Warm start lt1 issues
Thread Starter
Teching In
Joined: Jun 2008
Posts: 6
Likes: 0
Warm start lt1 issues After days of searching on here it's time
ask you guys for help. I have a 96 Z28
with about 60,000 miles and no mods.
Lately my problem has been that I can
start the car when its cold and drive it
without any issues but as soon as its warmed up and I shut it off and try to
restart it, it will start, run for a couple
seconds and then die. Then, if i try to
start it after that, it will crank and not
start unless I wait 5 minutes or so and itll
start just fine. I just replaced the ICM thinking it was getting headsoaked and
did the fuel filter as well but neither have
helped. Also, its not throwing any codes
so im not sure where to go from here.
Thanks in advance for the help.
ask you guys for help. I have a 96 Z28
with about 60,000 miles and no mods.
Lately my problem has been that I can
start the car when its cold and drive it
without any issues but as soon as its warmed up and I shut it off and try to
restart it, it will start, run for a couple
seconds and then die. Then, if i try to
start it after that, it will crank and not
start unless I wait 5 minutes or so and itll
start just fine. I just replaced the ICM thinking it was getting headsoaked and
did the fuel filter as well but neither have
helped. Also, its not throwing any codes
so im not sure where to go from here.
Thanks in advance for the help.
Thread Starter
Teching In
Joined: Jun 2008
Posts: 6
Likes: 0
I put the tester on it again today while it was hot and was reading around 30psi while running. I then turned it off and put to key to the "run" position to prime the pump but was only getting maybe 1 to 2 psi max. After it cooled down some I tried to prime it again and it was around normal. Definitely an issue there. I then took the vaccum line off and it read a maximum of 40 psi while running, with the hose off. Has anyone heard of a fuel pump acting this way once the car has been warmed up? Could it be a relay or something or is my pump just shot?
Trending Topics
On The Tree
Joined: Mar 2010
Posts: 153
Likes: 0
From: BAY AREA
i believe is the fuel pump.
i had similiar problems with my fuel pump.
mine will work like a champ first time i started the car.
after driving a few min or stop driving it for a few hrs the fuel pump will come to play and it will stop working car will crack but wouldnt start.
i replaced it with a use one and had no problem for being cheap now the used one i had put on went out and same thing started happening.
im 75% sure its your fuel pump.
i had similiar problems with my fuel pump.
mine will work like a champ first time i started the car.
after driving a few min or stop driving it for a few hrs the fuel pump will come to play and it will stop working car will crack but wouldnt start.
i replaced it with a use one and had no problem for being cheap now the used one i had put on went out and same thing started happening.
im 75% sure its your fuel pump.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I have almost the identical symptoms on my 97' Cranks and starts fine, last week after about a 30 minute drive, got home, parked in driveway and shut it off. Took my kids out of the car etc and went to put it back into the garage, cranks, no fire, lots of stumbling, smell fuel. 2 hours later started up and I pulled it into the garage.
