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1999 Pontiac Grand Am no fuel

Tiny
JJP607JC
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 177,273 MILES
I replaced everything just about and the fuel pump doesnt come on even though it was tested and works, tach doesnt move up when I had the engine running by pouring gas in the air cleaner. Not sure what else I can do I tryed just about everything even changed the computer and all please help been spending 2 much money on this car
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Thursday, June 18th, 2009 AT 10:17 AM

5 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
You need to check fuel pressure at the fuel rail with a mechanical gauge. Even though you can hear the pump, it is the fuel pressure that runs the car.
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Friday, June 19th, 2009 AT 8:01 AM
Tiny
JJP607JC
  • MEMBER
  • 3 POSTS
I direct wired the fuel pump and got fuel to the rail but wasnt going any further the fuel pump gages and injectors dont turn on
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Friday, June 19th, 2009 AT 5:26 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Check fuses and spark, if PCM does not see an ignition reference pulse it will turn pump off.
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Saturday, June 20th, 2009 AT 8:06 AM
Tiny
JJP607JC
  • MEMBER
  • 3 POSTS
Has spark and fuses and relays are good
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Saturday, June 20th, 2009 AT 11:14 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
If it has good fuel pressure at rail and spark, then check injectors with noid light, see if they are firing.
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Sunday, June 21st, 2009 AT 9:01 AM

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