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 > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 03-11-2012, 11:49 AM
Registered User
Join Date: Jun 2007
Location: Waterloo Illinois
Posts: 1,336
1992 300D vacuum leak

I can hear air leaking from this thing, i know it is something to do with vacuum. What does this thing do? Is it normal for air to leak out when the car is shut off?
Attached Thumbnails
1992 300D vacuum leak-img_20120311_100545.jpg   1992 300D vacuum leak-img_20120311_100554.jpg  
Reply With Quote
Old 03-11-2012, 02:55 PM
compress ignite's Avatar
Drone aspiring to Serfdom
Join Date: Feb 2004
Location: 32(degrees) North by 81(degrees) West
Posts: 5,554
It's part of the Electro/Vacuum actuators

That control the EGR and the Flapper Valve Inboard of the Turbocharger.
(The flapper Valve's sole purpose is to "Choke Off" clean fresh air from the crossover pipe at idle)

GSXR shows you how to "Fix" ANY Future problems with that particular
Booger and all it's Brothers Here:
Wastegate actuator swap for OM602.962?
Attached Thumbnails
1992 300D vacuum leak-screenhunter_04-mar.-11-15.04.jpg  
'84 300SD sold
Reply With Quote
Old 03-13-2012, 06:25 AM
Registered User
Join Date: Jun 2007
Location: Waterloo Illinois
Posts: 1,336
Reply With Quote
Old 03-13-2012, 06:30 AM
Registered User
Join Date: Jul 2004
Location: Barrington, RI
Posts: 5,443
MB's name for it is a pressure converter (also called a vacuum actuator). Your 92 has two of them; the earlier design in the 90 and 91 utilized three. On my 91 they hiss at me a bit when I shut off the car, but I haven't noticed any ill effects. On my 92, their failure was the cause of my poor acceleration. Replacing them made a night and day difference.
06 E320 CDI "Benson", Platinum Blue, 174k mi
06 E320 CDI "Rutherford", Black, 144k mi
91 300D "Otis", Smoke Silver, 128k mi
98 E300 "Murray", Silver, 128k mi, Stage 2 Rocketchip chip tuned, under son's care

Twelve other MB's owned and sold
2002 Honda Odyssey 241k mi (want to name it "Homer," wife won't let me)
1961 Very Tolerant Wife
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 07:48 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