Car revs high.

Asked by Jun 23, 2017 at 01:38 AM about the 2008 Pontiac G5 SE Coupe

Question type: Maintenance & Repair

So I bought a throttle body cleaner and on the side of the
can it told me to take off my entire air intake system and
turn on the car and have someone press the gas pedal to
move the flap so cleaner can get in. I tried to turn the car on
but it started for around 2 secs then stalled out I tried it
again and the same thing happened so i just manual
pushed the flap with my fingers and cleaned it. I put
everything back together and started the car. it revved 500-
1000 more then it usually does and when I put it in Drive it
doesn't crawl, it feels like I'm pushing the gas a bit. And the
throttle is very laggy  I push the gas then let go but the revs
still stay at position for around 2 secs then they go back
down slowly.

Is this because my MAF sensor didn't sense any airflow
when I took off the intake and turned on the car and now
it's overcompensating for it ? How do I fix it ?

3 Answers

20,935

May need to reset the computer but IAC may still be dirty, I take throttle body off, then remove the IAC and use CRC throttle body cleaner and a bunch of different size & shape nylon brushes to clean and reinstall them with new gaskets. Did you touch the MAF with your fingers or anything else and did you disconnect them and forget to reconnect and is the check engine light on?

20,935

You should not of done that type cleaning as the sensors and computer read it as the air leak (into engine) like a intake gasket bad. Make sure you got the intake back together and air tight. All air has to pass by the sensor or it will run bad, and also you may have a vacuum line off somewhere.

20,935

All engines with a MAF & IAC you never clean with the engine running. You can in most cases clean the MAF with MAF cleaner without removing it if you can see the filament and you never touch the filament either but you have to remove the throttle body & IAC valve to clean them. Make sure all the electrical connection are back together tight too and clean correctly and reset computer, I am sure if it was not on the check engine light is on now.

Your Answer

G5

Looking for a Used G5 in your area?

CarGurus has 431 nationwide G5 listings starting at $1,495.

ZIP:

Pontiac G5 Experts

  • #1
    Js08016
    Reputation
    40
  • #1
    COMETGUY61
    Reputation
    40
  • #3
    Tom Demyan
    Reputation
    30
View All

Related Models For Sale

Used Pontiac G6
48 Great Deals out of 3,799 listings starting at $1,250
Used Chevrolet Cobalt
30 Great Deals out of 3,495 listings starting at $1,800
Used Pontiac G8
13 Great Deals out of 415 listings starting at $4,500
Used Pontiac Grand Prix
11 Great Deals out of 2,561 listings starting at $1,750
Used Jeep Grand Cherokee
949 Great Deals out of 71,834 listings starting at $1,200
Used Honda Civic Coupe
165 Great Deals out of 12,710 listings starting at $1,695
Used Ford Mustang
555 Great Deals out of 36,487 listings starting at $1,500
Used Ford Focus
734 Great Deals out of 57,247 listings starting at $1,150
Used Chevrolet Malibu
1,026 Great Deals out of 62,790 listings starting at $880
Used Mitsubishi Eclipse
31 Great Deals out of 1,175 listings starting at $1,999
Used Chevrolet Impala
534 Great Deals out of 34,805 listings starting at $990

Used Cars For Sale

2009 Pontiac G5 For Sale
4 Great Deals out of 139 listings starting at $1,495

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.