Have replaced 4 Opti sparks so far. First one was the original and it was a water issue. Would die whenever it hit even the smallest puddle. Replacement worked for a few days them would shut down on the freeway. All power would go out. Then wait 10 to 20 min and power comes back and drives normal. Third opti would run for exactly 12 minutes then shout off all power, ten to twenty minuets and would start again. The fourth one I used one of the new bodies i have and put the module out of the first Opti into it, (it was a GM module). This worked for the last two years. I also taped the breather ports on bottom and fitted brass fittings in them, two to the intake air and one to a vent. I also tapped the water pump relief hole and installed a fitting with a tube directing water off the Opti. This has worked well, no more problems till a week ago, but it's not the Opti.
I have a 94 Trans Am i bought new. It has 324.000 miles on it. Southern California car. Ive replaced the opti spark twice. The engine has never been touched, even the timing chain is original. It uses no oil, it has had lifelong 3000 mile oil changes, Castrol GTX 10 30. It still runs and sounds like new. Just had it smog tested 2 days ago, passed fine. Despite the miles, it still looks nearly new in and out. The original automatic transmission started slipping around 150.000 miles, I had a factory remanufactured unit installed, its still shifting perfectly. Everything else about the car has been great, one fuel pump replacement, 1 radiator replacement about 7 years ago. Biggest issue has been the power window motors, have them replaced 4 times! Computer, and all sensors are original, no problems with any of that. Ive had 3 new cars since i bought it, but I'll never let it go, i still enjoy driving it. Its the Dark green color, with charcoal leather interior. Good luck guys with your cars, and enjoy them.
Test drove a '94 Corvette yesterday. It has less than 50K on the odo, has been garaged all its life, and, honestly, everything on it looks practically brand new -- as nice a stock C4 as you could ever find. I was about ready to make an offer, then I drove it. It started up fine, sounded great, then ran like it was missing two cylinders and was nursing a bad hangover. It absolutely broke my heart. I'm hoping the owner can get this resolved because I'd still like to own the car, but damn ...
I'm almost certain I have a faulty optispark, but a local mechanic didn't diagnose anything wrong with my 96 Camaro when I took it in - twice! And that was supposed to be a 5-star shop. Your description of the problems was pretty much spot on.
I sincerely hope you changed the water pump at the same time. Water pump failure is the #1 reason for opti Failures since it can dump both coolant and oil on the unit.
12bigfatboy NO PROBS MAN,THAT WAS TEH GOAL TO SAVE PEOPLES TIME AND MONEY,EVERYBODY CHANGES PLUGS AND HT LEADS HOPING FOR BEST BUT ALMOST ALWAYS IT IS THE BLOODY OPTI. TAKE CARE
This sounds like everything I’m experiencing right now with my 94 z28 lt1.... Literally everything you’re saying, and it makes sense because I did the water pump a few months ago and even though I covered it with plastic some coolant still got on it I’m sure
I have a 96 roadmaster with the same symptoms. I figured it was the optispark. I am replacing it with an MSD opti., replacing the wobbly harmonic balancer, and a couple of belt pulleys. Thanks for the info.
93 driving down the interstate, got gas at the marathon because I was desperate, 3 miles later engine revs to 6-8k rpm while driving the interstate at 75, funky burnt undescribable smell, loss of horsepower, lights dimmed, engine loses power completely.. after stop, lights work, car kinda wants to start but just turns.. got it home w tow, used Heet water removal, tried starting fluid . Nothing but a cough of a misfire.. I hope this is it, also lt1
Lol that's LITERALLY all of the symptom's I've had on my car except the smell. It's crazy how I thought it was the fuel filter and ended up being my opti which is the shittiest thing GM could have ever created and I'm praying this replace my fixes my problem.
Right, update: Ordered TWO optisparks from china, yeh, yeh, I know, don't buy Chinese, but the expensive ones are sh*te .... Fitted one of them and keeping the other as a spare. . .Hey presto, my under load miss-fire is gone . Job done...... I opened up the dodgy opti and found that one of the screws holding the rotor arm in place had fallen out and was just rattling around inside. Why was that causing such a huge miss and total loss of power????? Weird.
