1991 Buick Lesabre My lesabre dies and starts right back up

1991 BUICK LESABRE
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MIKERS1234567
  • MEMBER
  • 2 POSTS
Ill be driving and my car would driving fine but then the engine would die but my car would be on and i would turn it off and it would start right back up and drive.

I have replaced my fuel pump and filter already and my pvc valve.

I have also noticed that my rpms would wobble on the speedometer while im idle and while im driving right before the car dies the rpms would drop or jump up and down and then wouldnt seem to give the engine aanny gas and then it dies.
Jan 13, 2010 at 7:33 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Has the check engine light come on? Does the car always start right back up?
Jan 21, 2010 at 4:09 AM
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MIKERS1234567
  • MEMBER
  • 2 POSTS
The car always starts right back up and either i can keep driving or it'll die again after i start driving it again sometimes soon after or wont even die after i start it up again.

and the check engine comes on but so does all of the other lights on the speedometer when the car dies

the engine would be off but the car would be on.
Jan 24, 2010 at 2:44 AM
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BUICKBOY91
  • MEMBER
  • 5 POSTS
have you looked into your idle cotrol valve? and the idle motor? sometimes carbon builds up on them also you can easily clean the throtle body when you take off that tubing. Clean all the black stuff out (carbon build up). have you checked your fuel pressure? maybe the installation wasn't good(on the pump or filter) and there is low pressure? Let me know.
Nov 11, 2011 at 10:19 AM
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