my nx 2.0 engine runs great. but once the engine gets up to normal temp, or actually when the idle cuts down when its cold, right when you rev the engine there is a loud sqeel coming from or under the intake. i have already tryed another air valve thing that is right under the intake and is bolted underneath it, between two 3/4 inch hoses. didnt change. sounds like a air valve somewhere but cant pinpoint anything.

any advice is well appreciated!

Squeal? Like belt squeal? Or more like air rushing, maybe even an exhaust noise?

Please be more specific, if possible... drugs and alcohol have dulled my imagination...

Get a few feet of hose, and use it as a listening tube while someone revs the engine, should help pinpoint the culprit.

done that, like i said it is coming from or around the intake manifold. and it is like air rushing. not a belt....

does the car idle rough? do you have a cold air intake?

no, the car runs fine, and i have a stock intake

Hmmmm? weird?

hhmmmm... yea!

any ideas would even be appreciated.

it does it after the idle drops down when first started. doesnt do it until then. (once hot) and so when you revv it, it does it while it revs down back to idle. and if run long enough it almost does it all the time occasionally..:rolleyes: :confused:

The IM gasket maybe?? Did you recently get the IM removed or reinstalled? maybe all the bolts didnt get tightened:confused: :confused: :confused: :confused: :confused: Thats my best guess:D

Or maybe its an exhaust leak:confused: Once again just a good ol' guess, from someone who thinks he knows a lot about sr20s:D

yea we made sure the intake manifold bolts were all tight... and there is no way it is an exhaust leak... keep em' coming

thanks

check engine light coming on??

naw man, shows no problems or lights... nothing but that sqeel

well.. how hard is it to remove the intake manifold with the motor in the car. to see if something like the gastket is screwed up of somthing....

that would be a pain in the ass, and removing it would probably damage the gasket so you wouldnt be able to tell if it was damaged in the first place.

check the actual idle control valve. if it is adjusted open too far it can sometimes cause an air rushing sound. try adjusting the idle and see if the sound changes pitch.

you can remove the manifold in the car. it is tough, but so are those gaskets. if done with some reasonable care and not wrecklessly the gaskets will be fine.

where is that idle control valve at on the manifold? right on the trottle body?(front top bottomn???)

thanks

Its right by the oil filter...has a plastic screw in it. Also, check the hoses under the intake mainfold, as well as the hoses on the vacume lines. Replace all the vacue lines and see if it helps.
~Ryan

take a look at this post, it has information about the vacume hose re-routing when you take your AIV and EGR off:
http://www.sr20deforum.com/showthread.php?s=&threadid=31814&highlight=Idle+Air+Adjusting+Unit