Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 02-19-2002, 12:23 PM
Posts: n/a
Question Air Pump making muffled noise

I have a 90 300E 2.6 that has started making a muffled noise somewhat like an exhaust leak. It appears to be coming from the air pump. It cycles on and off during idle.

Can anyone help me with this problem. If the air pump need replaced, where can I get a rebuilt one. Doing a quick online check to the benz bin indicates that a new one will cost $676.
Reply With Quote
Old 02-19-2002, 06:18 PM
Mr. BILL's Avatar
Ghoulardi Rules!
Join Date: Aug 2000
Location: Austin, TX
Posts: 576
Do a search, someone recently posted they bought one for $290.00. That's what I paid for one a month ago. Call Texas European Auto Parts. 1-512-873-0586.

91 300E 120K
90 300SE 275K (sold)
92 BMW 525iM 120K
90 BMW 525iA 175K
85 300D 175K (sold)
84 300SD 245K (sold)
Reply With Quote
Old 03-25-2002, 10:24 PM
Registered User
Join Date: Mar 2002
Posts: 56
AIr Pump replacement

German Star is a good source. Has rebuilt air pumps with 1-year warranty for $325.
Reply With Quote
Old 03-25-2002, 10:31 PM
pmizell's Avatar
Benz Zealot
Join Date: Jun 2001
Location: Houston, Texas
Posts: 838

Have you ever had an oil leak near the AIR pump? (head gasket or timing cover leak?) I had that muffled noise as well, until I discovered it was a bad rubber elbow hose that connects to a metal pipe which in turn goes to the head. (oil had expanded and ruined it) There are actually two of them down there and they are elbow shaped.

Check those for leaks before you conclude that your pump has gone bad.

Good luck...


'91 300E, 208k miles
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Pump Removal / 1984 500 dloveless Tech Help 0 02-25-2004 12:43 PM
Air pump noise - 85 380SE Q Tech Help 12 09-26-2003 01:08 PM
What's up with the 119 Air Pump tivoliman Tech Help 4 03-24-2003 08:23 PM
240D Vacuam Pump Noise LarryBible Tech Help 6 03-31-2000 09:20 PM
MB 280S '76: What's the air pump do? Wiggie Tech Help 3 08-07-1999 11:31 PM

All times are GMT -4. The time now is 01:31 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page