If it's running hot and there's heating/cooling issues sounds like you have a bad water pump also,which is most likely what ruined the optispark. It sits right under the water pump. Yeah it sucks. I would replace both to save $,time and future aggravation.
I have a 94 Camaro, had it for 9 years and changed the Opti 4 times. That's the worst that has happened. It does get easier every time to change.I bought a 95 Impala SS and just did the Opti on that one. I have two LT1'S and drive the shit out of them, over all I'm happy 👍 Very Torqy motors 😉
these cars are for men that ain't scared of a little opti spark🙄🍺🍻Lt1s Lt4s still running hard 🙄👏🍺🍻👏👏👏😣👏🍻after 20 + years only if u got the BALLS to own it and work it😣🍻😎
make sure before you put Opti in the car, take the rotor out, and put some blue Loctite on the screws then put it back, main cause of lots of the failure in Optis
Check on all those symptoms. My Vette feels like it has the power of a Honda Civic. So much for my tax return, 1,200 big ones for a new Opti and install, fml.
I had a 94 Z28 and when the optispark started acting up like you describe it wasn't but a few weeks at the most before the engine would not start at all. I went and bought a new optispark, installed it myself, a pain because you have to remove radiator, and pull the harmonic balancer off just to get to the opti. But, I put a new one in, put it back together and she fired right up.
+24MartinONDS This was back in 2004. I did not even know MSD made an opti then or if they did then. After I posted I remembered that I had to just pull one or both fan shrouds and not the radiator.I can't remember if the fan shroud with the 2 fans was one unit or not but I had to get it out of the way. I had a long 3 leg grab puller that grabbed from the backside of the harmonic balancer and could not get a socket or wrench around it to pull off the harmonic balancer. So I had to make room. I lived out in the country so once I got started and realized that I needed a different puller in was too late so I just improvised. I sold that car in 2006. It was still running strong. I actually bought the opti from Oreilly auto parts, and bought the water pump from Advanced Auto. I went ahead and replaced it too. It was running just fine when I sold it. There was no youtube in 2004 so I used a Fbody web forum and someone had a Shoebox site that listed various repairs to Camaros. Do you know about this guy and his shoebox site? Then I permanently fixed the opti issue by buying a 2006 LS2 GTO, lol.
+8bert9 thanks for your answer. I just changed my whole ignition system on my 94 trans am. Video is in my channel. I just took out one fan. I do not know about this guy or his site. I own both original GM repair Manuals for 1994 Trans Am/ Camaro.
+24MartinONDS When you say that you changed your whole ignition system, did you stick with the optispark design or did you do an optispark delete. I have read a little about some people doing that. The whole reason I was looking at the opti issue lately is I wanted to refresh my memory on that issue, especially on the 94 LT1. I found a Black 94 Z28 6 speed 2 weeks ago. It was 1 owner, 80,000 miles and the owner bought it brand new in May 94. He was in his early 50's when he bought it and he took emaculant care of the car. It looks brand new. He got where he was having trouble getting in and out of it and he only used it in the summer anyway. I could not resist it and picked it up for $3000 dollars. It is a perfect example of the way a stock 94 Z28 was and the interior is perfect as well as everything else but I wanted to see what youtube had on the infamous opti, lol. I found the link to that guys site. It was called shoebox but now they changed it to shbox. Here is the link.....shbox.com/1/4th_gen_tech1.html
8bert9 Hello, No I did not delete the Opti. I Used a ignition system by MSD . The opti is made out of billet aluminum instead of plastic, and ist vented. (So were the oem Optis from 95 to 98.) The best thing would be a coil conversion, but I couldn't find the right parts here. You'll need a special module and the coils of an LS1 aswell. But the MSD opti runs great.
