I scanned my 2000 grand am 2.4l got code p0300 i changed batt.starter.alternator.plugs etc. Starts and runs now but back fire's, has no power and engine shacks bad ontell About 3000 rpm??

Asked by Jan 23, 2015 at 12:32 AM about the 2000 Pontiac Grand Am SE

Question type: Maintenance & Repair

3 Answers

775

Google obd 2 p0300 battery starter alternator were waste of $. This may have a multiple coil pack for the ignition spark. I would start there. There are quite a few things to consider. I'm surprised there isn't more than random miss fires. That is why I would start at the coil paxk.

115

change your spark plug wires and coils. also your fuel injectors may be clogged. get a hei spark tester and do a spark test on your coils. You can get coils for 17.98 each at www.partsgeek.com.

115

your coils are definitely bad.

Your Answer

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 955 nationwide Grand Am listings starting at $2,295.

ZIP:

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
9 Great Deals out of 2,450 listings starting at $2,200
Used Pontiac Firebird
6 Great Deals out of 693 listings starting at $3,911
Used Ford Mustang
343 Great Deals out of 41,934 listings starting at $1,488
Used Chevrolet Camaro
379 Great Deals out of 31,404 listings starting at $3,495
Used Chevrolet Impala
505 Great Deals out of 32,225 listings starting at $1,000
Used Chevrolet Malibu
1,002 Great Deals out of 53,968 listings starting at $1,599
Used Pontiac Bonneville
4 Great Deals out of 411 listings starting at $1,995
Used Toyota Camry
1,096 Great Deals out of 76,461 listings starting at $1,100
Used Honda Civic
602 Great Deals out of 52,250 listings starting at $999
Used Honda Accord
793 Great Deals out of 89,088 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.