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 02-24-2001, 01:36 PM
Posts: n/a
I have a 1990 300D with 120K. When I put down the door lock from inside the car,on the drivers door, all the doors lock but will not open for about 40 secs. There is a hum from the right rear door, and none of the doors can be opened from the inside till the hum stops. Then they can be opened, and all the door locks open when the drivers door is opened. I have a hunch it is something to do with the vaccuum system...but please help as it is a very dangerous situation not to be able to get out of the car for this time that the locks inoperable.
Thanks for any advice......RSL007
Reply With Quote
Old 02-24-2001, 03:20 PM
Registered User
Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
It sounds like you have a vacuum leak. The hum is probably the vacuum pump which is in the vicinity of the right rear door but under the seat, or it is a audible leak inside the door at the actuator. If the locking system is losing vacuum, the actuators may take forever to complete locking and unlocking cycles. I would start by checking the right rear actuator for leaks. Start with a visible inspection of the hose, fittings, etc. Then apply a known good vacuum source and observe for function. The pump is probably OK, but it's not able to compensate for the size of the leak.
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.
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
1997 SL500 Console won't open mikeybob2 SL Forum 1 08-04-2004 12:12 PM
1997 SL500 Console won't open mikeybob2 Tech Help 0 08-02-2004 08:00 AM
SLIM JIM on the rear doors??? GANIMAL Diesel Discussion 16 06-17-2004 01:18 PM
Rear right door won't open on my S350 rekatt Tech Help 6 01-13-2003 03:29 PM
Rear dome light does not function with any doors mikey-az Tech Help 3 06-24-2002 12:13 AM

All times are GMT -4. The time now is 09:17 PM.

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