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 09-28-2007, 04:02 PM
Registered User
 
Join Date: Aug 2006
Posts: 195
560sel won't idle well

need some help, my 560sel,1990 model just won't hold idle. my rpms most of the time are around 4-5thousand. if the air is on or if you come to a stop at a light or sign then you are going to stall. replaced the plugg and wires what else could be going on?

Reply With Quote
  #2  
Old 09-28-2007, 04:05 PM
Registered User
 
Join Date: Jul 2000
Posts: 97
Check OVP in the fusebox. Happened to my 380 and that cured it.
Reply With Quote
  #3  
Old 09-28-2007, 04:24 PM
Registered User
 
Join Date: Aug 2006
Posts: 195
not the ovp relay just the ovp inside the fuse box which one is that?
Reply With Quote
  #4  
Old 09-28-2007, 07:14 PM
Registered User
 
Join Date: Jul 2007
Location: USA
Posts: 2,156
Before touching any electronics check for vacuum leaks otherwise youll be there longer than necessary.

After cheking for the vacuum leaks and doing a pressure test, then check the ovp and mas, fuses and relays, sensors, harness and make sure the electrical devies are working. Also build your a self tester to check the mas for error codes.
Having a very similar problem with my 190E2.6 and I have replaced the OVP and MAS and car still doesnt run. So the point is buying this or that part will not necessarly solve your problem.
__________________
1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)

Last edited by Oracle12345; 09-28-2007 at 10:58 PM.
Reply With Quote
  #5  
Old 09-29-2007, 12:04 AM
Registered User
 
Join Date: Aug 2006
Posts: 195
how to build a self tester? already re did the fuel injector o-rings and cups replaced all of the hoses and vaccum connectors except the 2 inder the manifold those 2 are a monster for someone with big hands.
Reply With Quote
  #6  
Old 09-29-2007, 03:51 PM
Registered User
 
Join Date: Jul 2007
Location: USA
Posts: 2,156
http://pages.prodigy.net/jforgione/MB_X11.html

I suggest bookmarking that site has some good info.

I have some documents that show what pins out of the 16 pin connector(in battery compartment) to connec to. To test the ecu connect the2 test leads from the test to pins 2 and 3.
To test mas for error codes connect it to 4 and 16(I think) might be wrong, woudl have to look at the document agian.
you probally have the cfi fuel injection system and would first the wiring harness for continuity then actually test the components of the fuel injection system.
__________________
1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)
Reply With Quote
  #7  
Old 09-30-2007, 03:24 PM
zcc's Avatar
zcc zcc is offline
Registered User
 
Join Date: Nov 2005
Location: Kuwait
Posts: 610
johnlo, Did you get your problem solved?
__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D

380SE 1984 <------- Totaled by flipping accident
300SE 1988 <------- Sold
Volvo S70 2000 <---- 4 family
Opel Omega 2002 <-- 4 family
560SEC 1989 <------ Sold
560SEL 1990 <------ Sold
560SEL 1991 <------ 4 my mother
560SEL 1989 <------ Sold
600SEL 1992 <------ Current


http://search.ebay.com/_W0QQsassZkhazenzcc
Reply With Quote
  #8  
Old 10-01-2007, 10:41 AM
Registered User
 
Join Date: Aug 2006
Posts: 195
not yet been out of town on business this weekend did get home until 8:30 sun night. will look into it tonight if possible.

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 12:34 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page