I’ve got the symptoms including the smell, but mine smells like straight up sulfur. All I’ve done so far is replace the fuel filter. I have a feeling it’s probably the opti though. Hopefully not
My 94 has been pretty cranky lately (limped it from Kingman to Tucson with my grandbaby in the car). Stalling out last year for no reason (new ICM, fuel pressure regualto and fuel pump). Ran great for a while (a little rough idle), then stalled with no restart while on a roadtrip. Troubleshooting found it to be a bad ignition key (security chip was worn). Again ran good for months. Now it stalls when it gets warm. Codes say Code 16. After watching this video, I think this may ony be part of the problem, since she is not showing all the symptoms, but some of them (lack of power at highway speed, odd smell, poor fuel consumption). I am hoping replacing the opti and ICM with MSD kit will fix the problem.
The Code16 means that the Optispark has already been changed with a non GM Optispark... Code for Optispark is H36 and C36.. H for Historical and C is for Current....
I replaced the opti. Runs fine till it warms up. Operating temp. Then all of the sudden it cuts off. Wait 10 mins and it fires up. Fuel pump has been replaced. Icm replaced as well.
I change the cap,rotor,wires,plugs and coil but not the optic now got to go back in and change it all over again ....everything works for the good now i know alittle bit more!!!
I might need a optispark for my 1992 corvette i don’t have a engine light on but the symptoms seems it is the optispark. What optispark do you recommend?
I actually have a 1995 Pontiac Trans Am, and lately I've been having startup issues. Sometimes it'll take up to three tries for the car to start up. After it warms up and I use it for a while. I'll come back to start the car again and the idle jumps really high or goes really low. but within a matter of seconds it evens out. So I'm not sure if that's because the ot spark or something else is the issue.
All lt1's optispark is junk! I've owned a 96 trans A.M. for 13 years! Finally someone told me about this.Said that MSD makes a replacement distributor for the optispark.The car runs like it did when I bought it! Just wished I knew about this 10 years ago
The msd opti costs 430$ but it is definitely worth it made out of billet aluminum. And to get the best percormance combine it with msd coil, msd wires and msd ignition module amd it will run smooth like never before.
To many people blaming everything on the opti here. You should also check and replace all the vacuum lines, they are old, brittle also. You're not going to buy, hop in and drive a 90's vehicle like it's a new car. Firing off the parts cannon not even fixing your problems in the end!
My 91 vette has a problem where on any given day i go to turn the key and nothing happens no sound at all, i can come back few hours later and try and it turns right on like nothing is wrong and I can’t figure out this problem it leaves me stranded places so often.
New fuel pump fuel filter I have changed oil and filter cleaned mass air flow sensor and the throttle body I have to hold gas pedal down for it to start as soon as released it dies
Huh didn't know LT1 was in something els besides a corvette. I just got a 92 and it had a bad opti spark mostly water in it. I love the car but it's starting problem is kinda annoying.
I’m having all these symptoms, but only after the car sits for a while. If I drive it everyday, it runs fine. If it sits for a week, all these symptoms start. Is that the same issue you had or was yours doing this constantly?
surprise, suprise - LT1 engine problem brought me here.... bought a 1994 Caprice STW .... engine shuts down in the middle of traffic, just great isn't it.
optispark is now changed and it helped. no more shutting down. but there probably still is something in the control module because the idle is little too fast. it's about 1,000 rpm as it should be around 700, says the mechanic at the garage where I took my car to change the Optispark.
In the UK clean and looked after LT1 Firebird starts from about 6.000 GBP. Pristine examples reach even 10.000 GBP. LS1 Transams start from 10.000GBP and sometimes go up to 20.000GBP if in showroom condition.
