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1999 Pontiac Grand Prix car acts like getting no gas

Tiny
MDLADY3
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
Engine Performance problem
1999 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic

car acts like it is getting no gas change fuel pump and crank shaft sensor starts and runs maybe half hour couple hours later it will start and does same thing
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Sunday, November 8th, 2009 AT 12:05 PM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Best solution is to measure fuel pressure at test port with a mechanical gauge.

What exactly is it doing, stalling, no power, missing?

The 99 3.4 engine had some problems with coilpack and plug wire failure.
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Monday, November 9th, 2009 AT 8:51 AM
Tiny
MDLADY3
  • MEMBER
  • 2 POSTS
Have change fuel pump and crank shaft censor and had ign module tested it is 3.8 engine it runs a couple hours and next day wont start and does not matter cold or hot it just dies out fuel pressure is 52lbs and when it dies out motor still cranks but wont start sometimes the engine will hydor lock when trying to start
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Wednesday, November 11th, 2009 AT 6:30 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Hydro-lock?

Then you have a bad headgasket, intake manifold or cracked head.
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Thursday, November 12th, 2009 AT 5:27 AM

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