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Idle problem

Tiny
ANTON925
  • MEMBER
  • 1994 BUICK CENTURY
  • FWD
  • AUTOMATIC
  • 175,000 MILES
1994 buick century 4cyl 2.2 176,000 miles I replaces spark plugs, ingniton wire 2 coils gas filter, air filter, fuel 3 injectors, EGR valve, map sensor, Fuel pressure is 140, compresion is 130 all cylinders. No vacuum leak detected.
Car runs on open road fine power ect but idle rough specialy on warm up condition and stalls at stop or run rough, this time when I shift in neutral some times accelaret and idle runs better do you have answer need help anton
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Wednesday, March 9th, 2011 AT 2:16 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Clean out the idle air control valve and EGR valve and recheck the fuel pressure its too high
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Wednesday, March 9th, 2011 AT 2:33 AM
Tiny
ANTON925
  • MEMBER
  • 7 POSTS
I FUEL PRESSURE IS TO HIGH SHOULD I REPLACE FUEL PRESSURE REGULATOR PRESSURE IS I BELIVE 41 NOT141 ENGINE RUN IDLE ONLY WHEN IT GET WARM ON FREEZING MORNINGS JUST FINE
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Thursday, March 10th, 2011 AT 1:52 AM

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