2000 sunfire revs up and down when below 2000 rpm????

Asked by John12__ May 01, 2011 at 01:52 PM about the 2000 Pontiac Sunfire GT Coupe

Question type: Maintenance & Repair

i have a 2000 sunfire that revs up and down when below 2000 rpms.  ive changed the intake manifold gasket, injector o rings, IAC valve, and the map sensor. and still no change any ideas??? thanks

7 Answers

Jeff answered 13 years ago

loping idle is a symptom of plug wires.

4 people found this helpful.
Mark helpful

John12__ answered 13 years ago

the car has a 2.4 liter engine so would it be the electronics under the cover on top of the engine since it doesnt have plug wires??? thanks

Mark helpful

Jeff answered 13 years ago

You'll have to test each coil plug for resistance. I sent you instructions in a message.

1 people found this helpful.
Mark helpful
20

Dan answered 9 years ago

The nut that answered this question meant to send it to another question oppps

Mark helpful

Your Answer:

Related Questions

  • 2000 sunfire revs up and down when below 2000 rpm???? 7 Answers

    i have a 2000 sunfire that revs up and down when below 2000 rpms. ive changed the intake manifold gasket, injector o rings, IAC valve, and the map sensor. and still no change any ideas??? thanks

    2000 Pontiac Sunfire GT Coupe

    -

    Maintenance & Repair

  • 2000 sunfire 1 Answer

    When I turn the car on if I try to turn the dim lights on the switch ticks like a signal light ticking sound and then the service wrench pops up but my brights will work ...bad switch?

    2001 Pontiac Sunfire

    -

    Maintenance & Repair

  • 2000 Pontiac sunfire Highbeam, lowbeam, DRL, headlamps and rear lights don't work 3 Answers

    2000 Pontiac sunfire Highbeam, lowbeam, DRL, headlamps and rear lights don't work. highbeam indicator on dash stays on. Marker lights, fog lights, turn signals, work fine. Any ideas what this could ...

    2000 Pontiac Sunfire GT Coupe

    -

    Maintenance & Repair

  • Power/Electrical Issue 2000 Sunfire 1 Answer

    For months my 2000 Sunfire had been losing power while driving the instrument panel (lights & gages), headlights, and radio all stop working sometimes hitting a bump will cause this to happen som...

    2000 Pontiac Sunfire SE Coupe

    -

    Maintenance & Repair

  • 2000 sunfire starting problems. 1 Answer

    When I turn the key to start, it turns over for a split second the starter disengages and starter just spins without starting. Battery is fully charged. Would I need a new starter?

    2000 Pontiac Sunfire SE

    -

    Maintenance & Repair

Sunfire

Looking for a Used Sunfire in your area?

CarGurus has 4 nationwide Sunfire listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Pontiac Sunfire Questions

CarGurus Experts

  • #1
    John Saffrahn
    Reputation
    4,300
  • #2
    Joeyadams
    Reputation
    1,610
  • #3
    Warren0007
    Reputation
    1,390
View All

Find great deals from top-rated dealers

Search

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.