i swapped injectors yesterday and when i started it up it sounded supercharged. but its not. the noise was coming from the IAC. is it bad? ther is no ses light and it was fine before. btw its a bbk 58mm and ive had it on for 1100 miles wiithout the blower whine

 

If you suspect the IAC I would imagine that you're also having idle problems. Have someone turn the key to on/engine off while you listen for the IAC to position it's self.

When cold the ECM should shorten the pintle length to provide more air, when warm the ECM should lengthen the pintle to reduce air. If you can't measure any decernable difference in length hot, or cold, the IAC, or ECM, or anything in between is faulty.

If you have the time do the minumum air setting per factory procedure (baseline idle 400-450rpm, I think.)

If you need it I can email it to you, mine is an 88, but the procedure should be the same.

 

can you email that to me. oh and im having a little idle problem. minor details

 

ok replaced the iac and still sounds blown??? any ideas???

 

See if you can disassemble the housing and clean the TB at the same time.

 

when i replaced the iac i cleaned it with carb cleaner. im not hearing anything from the iac when the key is turned.

 

anyone???

 

Did you remove the housing and clean that and all the passages too?

You probably won't hear the IAC. What you need is a scantool to observe the IAC count when the car is running.

 

Did you forget to hook up the vacuum lines? Also, if you hear a whine check your alternator. I know mine started to sound like one when it was going bad.

 

housing was cleaned with carb cleaner and my toothbrush. vacuum lines all hooked up. its not the alt. it is coming from the iac for sure. when ii put my finger over the passage it kinda stops

 

Did you accidently crack the IAC housing? Or is the gasket maybe broken?
Sounds like a vacuum leak of some sort because there is nothing else but alternator or vacuum leak I have EVER heard from my motor that would sound like a blower whine. Get Carb Cleaner and spray it at the IAC when the motor is running... if the idle changes you found your problem.

 

If your finger is on the housing and it stops, which passage are we talking about?

 

did you ever get that fixed? id like to know since i just bought it lol. i forgot to even ask if anything was wrong with the tb.....

 

Did you have the tube going from the TB to the air cleaner on when you heard this whine?

 

yes and no i tried both