00gtbk

Ok so when i start my car up it idles fine sometimes. but once it gets warm or i turn it off and start it again i can hear the miss in the idle it also misses while driving then. Also i have noticed a ringing type of a noise once the car hits 2000-2200 rpms then it goes away. Have recently replaced the IAC (thought that was the problem) and new plugs were installed around 1k miles ago. Please someone help me out thanks!

cliffyk

What modifications do you have, how many miles of the car, if over 80k have the plugs ever been changed?

Pull the COPs and examine the boots for signs of arcing or burning...

Endrance

I had a similar problem minus the ringing noise and it ended up being that one of the boots on one of the coils was melted. I'd check that out first because it doesn't really sound like an idle problem

massred98gt

i doubt there is a check engine light on right? um like stated above it could be a bad coil on plug. other than that lol its a crap shoot

00gtbk

at cliff yeah the plugs have been changed around 1k miles. other than performance mod its stock other than full exhuast and k&n. the cel is on. but everytime i get it check the only codes it throws are the cats are off.

00gtbk

ok updated i went and got the codes my car was throwing. P0420 P0430 P0305 i know the 420 and 430 is cause my cats are off. and the 0305 is misfire on cylinder 5(which one is that?)

cliffyk

#5 is the driver's side front, pull the COP and see what the boot looks like; also check the plug well and make sure it's clean/dry. If the boot is OK swap the #5 COP with the #6 and see if the problem moves with it...

00gtbk

THANKS CLIFFyk! your awesome.

Ps. what if it stays at #5 :0

00gtbk

Fixed the miss. now im just worried about this ringing noise. ive got a video clip but its hard to hear the ringing (grab a set of headphones and listen closely thanks! http://www.youtube.com/watch?v=ZQnUc1exjZ0