polofool

my 96 mustang GT misses out at low RPMs, I've changed the plug wires 5 times and this fixes the problem for about 1 month then it slowly returns. I have an aftermarket H-pipe and my O2 sensors are causing my check engine light to stay on. Is there any way this could be tied to my problem? My plugs look fine, anyone have any suggestions!!!!!
Everything else is stock on the car except for a K&N air filter

BicketyBam

I assume you removed your cats, correct? Get some MIL's or a prgrammer to get rid of the H-pipe caused check engine light. Then if you get a check engine light you will know that it's for something else. You can also get the codes pulled to see what is showing up (besides the midpipe caused code.) In fact, that's what I would do. When I had a misfire problem, the codes tell you which cylnder is missing.

polofool

Thanks, I have had the codes ran and it just says there is an O2 sensor problem, I'm actually about to buy the device to fix that. I thought maybe I needed a new set of coil packs.

jdaniel

Before you buy new coil on plugs.. flip flop them around and see if that particular coil. If not then you will be wasting your money.

BicketyBam

If your car is truly misfiring, then it will throw a code. At least mine did.