Idle rough

Asked by Aug 13, 2015 at 05:16 AM about the 2000 Pontiac Bonneville

Question type: General

My 2000 Pontiac Bonneville 3.8 liter engine when I crank it up it runs rough but in a
minute or two it start running smooth, But when I place it in reverse or drive it start
running rough and seem to want to stall, But when i place it back in park or neutral the
engine smooths back out. What can be the problem that this is happening???

3 Answers

103,835

check your crank shaft sensor and cam sensor. https://www.youtube.com/watch?v=gcEyXOVp2KU

I don't think its neither of those joemom because the car starts perfect every time I turn it over I'm thinking that it maybe the Massive Air Flow Sensor for it run rough in drive or reverse but the engine run smooth when in neutral or park.

What if is runs really rough while in park or drive and continues to run rough until it reaches about 20 MPH then runs fine?

Your Answer

Add photo

Related Questions

  • Idle rough 3 answers

    My 2000 Pontiac Bonneville 3.8 liter engine when I crank it up it runs rough but in a minute or two it start running smooth, But when I place it in reverse or drive it start running rough and seem t...

    2000 Pontiac Bonneville

    -

    General

  • rough idle on 2002 pontiac bonneville 3 answers

    I just bought a 2002 pontiac bonneville and my issue is that it idles rough and the code comes previous owner said the code comes up as a misfire in cylinder 3. He said he checked the coil packs and...

    2002 Pontiac Bonneville SLE

    -

    Maintenance & Repair

  • Why won't my car run at idle, 1 answer

    Hey my car will run when i press on the throttle and hold it but it shuts off at idle. What's the problem

    1992 Pontiac Bonneville 4 Dr SE Sedan

    -

    Maintenance & Repair

  • Engine wont idle on its own. What's my next step? 3 answers

    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 r...

    2002 Pontiac Bonneville SSEi

    -

    Maintenance & Repair

  • Car is idleing very rough lost a lot of power when accelerating and losing a lot of gas 7 answers

    2 days ago my car was running fine my fuel sensor was bad so i never knew how much gas i had i just guesed based on mpg then i drove to work knowing i should still have at least 15 miles left in the...

    2001 Pontiac Bonneville SSEi

    -

    Maintenance & Repair

Bonneville

Looking for a Used Bonneville in your area?

CarGurus has 511 nationwide Bonneville listings starting at $1,799.

ZIP:

Search Pontiac Bonneville Questions

Pontiac Bonneville Experts

#1 ticklemedaly
ticklemedaly
Reputation 380
#2 Js08016
Js08016
Reputation 360
#2 dandyoun
dandyoun
Reputation 360
View All

Related Models For Sale

Used Pontiac Grand Prix
30 Great Deals out of 2,863 listings starting at $1,600
Used Chevrolet Impala
590 Great Deals out of 34,064 listings starting at $899
Used Chevrolet Monte Carlo
20 Great Deals out of 1,419 listings starting at $1,995
Used Pontiac Firebird
4 Great Deals out of 768 listings starting at $1,791
Used Chevrolet Camaro
244 Great Deals out of 31,194 listings starting at $369
Used Chevrolet Malibu
1,060 Great Deals out of 77,908 listings starting at $1,500
Used Pontiac Grand Am
1,183 listings starting at $1,599
Used Buick LeSabre
19 Great Deals out of 1,919 listings starting at $1,000
Used Honda Accord
948 Great Deals out of 77,739 listings starting at $899
Used Buick Regal
131 Great Deals out of 11,077 listings starting at $2,999
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999

Used Cars For Sale

2005 Pontiac Bonneville For Sale
83 listings starting at $3,495
2004 Pontiac Bonneville For Sale
3 Great Deals out of 66 listings starting at $1,799

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.