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

705

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.

105

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.

105

your coils are definitely bad.

Your Answer

Add photo

Related Questions

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,238 nationwide Grand Am listings starting at $1,595.

ZIP:

Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
tenspeed
Reputation 7,570
#2 John Saffrahn
John Saffrahn
Reputation 1,590
#3 Tom Demyan
Tom Demyan
Reputation 1,410
View All

Related Models For Sale

Used Pontiac Grand Prix
21 Great Deals out of 2,860 listings starting at $1,995
Used Pontiac Firebird
8 Great Deals out of 741 listings starting at $1,800
Used Ford Mustang
364 Great Deals out of 46,842 listings starting at $1,999
Used Chevrolet Impala
514 Great Deals out of 29,179 listings starting at $1,100
Used Honda Accord
718 Great Deals out of 87,020 listings starting at $1,250
Used Chevrolet Camaro
156 Great Deals out of 32,706 listings starting at $1,995
Used Chevrolet Malibu
834 Great Deals out of 81,209 listings starting at $995
Used Toyota Camry
831 Great Deals out of 89,155 listings starting at $950
Used Nissan Altima
852 Great Deals out of 78,719 listings starting at $1,677
Used Pontiac Bonneville
536 listings starting at $3,699
Used Honda Civic
494 Great Deals out of 87,973 listings starting at $1,499