High idle, running rich and the fuel pump is whining

1992 CHEVROLET LUMINA
167,000 MILES • 3.1L • V6 • 2WD • AUTOMATIC
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JESSICA LAUBY
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Use to stall during low rpm's then one day wouldn't start. Changed TPS, MAP, idle air valve, fuel pressure regulator, plugs, wires, fuel rail gaskets, fuel pump and now it's idling high, running rich and the fuel pump is whining.
Jul 7, 2019 at 1:36 PM
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ASEMASTER6371
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Good morning,

The fuel pump whining is no good. That is a sign of a bad fuel pump. It should make no noise at all.

As far as the high idle, did you check for vacuum leaks in the system?

https://www.2carpros.com/articles/engine-idles-too-high

Make sure the EGR valve is not open. If it is, that is a big vacuum leak.

Are there any codes set?

As far as running rich, did you check the injectors?

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Roy
Jul 8, 2019 at 4:13 AM
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JESSICA LAUBY
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It's a new fuel pump, but I also found out my buddy didn't put the sleeve on it. And I don't have access to an old version of code reader. These don't have the hookup for the new ones.
Jul 8, 2019 at 1:48 PM
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ASEMASTER6371
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Does not matter if the fuel pump is new, it should not make any noise at all.
.
Roy
Jul 8, 2019 at 6:26 PM