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1990 Pontiac Grand Prix

Tiny
BILLS GP
  • MEMBER
  • 1990 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 78,000 MILES
Car womt start good spark and fuel pressure new plugs wires coilpacks and ecm any thoughts
Wednesday, March 11th, 2009 AT 4:34 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
We got spark and fuel pressure-my question here is it the correct fuel pressure EFI system don't like low pressure and also are the injector/s pulsing

Spark and Fuel pressure and injectors are okay-Check the valve and ignition timing report back with some results
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Wednesday, March 11th, 2009 AT 5:15 PM
Tiny
BILLS GP
  • MEMBER
  • 2 POSTS
Did all that but here is something funny I hit the rearbumber and it started ran for 2 hours shut off restart left alone for 1 hour will not restart tried bumber agin no luck
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Wednesday, March 11th, 2009 AT 8:05 PM
Tiny
RASMATAZ
  • MECHANIC
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Sounds like the fuel pump is on its way out
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Wednesday, March 11th, 2009 AT 10:34 PM
Tiny
BILLS GP
  • MEMBER
  • 2 POSTS
Do I need to drop the tank or can I go threw the trunk
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Thursday, March 12th, 2009 AT 7:47 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
No too familiar with this model might want to check it for an access panel under the seat or the trunk if not it has to come down.
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Thursday, March 12th, 2009 AT 12:40 PM

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