Engine wont idle on its own. What's my next step?

Asked by Jan 20, 2013 at 02:32 PM about the 2002 Pontiac Bonneville SSEi

Question type: Maintenance & Repair

Engine was idling roughly, back and forth from around 700 to 1300 rpm. Replaced the IAC. Smoothed things out
for a day or two but now the engine will not idle on its own. Still starts but wont stay running without depressing the
accelerator.

4 Answers

124,025

I would check air filter if dirty replace. But most likely you have a vacuum leak. Listen for a hissing sound around intake area. Some use ether and lightly spray it around intake and vacuum hoses. If engine idles up when sprayed there is your leak. But use caution using this method.

4 people found this helpful.
108,985

Head over to GAOwnersClub.com - the Grand Am uses the same V6 engines and there's a couple of things to check for your idle speed problem.

1 people found this helpful.
3,135

any codes?

I'm having same problem but when I crank it up if it maintains idle it will surge then sputter and cut off

Your Answer:

Bonneville

Looking for a Used Bonneville in your area?

CarGurus has 331 nationwide Bonneville listings starting at $2,900.

ZIP:

Pontiac Bonneville Experts

  • #1
    ticklemedaly
    Reputation
    400
  • #2
    Js08016
    Reputation
    380
  • #2
    dandyoun
    Reputation
    380
View All

Related Models For Sale

Used Pontiac Grand Prix
15 Great Deals out of 1,684 listings starting at $1,500
Used Chevrolet Impala
525 Great Deals out of 26,142 listings starting at $995
Used Pontiac Firebird
5 Great Deals out of 692 listings starting at $3,995
Used Chevrolet Camaro
259 Great Deals out of 27,088 listings starting at $2,900
Used Pontiac Grand Am
735 listings starting at $2,490
Used Ford Mustang
296 Great Deals out of 39,978 listings starting at $1,312
Used Buick Regal
84 Great Deals out of 3,672 listings starting at $1,995
Used Chevrolet Monte Carlo
4 Great Deals out of 978 listings starting at $1,125
Used Buick LeSabre
1,335 listings starting at $1,499
Used Chevrolet Malibu
629 Great Deals out of 51,316 listings starting at $1,550

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.