please help. high pitch SCREAMING sound from sensor in rear of intake manifold

blkdout6 · Dec 15, 2012

Hey guys. its been a while since ive been. So I'm stationed down at keesler afb in Mississippi training to be a meteorologist for the Marine Corps. if any of you remember I was the one that posted a forum about turning my v6 into a storm chaser. Anyways.... One of the airmen im in class with just picked up a 7thgen v6 coupe. Of course having tranny problems already. today we were working on it and after we drove around a loud screaming noise started.

This sensor has two vacuum lines going into it. it is located on the back of the intake manifold and has a small black circular canister on the passengers side. As soon as the car starts it literally screams very high pitched and very very loud. when you accelerate rapidly it calms down and when the car is turned off it slowly looses volume.

http://www.jbcarpages.com/honda/accord/2003/pictures/images/2003_honda_accord_picture (20).jpg

the sensor is the passenger side one on the back of the manifold right in the middle

Any help would be greatly appreciated
thanks brandon

dharding413 · Dec 15, 2012

Are you a member on V6P? I would post there as well in case nobody here can help.

RichBinAZ · Dec 16, 2012

Split vacuum hose? - leak somewhere?
Test vacuum lines with a mighty vac - works best when the vacuum lines dead end somewhere

BlkCurrantKord · Dec 16, 2012

You have a vacuum leak. Plug the hole.

blkdout6 · Dec 16, 2012

we pulled the vac lines from the sensor and it was still screaming and made absolutely no difference.

BlkCurrantKord · Dec 17, 2012

...you made the vacuum leak bigger, good job.

Trace all the vacuum lines, hoses, inspect the plastic box for cracks, etc. I can't even see what part or sensor you're talking about in the picture. What exactly were you guys doing when this started? You said you were wrenching on it.