1990 Ford Bronco Fuel system

1990 FORD BRONCO
131,000 MILES • V8 • 4WD • AUTOMATIC
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TGSFORD
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  • 1 POST
When first starting the engine the fuel pump doesn't stop running after a few seconds like it's supposed to it's like it is not building pressure I checked it at the fuel rail port it was 40lbs I have changed the regulator and all relays,also the filter and checked the fuses.Any suggestions on what it might be?
Sep 8, 2009 at 12:22 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Have you checked fuel pressure drop off? That is when you shut the power to the pump. It should hold pressure for a certain amount of time.

Let me know.
Oct 23, 2009 at 6:48 AM
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