YOU HAVE A CLOGGED UP CATALYTIC CONVERTER MY FRIEND...? eliminate the OPTi spark did it 20 years ago coil on plug technology... I got a 20-year-old one with an LT 4 set up ... kicks ass.. Hughes transmission and converter makes all the difference and to many other mods, to list Here, got To love The F body be safe .. Take care all.. Your Fix IT
Sorry to hear this my friend:( If you live in US not a big deal cause you will get it fixed reasonably cheaply.I live in UK meaning it almost destroyed me financially :( F..kin LT1 ! But we love them anyway don't we:)
Have replaced 4 Opti sparks so far. First one was the original and it was a water issue. Would die whenever it hit even the smallest puddle. Replacement worked for a few days them would shut down on the freeway. All power would go out. Then wait 10 to 20 min and power comes back and drives normal. Third opti would run for exactly 12 minutes then shout off all power, ten to twenty minuets and would start again. The fourth one I used one of the new bodies i have and put the module out of the first Opti into it, (it was a GM module). This worked for the last two years. I also taped the breather ports on bottom and fitted brass fittings in them, two to the intake air and one to a vent. I also tapped the water pump relief hole and installed a fitting with a tube directing water off the Opti. This has worked well, no more problems till a week ago, but it's not the Opti.
Lynn S 😀what was it jackass? do tell do tell😀👏😀👏😀👏😀👏🍺
This is exactly what I'm experiencing in my 94 Firebird Formula. Thanks for the great video. 👍
I have a 94 Trans Am i bought new. It has 324.000 miles on it. Southern California car. Ive replaced the opti spark twice. The engine has never been touched, even the timing chain is original. It uses no oil, it has had lifelong 3000 mile oil changes, Castrol GTX 10 30. It still runs and sounds like new. Just had it smog tested 2 days ago, passed fine. Despite the miles, it still looks nearly new in and out. The original automatic transmission started slipping around 150.000 miles, I had a factory remanufactured unit installed, its still shifting perfectly. Everything else about the car has been great, one fuel pump replacement, 1 radiator replacement about 7 years ago. Biggest issue has been the power window motors, have them replaced 4 times! Computer, and all sensors are original, no problems with any of that. Ive had 3 new cars since i bought it, but I'll never let it go, i still enjoy driving it. Its the Dark green color, with charcoal leather interior. Good luck guys with your cars, and enjoy them.
Holy shit thats awesome
Hell yea dude
Sweet I like writing books too
Test drove a '94 Corvette yesterday. It has less than 50K on the odo, has been garaged all its life, and, honestly, everything on it looks practically brand new -- as nice a stock C4 as you could ever find. I was about ready to make an offer, then I drove it.
It started up fine, sounded great, then ran like it was missing two cylinders and was nursing a bad hangover. It absolutely broke my heart. I'm hoping the owner can get this resolved because I'd still like to own the car, but damn ...
I'm almost certain I have a faulty optispark, but a local mechanic didn't diagnose anything wrong with my 96 Camaro when I took it in - twice! And that was supposed to be a 5-star shop. Your description of the problems was pretty much spot on.
Thanks for watching and commenting
I sincerely hope you changed the water pump at the same time. Water pump failure is the #1 reason for opti Failures since it can dump both coolant and oil on the unit.
I changed my opti spark and water pump it wasnt to bad
hence the smell...
It's best to while you have it off it could be a pain in the ass to keep changing optis always spend too dollar on a Opti
I have a 1992 corvette you describe my problem right to the "T" thank you man!!!
12bigfatboy NO PROBS MAN,THAT WAS TEH GOAL TO SAVE PEOPLES TIME AND MONEY,EVERYBODY CHANGES PLUGS AND HT LEADS HOPING FOR BEST BUT ALMOST ALWAYS IT IS THE BLOODY OPTI.
TAKE CARE
Turns out had this issue but my problem I found after replacing everything. Was a fuel injector shorting out. Killing the engine.
This sounds like everything I’m experiencing right now with my 94 z28 lt1.... Literally everything you’re saying, and it makes sense because I did the water pump a few months ago and even though I covered it with plastic some coolant still got on it I’m sure
I bought mine ab 4 days ago what ended up happening and have any tips
I have a 96 roadmaster with the same symptoms. I figured it was the optispark.
I am replacing it with an MSD opti., replacing the wobbly harmonic balancer, and a couple of belt pulleys.
