1994 Chevy Beretta car wont start

BLUE95DAK

MEMBER
1994 CHEVROLET BERETTA
6 CYL
FWD
AUTOMATIC
175,000 MILES

After I replaced the intake manifold gaskets the car has been having problems with staying running. It will just randomly shut off. I replaced the fuel pump and filter as well as the tps. If I let it sit for a day or so it restarts again like nothing is wrong. It usually only quits after it has warmed up. Im thinking its a combination of the fuel pressure regulator or fuel pump relay. Any help would be greatly appreciated

Thursday, September 17th, 2009 AT 9:42 PM

1 Reply

JDL

MECHANIC
16,098 POSTS

Welcome to the forum. I need more info. When the problem occurs, if the vehicle cranks good but won't start, use a noid lite on the injector plug, have a helper crank it, see if the lite pulses. That's one way of knowing if the computer sees a rpm signal.

Also, there shows to be an oil pressure switch in the fuel pump circuit, parallel to the relay circuit, Once you crank it enough to bring up oil pressure, the switch closes and the pump will run, regardless of the relay. The switch has to be functional and needs voltage.

Use a gage and check fuel pressure.

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Friday, September 18th, 2009 AT 11:00 AM