C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

car stalls

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Old 03-12-2018, 09:00 PM
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Tripower delight
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Default car stalls

Got a problem with my 95 supercharged LT1. the car starts up fine, I put a few miles on it to fully warm up and out of nowhere the car just stalls out. I try to start it,it cranks but wont start. wait about a hour and it will start but Ill go a mile or two and it stall out again. The first tow truck driver said it sounds like a fuel pump problem, so I replaced the fuel pump,same thing happened so its not the pump what else could it be. Anybody else have this happen
Old 03-12-2018, 09:32 PM
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billschroeder5842
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O P T I S P A R K
Always a guess but the way to bet is on your optispark. Sorry.
Old 03-13-2018, 09:09 AM
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Tripower delight
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Default car stalls

Originally Posted by don hall
Also, symptoms of a failed/failing ignition control module.
When the unit gets hot, the engine will shut down, and not
restart until it cools

Easy fix. Read through the threads and determine if that is the problem:

https://www.google.com/search?client...UTF-8&oe=UTF-8

If changing the module, ensure you apply the grease that comes with the part.....important!
Thanks man I though it has something to do with heat. That's why it starts after a hour or so, Ill look into it thanks again brother.
Old 03-13-2018, 10:35 AM
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Tripower delight
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Default car stalls

Originally Posted by billschroeder5842
O P T I S P A R K
Always a guess but the way to bet is on your optispark. Sorry.
optispark I hear there a bitch to replace I think that why you said sorry. Ill check it out thanks brother.
Old 05-05-2018, 09:45 PM
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Tripower delight
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Originally Posted by Tripower delight
optispark I hear there a bitch to replace I think that why you said sorry. Ill check it out thanks brother.
Ok so I changed the fuel pump, ignition module, and coil, no good, car still stalls. So now Im going to change the optispark and the crank trigger module. I seen a video on it and its a nightmare to change. I thought the crank trigger was in the same area but there was no mention of it when the guy was taking every think apart. Anybody know where the crank trigger is located
Old 05-05-2018, 10:28 PM
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Mr. Peabody
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Due to the $$ and the hassle involved, the opti-spark is something that you want to diagnose as being the problem before you go throwing one at the car to see if "that part" was the problem.

Are you able to pull any codes?

I know you changed out the fuel pump. Did you replace the two relays?
Any way to rig a fuel pressure gauge so that you can see the fuel pressure when it stalls?

Did you put the supercharger system in or was it there when you bought the car?
Old 05-05-2018, 10:29 PM
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Kevova
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GM didn't use crank sensor on LT1 until 96.
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Old 05-05-2018, 11:35 PM
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Tripower delight
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Originally Posted by Mr. Peabody
Due to the $$ and the hassle involved, the opti-spark is something that you want to diagnose as being the problem before you go throwing one at the car to see if "that part" was the problem.

Are you able to pull any codes?

I know you changed out the fuel pump. Did you replace the two relays?
Any way to rig a fuel pressure gauge so that you can see the fuel pressure when it stalls?

Did you put the supercharger system in or was it there when you bought the car?
Thanks for helping out, No I didn't replace any relays on the pump. I have a fuel pressure gauge in the car but I never think to look at it when it stalls cause I looking out where to pull over. After it stalled today I called a friend of mine he came down with a spark plug tester and it had spark but it is weird because in the past the car wont start again until it cooled off for a hour or two. But today he pulled the #4 cylinder boot off and when he put it back on it started. So Im confused as what can be causeing this. And when I brought it it was surpercharged. Thanks again for helping out today

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