1997 Pontiac Grand Prix Logo
Posted on Sep 24, 2009
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My car starts but after a while dies waht can be

My car starts but after a while dies waht can be the problem its a 97 pontiac grand prix gtp

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Shannon L Washam

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  • Posted on Sep 25, 2009
Shannon L Washam
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Hello! You're symptoms sound very much like a common problem associated with the fuel pump resistor. The GTP engine has a two speed fuel pump. There are two relays that control the fuel pump via the PCM module. The fuel pump relay and fuel pump hi-speed relay. Tied into the hi-speed relay is a fuel pump resistor that may go bad.

Symptoms vary but primarily the engine will start but die in a matter of seconds due to insufficient fuel pressure.

Here is a picture of the relay - which is located in the fuse box in the engine compartment:

my car starts but after a while  dies waht can be - e3ccead.jpg
What you can do to both diagnose this and either narrow it down to this or disqualify it as the culprit is remove relay #15, and bend out the tab labeled "85", and then reinstall the relay. If this does solve your problem, then you need to replace the Fuel Pump Resistor. Doing this will bypass the resistor, and place the fuel pump in "high" speed mode at all times. Once you have replaced the resistor, you need to bend the tab back to its normal position and replace the relay.
NOTE: while this may be a helpful diagnosis tool, and provide a temporary fix - doing this procedure for a prolonged period of time can lead to fuel pump failure. Use this at your own risk.


Hope this helps and good luck!

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  • Posted on Sep 24, 2009
Anonymous
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Its probley not getting gas if your good with cars change the fuel filter

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