2001 Oldsmobile Alero Loss of fuel pressure

2001 OLDSMOBILE ALERO
Avatar
ALEX TAMBURRI
  • MEMBER
  • 1 POST
Engine Performance problem
2001 Oldsmobile Alero 4 cyl Front Wheel Drive Automatic
----------------------------------------------------------------
This car came to us with intermittent starting problem. It failed to start while in our possession, we tested for fuel pressure there was none so we installed a bosch fuel pump and a new fuel pump relay this seemed to fix the problem. Three days later the problem has returned.
Sep 12, 2008 at 6:54 AM
Advertisement
Avatar
2CARPRO JACK
  • CAR REPAIR CONTRIBUTOR
  • 11,533 POSTS
Is it 0 fuel pressure or is it low? First mistake was installing an aftermarket pump, cant tell you how many I have had to change back out for poor performance. CAn you hear the pump running at all? If not need to seee if the relay is powering it up, check for power at the pump (gray wire). If powered, then the pump is bad. If not go to relay.should have power AT 87,ground at 86, 85 is th etrigger from the PCM to turn the pump on (power with key on/cranking), then 30 is to the pump.
Sep 12, 2008 at 7:34 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.