1995 Buick Park Avenue rough running

Tiny
DAMNITJIM
  • MEMBER
  • 1995 BUICK PARK AVENUE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 118,000 MILES
I got a buick with a v6 3800 rough idle and misses while drive to stall.
I threw new pluggs and wires ran good for about 15 min then back to the same. It had been sitting for a while before I got it. Put sea foam in it and new gas I was thinking fuel filter? Any ideas running too bad to drive to auto parts store right now to get tested
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Sunday, March 7th, 2010 AT 9:57 AM

5 Replies

Tiny
RASMATAZ
  • MEMBER
Engine running rough or misfiring can be cause by the following:
1. Defective spark plug.
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
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Monday, March 8th, 2010 AT 6:07 AM
Tiny
DAMNITJIM
  • MEMBER
Plugs are new new wires
replaced vac hoses
injectors seem to be working can feel them
fuel pressure is about 47
put new fuel in
electric egr not sure how to test it
replaced maf
one coil seem out of spec replaced
any other ideas
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Saturday, March 20th, 2010 AT 11:53 PM
Tiny
RASMATAZ
  • MEMBER
Try cleaning out the idle air control valve and test the throttle position sensor
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Sunday, March 21st, 2010 AT 1:54 PM
Tiny
DAMNITJIM
  • MEMBER
Got a new idle control valve, put in new fuel filter, new 02, new cranksensor,
replaced upper intake man was leaking, did vac test held 19hg, now but it will still stall after some time, tps seems to be working not sure where now im going to have it tested tommorrow
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Tuesday, April 13th, 2010 AT 8:32 PM
Tiny
DAMNITJIM
  • MEMBER
It now seems hard to start when cold fires up then dies
warms up runs ok for about 15 min
maf was reading low
replaced lower manifold gaskets
cam sensor, had the icmod tested and passed twice
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Sunday, April 25th, 2010 AT 8:14 PM

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