93z28ltfun

Hey guys my 93 lt1 doesnt like to start very easy when its hot and after it sits for a hour or longer. it cranks for a few seconds then tries then it starts and is fine after it starts. it cold starts fine. any common problems with this or ideas? thanks

food nd cars

my friends C4 L98 likes to do the same thing.. sometimes won't even turn over. Sits it in the shade for awhile and once it cools off it starts back up again. Never figured out what it was tho.

93z28ltfun

well it cranks fine. my old 88 ta would kinda do what his is. it would get hot then not crank. turns out it was the starter. swapped it and was good to go.

ebeard

I've had the same problem with the starter. I would leave my car running sometimes when i had to run into some place real quick ha.

Edit: People have also had the same symptoms when the ICM gets hot

Gojira94

iTrader: (4)

A summer bummer: interior-located electronics that get up to 140* and stop working until they cool off... worth testing.

http://shbox.com/1/fuel_pump_relay.jpg

the_merv

iTrader: (88)

Starter or ICM..I'm leaning toward the Starter..the ICM ***** up in the highend rpm's when it gets hot.

Kitt_Down_Under

I know I'm a little late to the party, but for anyone else who (like me) couldn't figure this out for ages, it was my coolant temperature sensor in the front of the water pump.

When it breaks or stops sending signals, the PCM defaults to -40° meaning it starts really well when cold and runs ridiculously rich and won't start when hot.

I replaced the coolant temp sensor in the water pump with a new acdelco one from Amazon and it instantly solved this problem! Starts like a dream now!

Alejandro Guerrero

My 94 Corvette did the same thing after putting long tube headers in. The problem was the exhaust was heating up the starter too much that it couldn't function properly. Put some heat shielding around the starter and the problem went away.

phantoms

iTrader: (1)

Had a similar issue when I had a leaky injector.

It would restart immediately after turning off but if it sat for around 30 minutes to a few hours it would be hard to start. Sitting overnight it would start fine.

LilJayV10

iTrader: (39)

If it's cranking slow the starter is problem getting heat soaked or one of the battery cables is bad. As temp goes up, so does resistance.