Is it fuel pump, transmission, or spark plugs?


Asked by Jul 27, 2015 at 03:15 PM about the 2003 Chevrolet Malibu

Question type: Maintenance & Repair

two days ago i got gas at the store.  after getting the gas now when my car is in drive
it idles hard but is not bad when in park running.  i put heat in the car thinking it was
bad gas and injector cleaner with it in case it was some trash.  i just filled up again so
it cant be water in my gas.  the check engine light came on during all this and i had it
scanned and it said i had bad spark plugs.  Would that make it idle hard and make a
ticking noise.  or is it more of a transmission thing because it gets worse in drive?

2 Answers

John Carson

Spark plugs would be the place to start. Pull and if you know how, clean them after you examine them for signs of fowling. Re-set the gap and put them back in. I'd change up the plugs and not put them in the same cylinder. It it improves somewhat, I'd consider getting new plugs. It is not a gas starvation issue it sounds. Bad plugs could cause slight knocking in the engine. Sometimes we need to trust the codes. Plug wires may be another suggested change out.


Changed spark plugs, wires, and coil still did not work. Took it to get looked at and he hooked a pressure gague to where my spark plug for cylinder 6 was. He said there was no compression on 6 so its my head gasket or valve. 1200 to 1500 dollars. Thanks for the help

Your Answer

Add photo

Related Questions

Search Chevrolet Malibu Questions

Chevrolet Malibu Experts

#1 tenspeed
Reputation 1,820
#2 T_S_T
Reputation 1,450
#3 Tom Demyan
Tom Demyan
Reputation 1,120
View All

Related Models For Sale

Used Chevrolet Impala"
890 Great Deals out of 35,404 listings starting at $795
Used Honda Accord"
1,262 Great Deals out of 78,278 listings starting at $1,395
Used Nissan Altima"
1,380 Great Deals out of 87,019 listings starting at $1,195
Used Toyota Camry"
1,658 Great Deals out of 97,272 listings starting at $895
Used Nissan Maxima"
437 Great Deals out of 23,746 listings starting at $1,500
Used Hyundai Sonata"
1,009 Great Deals out of 51,539 listings starting at $1,200
Used Kia Optima"
605 Great Deals out of 32,281 listings starting at $1,000
Used Chevrolet Camaro"
814 Great Deals out of 39,001 listings starting at $2,650
Used Honda Civic"
1,125 Great Deals out of 57,702 listings starting at $1,295

Used Cars For Sale

2017 Chevrolet Malibu For Sale
22,924 listings starting at $15,168
2016 Chevrolet Malibu For Sale
246 Great Deals out of 23,042 listings starting at $11,990
2015 Chevrolet Malibu For Sale
186 Great Deals out of 5,097 listings starting at $9,995
2014 Chevrolet Malibu For Sale
97 Great Deals out of 2,976 listings starting at $8,900
2013 Chevrolet Malibu For Sale
193 Great Deals out of 4,850 listings starting at $7,588