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View Full Version : Loud humming noise????



Joey D
07-12-2008, 10:06 AM
93 s/c. 5 speed. stock except for k&n filter. It started making a loud humming noise coming from the intake area yesterday. The car is idling at 2000 now and just humms while its idling. Also the left front brake started smoking, I think the caliper is stuck? Any suggestions about anything? Thanks.

Joey D
07-12-2008, 10:31 AM
update: took intake off..seems to be coming from throttle body...no idea..is the motor being starved of air or something?

seawalkersee
07-12-2008, 10:39 AM
Teach it the words and it will stop humming:p. Seriously though, take a screwdriver and thump the piss out of the IAB and the idle will change. That is a surefire way to fix it. The spring is bad in it and the valve inside is bouncing off of the spring and the seat causing the humming noise.

Chris

Joey D
07-12-2008, 06:28 PM
thanks for the response

seawalkersee
07-13-2008, 08:27 AM
Not a problem. If that is not the issue, I would be very surprised but I have other ideas.

Chris

Joey D
07-14-2008, 07:50 AM
got a new sensor. was 83 bucks. it fixed the problem though, thanks again.

seawalkersee
07-14-2008, 11:31 AM
Glad I could help....Usually when that noise is present, the IAB is the problem. There are times when it can be a vacuum hose that has a hole in it that can sound like that. Glad you got it.

Chris