Whst would cause 01 grand am 2.4 motor to all of a sudden start sputtering and missing but only when the car gets to normal temp.when its cold it runs like a top

Asked by Jun 03, 2015 at 12:51 PM about the 2001 Pontiac Grand Am SE

Question type: Maintenance & Repair

Im stumped on this.it neve done this til I changed the top water outlet and imno dummy
and have been under many hoods.i checked for vacum leak or electrical connection that
maybe I knocked off but I can find nothing.could a little water run down on a sensor or
something when I removed the hoses during the water outlet removal or is it just
coincidence

2 Answers

coincidence, we have a 2001 2.4l . I would start with the air filter,make sure nothing is living in it, change if needed. $10 , if not move onto the throttle body, have to take off air filter and hose leading up to it ,careful not to break sensor on hose, take cover off to expose throttle body, two bolts and there should be 1 screw to a clamp thru a access hole in cover. get that off and there's the throttle body. buy throttle body cleaner and a clean rag and spray and clean the crud out...it will need it. then onto the iac sensor (idle air control) $125 .should be good after that,if not go to spark plugs n wires,and clean packs. $20 wires,$ 5 x4 spark plugs. hope that helps.

Oit turned out the coil pack must have went bad at that time I Replaced it and it solved the prob

Your Answer

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    8,000
  • #2
    John Saffrahn
    Reputation
    1,630
  • #3
    Tom Demyan
    Reputation
    1,620
View All

Related Models For Sale

Used Pontiac Grand Prix
11 Great Deals out of 2,440 listings starting at $1,900
Used Pontiac Firebird
6 Great Deals out of 693 listings starting at $2,850
Used Chevrolet Camaro
382 Great Deals out of 31,396 listings starting at $3,495
Used Ford Mustang
338 Great Deals out of 42,004 listings starting at $1,488
Used Chevrolet Impala
514 Great Deals out of 32,236 listings starting at $1,000
Used Chevrolet Malibu
1,004 Great Deals out of 54,102 listings starting at $1,599
Used Pontiac Bonneville
4 Great Deals out of 406 listings starting at $1,995
Used Toyota Camry
1,107 Great Deals out of 76,443 listings starting at $1,100
Used Honda Civic
623 Great Deals out of 52,144 listings starting at $1,491
Used Honda Accord
852 Great Deals out of 88,506 listings starting at $1,444

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.