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

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-15-2007, 02:03 PM
Registered User
 
Join Date: Apr 2005
Location: Rockville MD
Posts: 833
W126 Intermittent Stalling Problem

My car has a history of the occasional stalling problem, where it starts right back up again. But in the last month or so, it's been different. Three times so far, it would stall and then not start for at least a minute. Then once it starts, it's perfectly fine again. Normally the engine runs with hardly a miss, no smoke, and decent power. Idle is 700/550.

This has me a little spooked now, as it did it again today while pulling into my driveway. It usually happens while slowing down or stopping, but one time it acted the same while trying to start it hot in a parking lot. Not knowing better, I would describe the symptom as very temporary vapor lock.

This is the worst problem to diagnose because it's intermittent. Has anyone had this problem and figured out the cause?

__________________
1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma
Reply With Quote
  #2  
Old 06-15-2007, 02:29 PM
Registered User
 
Join Date: Aug 2006
Posts: 141
Stalling 380

The idle control valve may sticking shut. When it stalls and won't restart smack the valve with a screwdriver handle and retry.
Mike
Reply With Quote
  #3  
Old 06-15-2007, 05:17 PM
Registered User
 
Join Date: Sep 2004
Location: DFW / Collin County Texas
Posts: 1,882
Do a search on Fuel Pump Relay. You can jumper the terminals when the car won't start in order to eliminate it as the culprit.
__________________
08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280
Reply With Quote
  #4  
Old 06-15-2007, 05:53 PM
Registered User
 
Join Date: Apr 2005
Location: Rockville MD
Posts: 833
Quote:
Originally Posted by gmercoleza View Post
Do a search on Fuel Pump Relay. You can jumper the terminals when the car won't start in order to eliminate it as the culprit.
The FPR was the culprit a few months ago, when the car would not restart at all. I redid a cold solder joint, and that fixed it. However I am not ruling anything out. I have my emergency wire in the glovebox.
__________________
1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma
Reply With Quote
  #5  
Old 06-15-2007, 09:24 PM
Registered User
 
Join Date: Sep 2004
Location: DFW / Collin County Texas
Posts: 1,882
Quote:
Originally Posted by raymr View Post
The FPR was the culprit a few months ago, when the car would not restart at all. I redid a cold solder joint, and that fixed it. However I am not ruling anything out. I have my emergency wire in the glovebox.
My FPR was resoldered once and still caused the behavior similar to yours. Each time it stalled or failed to start I inserted my paper clip and it started right up. So I ordered a new FPR, and it never happened again. It has been a year with no problems, and I drive it daily. It might not be a bad idea to consider a spare FPR anyway...
__________________
08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280
Reply With Quote
  #6  
Old 06-18-2007, 08:36 AM
Registered User
 
Join Date: Apr 2005
Location: Rockville MD
Posts: 833
Quote:
Originally Posted by gmercoleza View Post
My FPR was resoldered once and still caused the behavior similar to yours. Each time it stalled or failed to start I inserted my paper clip and it started right up. So I ordered a new FPR, and it never happened again. It has been a year with no problems, and I drive it daily. It might not be a bad idea to consider a spare FPR anyway...
Sure enough, the engine failed to restart, I took out the FPR, shook it and plugged it back in, and it starts. This was repeatable several times. All the solder connections still look OK. So like a caveman, I whacked it against something hard and that fixed it, for now. A new one is on the way.

__________________
1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma
Reply With Quote
Reply

Bookmarks

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 11:15 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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