Help! problems starting

[ElderJedi]

ok so i go out in the moring and she fires right up, runs awsome where ever i go , but lets say after 20-30 min of driving . i turn my vette of and if it sits over 5 min it wont start back up , cranks sounds like its going start and keep running, but will run about ten secounds then dies, now after it sits for lets say over an hour it will fire right back up like nothong is wrong, 1991 vette 5.7 coupe , anyone else have this problem or know what it might be?

 

[gmjunkie]

ok so i go out in the moring and she fires right up, runs awsome where ever i go , but lets say after 20-30 min of driving . i turn my vette of and if it sits over 5 min it wont start back up , cranks sounds like its going start and keep running, but will run about ten secounds then dies, now after it sits for lets say over an hour it will fire right back up like nothong is wrong, 1991 vette 5.7 coupe , anyone else have this problem or know what it might be?

Sounds like you may have some Fuel Injectors that are leaking down,But could be some other things,Weak Coil,Weak Fuel pump,Ignition Module,Catalytic Converters going south!! You need a service manual and do some trouble shooting,without one your just piss'n in the wind!!

 

[ElderJedi]

got one and its worthless, new fuel filter , pulgs, wires, coil, modules, fuel relay, had a presure test done 44 psi,
runs like new when i first start it or let it sit for an hour, but after driving and letting sit for about 10-15 minutes starts runs about ten seconds and then dies:confused;help

 

[G Winter]

Check for gas in the vacuum line from the fuel pressure regulator. Might have a diaphram leaking.

Glenn

 

[ElderJedi]

Check for gas in the vacuum line from the fuel pressure regulator. Might have a diaphram leaking.

Glenn

damm , lol thats alot of crap i have to take of to get to it, but ok . ill do that next, after all this she better run like new , allways has but grrr, 10 dollar part hope is all it is, hell replaced everything else . why not the rest lol, thanks man. and thanks for the input guys

 

[gmjunkie]

damm , lol thats alot of crap i have to take of to get to it, but ok . ill do that next, after all this she better run like new , allways has but grrr, 10 dollar part hope is all it is, hell replaced everything else . why not the rest lol, thanks man. and thanks for the input guys

I'd also put it on a Real Time Scanner and check the temp sending unit under the throttle body,they will sometimes get out of range and make them hard to start warm and not necessarily trip a code!!