Question about 1995 Pontiac Bonneville

1 Answer

Rough idle 1995

Only rough at idle in PARK OR DRIVE when stopped. Runs GREAT otherwise.

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  • Lloyd Gardinerjr Mar 19, 2014

    your idle sensor need to be change and also check your gas filter

  • Lloyd Gardinerjr Mar 19, 2014

    also your pluge can couse that

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  • Contributor
  • 23 Answers

Check your idlesensor might need changing

Posted on Mar 19, 2014

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2000 Grand Am rough idle

check vacuum hoses

Posted on Nov 01, 2008

acemasters
  • 27 Answers

SOURCE: 1995 Grand Am idles rough

sound very much like you have an air leak problem and even a seal problem to on the intake manifold and injector seals may be leaking same happend to me on my car and i found i had to strip it all again to sort it out .
the injector seals if they are not sitting right or just a slight spec of dirt there you have a problem.
air leaks to see if you do have one use wd40 can spray on the manifold and if the engine picks up you have a leak ok
i hope this helps
let me know how you go on thanks
acemasters

Posted on Jan 18, 2009

  • 1 Answer

SOURCE: searches for idle in closed loop

This could be many things. I had somewhat of a similar problem. Here are a few possiblilites though i wouldn't know unless i knew more. Before i do that though. If you press on gas while in neutral will the rpm drop WAY down and then possibly stall out?

Fuel Injectors might be going bad(least likely but possible)
Erg Valve
Oxygen sensor
Cpu
Your idle valve might be off
Timing might be off because of above.

Like i said i don't know exactally and i'm not THAT great and only someone who looks at it and stuff would know but i had somewhat similar problems. If you'd like to explain more email me darkspawnling@hotmail.com. Just add in your car and firebird or something in the subject. Hope it helps.

Posted on Feb 26, 2009

  • 106 Answers

SOURCE: 2001 Pontiac Grand Am Rough Idle In Drive Only

has it had a tune up?

Posted on Mar 24, 2009

  • 286 Answers

SOURCE: When putting van in gear the engine runs rough

how about putting the van in drive with one foot down hard on the brake and rev the engine, does it smooth out now? if it smooths out, i would pull the air cleaner tube to the throttle body and spray the throttle body with carb cleaner, be careful if using the red tube, I have had it blow off before into the intake, not good, open the accelerator and spray it out really good, it will to start until all the cleaner clears out.

Posted on Jun 29, 2010

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