Question about 1996 Pontiac Grand Am
Posted by Anonymous on
Check the fuel pressure regulator. You didn't say what engine you have. If you have the V-6 it is located on the front of the engine on the drivers side near where the throttle cable hooks up to the throttle body. It will have a rubber vacuum hose coming out of the top of it. pull of the hose. start the car. if you see fuel coming out than the regulator is bad.
The other possibility is the fuel pump check valve is bad and fuel pressure is dropping off and the fuel is boiling in the fuel rail. It will take longer to start because it needs to push the vapor out of the rail. Once it cools down the vapor condenses back to fuel and it starts right up.
Two things to try
1. when it doesn't start cylce the key four or five times. Which means turn the key to the on position (do not start the vehicle) wait 3-5 seconds and then turn the key off and repeat. The final time go ahead and start the vehicle. You should hear the fuel pump run every time you turn the key on. If the vehicle starts right up you definitely have a fuel issue.
2. When it doesn't start hold the gas pedal to the floor. Then start the vehicle being ready to let off the gas pedal if it starts. If it starts up and then runs a little rough and then clears up it is likely a fuel pressure regulator leaking.
Posted on Dec 28, 2010
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Posted on Jan 02, 2017
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