Rough Idle

[PHT33]

R33 gtst rb25det...got a rough idle but apart rom that car goes hard...

Any ideas to help look into something would be awesome...thanks in advance.

[carizma]

sounds like coil packs.

R33 gtst rb25det...got a rough idle but apart rom that car goes hard...

Any ideas to help look into something would be awesome...thanks in advance.

[PHT33]

Have replaced the coil packs. Anyone had an O2 sensor fail?

[bevo89]

rough idle as in what? have you tryed the AAC valve? there is a DIY clean in the diy section

[PHT33]

Yes. have cleaned that. Rough idle as in, half missing...not dropping a cylinder completely or anything though. Have cooler, afc controller, kkr 430, 3" zaust, vent to atmo catch can, jjr coils, iridium plugs... Anyone done any of these mods and been able to link a similar problem?

[PHT33]

As soon as the revs start to pick up it goes away. Car still goes hard.

[Julz89]

mmm sounds like fouled spark plugs i no someone who had the same problem but the car was hardly drivin we put a new set of plugs in idled fine?? how r ur plugs?

[PHT33]

Brand new plugs. Thank you for your help...new O2 sensor...$200...fixed line....priceless!