Thanks for the info.
no probs,happy i could help
I love the end; no sense in spending unnecessary money just change the opti💪🏾👍🏾👌🏾☝🏾🤘🏾🤜🏾
Not very popular to be honest but i love them! I love american muscle cars beyond any other cars
93 driving down the interstate, got gas at the marathon because I was desperate, 3 miles later engine revs to 6-8k rpm while driving the interstate at 75, funky burnt undescribable smell, loss of horsepower, lights dimmed, engine loses power completely.. after stop, lights work, car kinda wants to start but just turns.. got it home w tow, used Heet water removal, tried starting fluid . Nothing but a cough of a misfire.. I hope this is it, also lt1
Thank you for making this. You saved me hours of screwing around!!
Lol that's LITERALLY all of the symptom's I've had on my car except the smell. It's crazy how I thought it was the fuel filter and ended up being my opti which is the shittiest thing GM could have ever created and I'm praying this replace my fixes my problem.
LT1 opti is a bitch!
I'm on my 4th in three years!!!! Even had a really expensive MSD one go tits up. . .None of them threw any codes either.
Right, update: Ordered TWO optisparks from china, yeh, yeh, I know, don't buy Chinese, but the expensive ones are sh*te .... Fitted one of them and keeping the other as a spare. . .Hey presto, my under load miss-fire is gone . Job done...... I opened up the dodgy opti and found that one of the screws holding the rotor arm in place had fallen out and was just rattling around inside. Why was that causing such a huge miss and total loss of power????? Weird.
Mine would just stall .I changed out control module coil and opti .and of course water pump no prob so far
Orpheuss Hey i pray for you too
Bro each time you said another symptom It was like someone slappin me 💀 I guess it’s time to replace…
If it's running hot and there's heating/cooling issues sounds like you have a bad water pump also,which is most likely what ruined the optispark. It sits right under the water pump. Yeah it sucks. I would replace both to save $,time and future aggravation.
I have a 94 Camaro, had it for 9 years and changed the Opti 4 times. That's the worst that has happened. It does get easier every time to change.I bought a 95 Impala SS and just did the Opti on that one. I have two LT1'S and drive the shit out of them, over all I'm happy 👍 Very Torqy motors 😉
indeed mate Opti Spark is a twat
Most people think it is the opti spark when it is the control module .If it is the opti it will run like shit misfire .
these cars are for men that ain't scared of a little opti spark🙄🍺🍻Lt1s Lt4s still running hard 🙄👏🍺🍻👏👏👏😣👏🍻after 20 + years only if u got the BALLS to own it and work it😣🍻😎
Been looking at a 95 to purchase, what should I look out for?
make sure before you put Opti in the car, take the rotor out, and put some blue Loctite on the screws then put it back, main cause of lots of the failure in Optis
Man you've saved my life and my car!! I was going crazy changing plugs wires everything!
Thank you!!
yes,optispark is a bitch :)
+Tyler Mcgee no probs,glad i could help
in my case when the engine get hot, bad ticking, seems as though it running out of gas. engine light comes on and goes off. yes it did help. thanks
stompjumper2007 same issue did you fix this?
Check on all those symptoms. My Vette feels like it has the power of a Honda Civic. So much for my tax return, 1,200 big ones for a new Opti and install, fml.
You must live in Hollywood to had to pay that much.
If you replace opti spark replace water pump as well
I had a 94 Z28 and when the optispark started acting up like you describe it wasn't but a few weeks at the most before the engine would not start at all. I went and bought a new optispark, installed it myself, a pain because you have to remove radiator, and pull the harmonic balancer off just to get to the opti. But, I put a new one in, put it back together and she fired right up.
+8bert9 Why would you take out the radiator? It's actually not that bad to change. I hope you used an MSD opti...
+24MartinONDS This was back in 2004. I did not even know MSD made an opti then or if they did then. After I posted I remembered that I had to just pull one or both fan shrouds and not the radiator.I can't remember if the fan shroud with the 2 fans was one unit or not but I had to get it out of the way. I had a long 3 leg grab puller that grabbed from the backside of the harmonic balancer and could not get a socket or wrench around it to pull off the harmonic balancer. So I had to make room.
