starts but doesn't stay running

2000 CHEVROLET IMPALA

129,000 MILES • 6 CYL • FWD • AUTOMATIC

20IMPALA00

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Thank you for the previous advise but, problem persist. I have replaced all three ignition coils, spark plugs, and plug wires. I will change the fuel filter and pcv valve next. Any advice on why car won't stay on for more than five minutes before shuts off.

Nov 4, 2008 at 6:43 PM

KASEKENNY

CERTIFIED EXPERT
18,907 POSTS

This is almost surely a fuel related issue. So if it were me, I would start with checking the fuel pressure to find out where that stands.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If the fuel pressure is low then we need to suspect the pump is the issue but if you have not changed the filter in a while, that is easier and cheaper so I would do that and recheck the pressure.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

If the filter does not solve it then the pump needs to be replaced.

Below you will find the process from the manual on the filter and the pump.

Please let us know what you find on this and we can go from there.

Thanks

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Aug 10, 2021 at 8:21 PM