Question about 1997 Pontiac Trans Sport

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Fuel pump problems

I have a 98 transport that is giving me problems regarding fuel supply. i have had three fuel pumps installed and now when i wait for a day or two, it will start ok. could this be an electrical problem stemming from connections?

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  • Pontiac Master
  • 5,568 Answers

Just a couple of guesses-

- Fuel pressure regulator - Located (normally) at one end of the fuel rail and controlled by a vacuum line which could be cracked or disintegrated inside.

- A shock sensor - One of the cars in our family, a Ford Escort, had a mechanical/electrical sensor in the trunk and concealed behind carpeting if I remember right.
Traveling over our rough private easement at speed would cause this thing to trip and it had to be manually reset to re-enable voltage to the fuel pump.
This thing was not well documented and a mechanic clued us in.
Since this ****** has a switch built-in, the switch could well fail intermittently causing the kind of problem you are having.

Also some theft prevention systems turn off the fuel pump to disable the vehicle; these would also have switches in them carrying the current for the fuel pump.

It would be helpful if you had a manual on your ride (Haynes or Chiltons) so you could study the electrical systems to see if there are these items present.

Posted on Jul 09, 2008

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