I lived out in the country so once I got started and realized that I needed a different puller in was too late so I just improvised. I sold that car in 2006. It was still running strong. I actually bought the opti from Oreilly auto parts, and bought the water pump from Advanced Auto. I went ahead and replaced it too. It was running just fine when I sold it.
There was no youtube in 2004 so I used a Fbody web forum and someone had a Shoebox site that listed various repairs to Camaros. Do you know about this guy and his shoebox site? Then I permanently fixed the opti issue by buying a 2006 LS2 GTO, lol.
+8bert9 thanks for your answer. I just changed my whole ignition system on my 94 trans am. Video is in my channel.
I just took out one fan.
I do not know about this guy or his site. I own both original GM repair Manuals for 1994 Trans Am/ Camaro.
+24MartinONDS When you say that you changed your whole ignition system, did you stick with the optispark design or did you do an optispark delete. I have read a little about some people doing that. The whole reason I was looking at the opti issue lately is I wanted to refresh my memory on that issue, especially on the 94 LT1. I found a Black 94 Z28 6 speed 2 weeks ago. It was 1 owner, 80,000 miles and the owner bought it brand new in May 94. He was in his early 50's when he bought it and he took emaculant care of the car. It looks brand new. He got where he was having trouble getting in and out of it and he only used it in the summer anyway. I could not resist it and picked it up for $3000 dollars. It is a perfect example of the way a stock 94 Z28 was and the interior is perfect as well as everything else but I wanted to see what youtube had on the infamous opti, lol. I found the link to that guys site. It was called shoebox but now they changed it to shbox. Here is the link.....shbox.com/1/4th_gen_tech1.html
8bert9 Hello, No I did not delete the Opti. I Used a ignition system by MSD . The opti is made out of billet aluminum instead of plastic, and ist vented. (So were the oem Optis from 95 to 98.)
The best thing would be a coil conversion, but I couldn't find the right parts here. You'll need a special module and the coils of an LS1 aswell.
But the MSD opti runs great.
Mine would just suck voltage when i hit the accelerator. Going to do the LTCC conversion and be done with it
I’m experiencing powers loss it feels like I have 80hp and a misfire I’m going to replace my optispark
I’ve got the symptoms including the smell, but mine smells like straight up sulfur. All I’ve done so far is replace the fuel filter. I have a feeling it’s probably the opti though. Hopefully not
With a sulfur smell it sounds like it's a clogged cat bud
@@joshuastaton6501 I was thinking the same thing but it ended up being a multitude of vacuum leaks
My 94 has been pretty cranky lately (limped it from Kingman to Tucson with my grandbaby in the car).
Stalling out last year for no reason (new ICM, fuel pressure regualto and fuel pump). Ran great for a while (a little rough idle), then stalled with no restart while on a roadtrip. Troubleshooting found it to be a bad ignition key (security chip was worn). Again ran good for months. Now it stalls when it gets warm. Codes say Code 16. After watching this video, I think this may ony be part of the problem, since she is not showing all the symptoms, but some of them (lack of power at highway speed, odd smell, poor fuel consumption).
I am hoping replacing the opti and ICM with MSD kit will fix the problem.
control module
The Code16 means that the Optispark has already been changed with a non GM Optispark... Code for Optispark is H36 and C36.. H for Historical and C is for Current....
I have a red 95 Trans Am it stopped whilst driving , changed Opti , new battery, new plugs, New ICM new coil and still will mot start and from UK
I replaced the opti. Runs fine till it warms up. Operating temp. Then all of the sudden it cuts off. Wait 10 mins and it fires up. Fuel pump has been replaced. Icm replaced as well.
Malcolm Moore im sure you bought a cheap opti....
I change the cap,rotor,wires,plugs and coil but not the optic now got to go back in and change it all over again ....everything works for the good now i know alittle bit more!!!
