Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 10-06-2004, 05:48 AM
Registered User
Join Date: Feb 2001
Location: Rome, Italy
Posts: 39
Sqeaking Noise Behind Dash

Good day fellow listers. Recently I started hearing loud sqeaking/screeching noise coming from behind the dash. It only happens when I release the gas pedal to change gear with the AC off. Last night after 3 hours I was able to isolate where the noise is coming from. The noise is actually generated by one of the flaps in the air distribution system of the ACC. This was confirmed when I unplugged the the green vacuum line from the small manifold under the hood on the passenger side.

Question is, is there any difference between the available ports in the manifold ? Last year I moved the green vacuum line from the original port to another free port due to vacuum leak (vacuum pump keeps on recycling). After the switch, the vacuum pump stops recyling itself. Did a couple of test last night. With the vaccum line in the original position, there are no squeaks but the vacuum pump continues to cyle, with the vacuum line in any other free ports, the vacuum pump does not cyle but the squeaking noise came back. Also, with the vacuum line in any port, I can hear a slight hiss coming from behind the dash which is only evident with the glove box and lower dash panel off.

I would appreciate your wisdom and suggestion in resolving this problem. Thanks !


BTW the car is a 96 W202, stick shift w/ automatic climate control
Reply With Quote
Old 10-12-2004, 08:42 AM
Registered User
Join Date: Feb 2001
Location: Rome, Italy
Posts: 39
Any experience, suggestions ? anybody ? Thanks in advance.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 12:09 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page