LT1 stalls and dies sometimes
Thread Starter
Teching In
Joined: Dec 2011
Posts: 49
Likes: 0
From: Orlando, FL
LT1 stalls and dies sometimes My LT1 Engine stalls and shuts off soemtimes..
I installed a new fuelpump..
Fuelpressure okay, no codes
i made a bypass with the fuelpump running when i want.
car dies, connect fuelpump with power from bypass car is running fine.
ICM ignition control module?? Oilpressure sensor? (still shows in dash)
what else could it be??
seems heat related. everytime when car is cold it starts fine..
when engine hot it starts sometimes too, but there are days with stalling and shutting off
thanks
Greg
I installed a new fuelpump..
Fuelpressure okay, no codes
i made a bypass with the fuelpump running when i want.
car dies, connect fuelpump with power from bypass car is running fine.
ICM ignition control module?? Oilpressure sensor? (still shows in dash)
what else could it be??
seems heat related. everytime when car is cold it starts fine..
when engine hot it starts sometimes too, but there are days with stalling and shutting off
thanks
Greg
Teching In
Joined: Oct 2012
Posts: 2
Likes: 0
No definitive answer. I see lots of posts about "my LT1 just stops; after a while it starts again" but no definitive answers.
Lots of try this and try that but no one seems to write back what actually fixes the problem.
For me, the engine goes off like it was switched off. The tach falls right to zero even though the engine may still be turning. No check engine light. No idiot lights. Engine will turn but not fire. After waiting 3+ mins she will fire right up and often will run all day.
Has anyone who had a similar problem fixed it?
Lots of try this and try that but no one seems to write back what actually fixes the problem.
For me, the engine goes off like it was switched off. The tach falls right to zero even though the engine may still be turning. No check engine light. No idiot lights. Engine will turn but not fire. After waiting 3+ mins she will fire right up and often will run all day.
Has anyone who had a similar problem fixed it?
Teching In
Joined: Oct 2012
Posts: 2
Likes: 0
I decided to start with the cheap and easy first and keep going through all the possibilities.
I had a fuel filter for a few years so I put that in. No help.
I used some spray to "clean" the ignition switch. No help.
I found one of the vacuum lines was cracked. Fixed the leak but that was not the main problem.
The next cheapest/easiest was the coil. I got a Duralast for $26 at Autozone. BINGO! The car runs fine. Better then it did in a while right up to redline.
I had a fuel filter for a few years so I put that in. No help.
I used some spray to "clean" the ignition switch. No help.
I found one of the vacuum lines was cracked. Fixed the leak but that was not the main problem.
The next cheapest/easiest was the coil. I got a Duralast for $26 at Autozone. BINGO! The car runs fine. Better then it did in a while right up to redline.
