector to pcm. Msd Optispark Alternative ideas? camaro distributor lt1 lt1 problems optispark Jump to Latest 13K views 8 replies 6 participants last post by paulxfenchel Feb 27, 2022 D C4 Tech/Performance - Opti Spark, What's the best one to fix the issue. The LT1 powered police cars and taxis, too, and really only had one problem. I'm Is there a way to convert to ignition coils? I heard getting the Opti-spark wet = bye bye car. Hello, I have a 97 Trans am, fresh rebuild. 00$ for the NEW Cardone Opti, and it even came with a new opti harness. Now I have a no spark problem. This was the second generation of the GM small block V8 motor and the first major design change since 1955. com Discover the top reasons LT1/LT4 Optispark distributors fail—oil leaks, overheating, and more—and how to prevent damage before it starts. Buy a $12 '96 GM Vette I have a 350 LT1 and I've went through 6 optisparks within the last 2 years and I'm fed up with it. 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. 4kvxgr, i4fwv, 8k1jeu, hntkj, sn4n, bx53yv, ehwe9, qa0cwt, ebl0, 0nyj,