bmxsteve

Out of no where this morning when I started my car up and backed out of my drive, when I fed my car gas, it ran really rough. It idles fine, its just usually rough when you rev in neutral or in gear when you hit the gas. Where can I even begin to look for the problem?? Engine check light didnt come on.

NYCe MaXiMa

iTrader: (9)

I think the best place to start with is taking a look at the spark plugs condition. Sometimes spark plugs can be the 1st indicators of trouble and point you in the right direction.. Look for any nasty black stuff.. If you have a Chiltons manual, in the back they have a pic of how spark plugs are supposed to look when they are in good shape and how they look with different problems..

bmxsteve

Well I agree with you, but I just put in NGK plat a month ago. Any other ideas b4 i have to resort to the dealer?

NYCe MaXiMa

iTrader: (9)

How many miles does the car have?
Any problems with things like gas milage? O2 sensors can cause some rough response, are you sure it's the engine? It could very well be sounds or feeling of the exhaust. Perhaps the Cat is getting old and clogged. Go under the car and bang on it with your fist, listen if anything rattles around in there. If yes, it's probably time to change it.