1997 Pontiac Bonneville fuel pump won't pump

Tiny
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  • 1997 PONTIAC BONNEVILLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 107,000 MILES
When I try to crank the car, there's is no gas getting to the motor.
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Thursday, July 24th, 2008 AT 2:55 PM

5 Replies

Tiny
SERVICE WRITER
  • EXPERT
Turn the key to the on position and have some one listen for a hum coming from the gas tank area.

IF none check for power getting to the pump.
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Thursday, July 24th, 2008 AT 3:03 PM
Tiny
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There is a slight hum but there's no---or not enough--- connection getting to the pump. I have already purchased and installed 2 different brand new fuel pumps, so it's not a faulty fuel pump, but a problem with the fuel or power getting to the fuel pump itself, I guess. What do I do next? Thanks.
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Thursday, July 24th, 2008 AT 4:10 PM
Tiny
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How many volts are getting to the pump?
Should be 12.6V.

Did you check fuel pressure spec?

I assume filter was replaced at the same time as pump.

IT will start when adding carb cleaner to the throttle body?
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Thursday, July 24th, 2008 AT 7:06 PM
Tiny
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How many volts are getting to the pump?= Haven't checked that as of yet. Did you check fuel pressure spec?= Not getting enough fuel pressure(5 lbs maybe)

I assume filter was replaced at the same time as pump=
Fuel filter is NOT clogged
IT will start when adding carb cleaner to the throttle body?= Yes, but will not run after that. Thx
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Thursday, July 24th, 2008 AT 7:40 PM
Tiny
SERVICE WRITER
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Strongly recommend replacing the fuel filter or it will void your warranty.

Check fuel pressure before filter if your getting good power.

We need to know if good power is there or if the pump is putting out good pressure. At the rail it may show low, but a plugged or kinked line may be present or a bad filter. Not sure how you determine the filter being clear, but if you didn;'t check pressure before the filter, you don't know. Unless there is something that can tell beyond what I know.

What brand are you using. Hopefully a delphi on this.

That is the only brand I use on GM. Airtex, and carter for example are garbage. In my experience.

Check for the power and good ground or pressure out of the pump would be my next step.
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Thursday, July 24th, 2008 AT 7:50 PM

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