Thanks man, good info.
this is wht my 96 caprice 5.7 lt1 is doing right now
I might need a optispark for my 1992 corvette i don’t have a engine light on but the symptoms seems it is the optispark. What optispark do you recommend?
I have a 93 z28 and just replaced the fuel pump.
ran good for 4 days. now it won't start. just turns the engine over.
Any ideas on what to check next
Did you change your fuel filter?
I actually have a 1995 Pontiac Trans Am, and lately I've been having startup issues. Sometimes it'll take up to three tries for the car to start up. After it warms up and I use it for a while. I'll come back to start the car again and the idle jumps really high or goes really low. but within a matter of seconds it evens out. So I'm not sure if that's because the ot spark or something else is the issue.
check intake manifold gasket
All lt1's optispark is junk! I've owned a 96 trans A.M. for 13 years! Finally someone told me about this.Said that MSD makes a replacement distributor for the optispark.The car runs like it did when I bought it! Just wished I knew about this 10 years ago
The msd opti costs 430$ but it is definitely worth it made out of billet aluminum. And to get the best percormance combine it with msd coil, msd wires and msd ignition module amd it will run smooth like never before.
What about a 4.3 v8 motor ? Could it be opti or coil packs or just coil packs ?
Does the misfires make the car run super hot I had misfires and got up to 220 in the driveway
To many people blaming everything on the opti here. You should also check and replace all the vacuum lines, they are old, brittle also. You're not going to buy, hop in and drive a 90's vehicle like it's a new car. Firing off the parts cannon not even fixing your problems in the end!
my Buick roadmaster starts but when I apply the slightest pressure or putting my foot down the car shuts off
My 91 vette has a problem where on any given day i go to turn the key and nothing happens no sound at all, i can come back few hours later and try and it turns right on like nothing is wrong and I can’t figure out this problem it leaves me stranded places so often.
Bad connection on the starter solenoid
Would thie cause it to blow the ignition fuse?
New fuel pump fuel filter I have changed oil and filter cleaned mass air flow sensor and the throttle body I have to hold gas pedal down for it to start as soon as released it dies
Huh didn't know LT1 was in something els besides a corvette. I just got a 92 and it had a bad opti spark mostly water in it. I love the car but it's starting problem is kinda annoying.
There is even an LT1 in a Cadillac.
I’m having all these symptoms, but only after the car sits for a while. If I drive it everyday, it runs fine. If it sits for a week, all these symptoms start. Is that the same issue you had or was yours doing this constantly?
Opti spark controls all of it
surprise, suprise - LT1 engine problem brought me here.... bought a 1994 Caprice STW .... engine shuts down in the middle of traffic, just great isn't it.
If it just stalls it is prob control module not opti spark
optispark is now changed and it helped. no more shutting down. but there probably still is something in the control module because the idle is little too fast. it's about 1,000 rpm as it should be around 700, says the mechanic at the garage where I took my car to change the Optispark.
If it idles fast throttle control module could be your prob
How much are these worth outside of us?
In the UK clean and looked after LT1 Firebird starts from about 6.000 GBP. Pristine examples reach even 10.000 GBP. LS1 Transams start from 10.000GBP and sometimes go up to 20.000GBP if in showroom condition.
@@Adikxx okay so just a little more then over here not too crazy I have a z28 rlly want a trans am soon as well
YOU HAVE A CLOGGED UP CATALYTIC CONVERTER MY FRIEND...? eliminate the OPTi spark did it 20 years ago coil on plug technology... I got a 20-year-old one with an LT 4 set up ... kicks ass.. Hughes transmission and converter makes all the difference and to many other mods, to list Here, got To love The F body be safe .. Take care all.. Your Fix IT
that's my trans,am problem
😓
Just Don't buy a Opti from Amazon spend the money for one Thank me Later
mine is now shutting down at operating temp no codes or lights
but not running hot
My camaro lt1 has these symptoms :(
Sorry to hear this my friend:( If you live in US not a big deal cause you will get it fixed reasonably cheaply.I live in UK meaning it almost destroyed me financially :( F..kin LT1 ! But we love them anyway don't we:)