Rough Idel

[Wicked Racer]

i have a 2001 sedan with a magna flow cat back exhaust and cheap air intake. about a week ago it started ideling rough, doesnt stal gust idels rough at red lights iv changed spark plugs and its still acting up any suggestions?

[Mustangman25]

You might want to try upgrading to some better plug wires; I've heard about those really smoothing out the idle. I would also run a scan on it to see if the computer has memorized any codes recently that may be causing it to run rough. Just out of curiosity, what type of intake did you get? IDK if that could cause it to idle roughly (if it's not tuned properly) but it's just a thought.

[Wicked Racer]

Its cheap doesnt even have a name on it its simmilar to the svt short ram intake though the problem with it is its geting nothing but hot air and i destroyed my stock one so i just going to buy a cold air intake from focus sport.

[Mustangman25]

I would do the same and just get a good one like the FS you mentioned. That may help with the roughness slightly, and you'll also get some better hp gain.

[03Focus_Guy]

i agree if your "cold air intake" isnt getting cold air then whats the point if its forcing hot air into the engine that would make it run hard too. how many miles does it have on it b/c maybe your fuel injectors need replacing