1995 corvette motor
Le Mans Master
Joined: Aug 2005
Posts: 5,002
Likes: 5
From: No Opti Here Tn
St. Jude Donor '06
It could be so many things
You need a service manual to trouble shoot this
Does the fuel pressure hold steady after it shuts down?
The fuel pump comes on to start the car then if it doesnt see oil pressure it shuts it down
Still could be the problem
Can you pull codes?
You need a service manual to trouble shoot this
Does the fuel pressure hold steady after it shuts down?
The fuel pump comes on to start the car then if it doesnt see oil pressure it shuts it down
Still could be the problem
Can you pull codes?
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Air, Fuel, spark and compression, all at the right time and all in the proper amount. What's missing?
With all stock wiring, that is NOT true.
RACE ON!!!
Originally Posted by 7thvet
Oil pressure switch?
It has to have oil pressure or it'll shut off.
Just a guess.
It has to have oil pressure or it'll shut off.
Just a guess.
RACE ON!!!
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
I had the same problem with a different car, check the fuel pump. Mine would come on when the key was turned on for 2 secs and then would cutoff till the key was turned off then on, also check the fuel pump relay and wiring.
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Time to hook up the fuel pressure guage.But there are other things that could cause it...and like CFI-EFI said, with stock wiring the oil pressure switch will not shut it down. It's only a backup for the fuel pump if the FP relay fails.You should be able to check for constant spark even without the engine running. Those are the 2 areas I'd check first.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Randy93
I had the same problem with a different car, check the fuel pump. Mine would come on when the key was turned on for 2 secs and then would cutoff till the key was turned off then on, also check the fuel pump relay and wiring.
RACE ON!!!
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Pro
Joined: Aug 2004
Posts: 623
Likes: 1
Originally Posted by CFI-EFI
Air, Fuel, spark and compression, all at the right time and all in the proper amount. What's missing?
With all stock wiring, that is NOT true.
RACE ON!!!
With all stock wiring, that is NOT true.
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by lefoy84
CFI-EFI is right! When the key is turned on, the fuel pump is turned on briefly. If the car is not started right away, it shuts down. The oil pressure switch is a backup to the fuel pump relay.
RACE ON!!!
Melting Slicks
Joined: Apr 2003
Posts: 2,150
Likes: 6
From: NS
Originally Posted by hezi
I have put a 1995 corvette lt1 motor in my 1939 Ford.
Problem is it will not run for more than 5 secs.
Anyone have an idea what`s wrong??
Problem is it will not run for more than 5 secs.
Anyone have an idea what`s wrong??
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Well, it could be your muffler bearings.
We need a LOT more info that 'It Runs For 5 Seconds and Shuts Down'.
What have you got?
What's your 'TIQ' (Troubleshooting IQ)?
Did you wire it up?
Stock wiring harness?
Stock ECM?
Reprogrammed ECM?
What fuel pump?
What have you checked?
What's been proven already to be good?
Whe it runs for 5 seconds is it running ok?
There's really not enough data to do anything other than guess by gosh.
We need a LOT more info that 'It Runs For 5 Seconds and Shuts Down'.
What have you got?
What's your 'TIQ' (Troubleshooting IQ)?
Did you wire it up?
Stock wiring harness?
Stock ECM?
Reprogrammed ECM?
What fuel pump?
What have you checked?
What's been proven already to be good?
Whe it runs for 5 seconds is it running ok?
There's really not enough data to do anything other than guess by gosh.