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

Asked by 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

loping idle is a symptom of plug wires.

4 of 4 people found this helpful.

the car doesnt miss fire at all tho.

They usually don't at higher RPMS.

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

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

1 of 1 people found this helpful.

ok sounds gud thanks

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

Your Answer


Looking for a Used Sunfire in your area?

CarGurus has 289 nationwide Sunfire listings starting at $2,100.


Pontiac Sunfire Experts

  • #1
    John Saffrahn
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Cavalier
822 listings starting at $1,695
Used Honda Civic
797 Great Deals out of 60,930 listings starting at $950
Used Pontiac Bonneville
485 listings starting at $2,995
Used Pontiac Firebird
9 Great Deals out of 766 listings starting at $2,995
Used Hyundai Accent
305 Great Deals out of 12,326 listings starting at $900
Used Pontiac Grand Prix
16 Great Deals out of 2,677 listings starting at $1,750
Used Pontiac Grand Am
1,086 listings starting at $1,500
Used Ford Mustang
589 Great Deals out of 39,484 listings starting at $1,895
Used Mitsubishi Eclipse
13 Great Deals out of 1,132 listings starting at $1,799

Used Cars For Sale

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.