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

Closed Thread
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-27-1999, 10:36 PM
Ammadeus
Guest
 
Posts: n/a
I have a 1989 300E. It is experiencing electrical failure after extended drives with air conditioning and equipment. I can jump start the car and it runs fine----and slowly discharges. Then try to restart, only to find the the engine will not turn over. Advice given---check the battery and alternator for adequate charge cycle. Also, check the voltage regulator to ensure operation. My question---concerning the prior repair of belt tensioner--a full replacement of $560.00. If the voltage regulator is the problem--did I need the belt tensioner replaced. The serpentine belt was obviously loose---but I wonder now if I was taken advantage of-----Is there a test to determine what specific repair is needed? Thanks for your assistance.

  #2  
Old 05-27-1999, 10:45 PM
Corky
Guest
 
Posts: n/a
If the belt was loose then the replacement of the belt tensioner was justified. Have you had the altenator output checked? What was the result of this test? It appears that you have a problem with the charging system.
  #3  
Old 05-27-1999, 10:52 PM
Ammadeus
Guest
 
Posts: n/a
Hi Corky---I have not had the alternator checked yet----What is your opinion regarding this type of problem? I thought the belt could simply be adjusted---like my 300D Turbo when belts were replaced. If it only needed to be adjusted----then I overpaid the service center-----What are your thoughts?
  #4  
Old 05-28-1999, 12:01 AM
Corky
Guest
 
Posts: n/a
Ammadeus
There is no adjustment persay on your 89 124
chassis car. When the belt is to be replaced the tensioner is releavied and then reset after the belt is reinstalled. The tensioners job is to maintain the tension of the belt. This is accomplished by a rubber type insert inside the tensioner. When this rubber material wears out tension is no longer maintained. If your belt had not been removed in the day or so pryior to this happening there is no other assumption to be made except for the tensioner to have failed.
Professional technicians are not in the business if repacing parts for no reason at all.
  #5  
Old 05-29-1999, 08:30 PM
Benzmac
Guest
 
Posts: n/a
I have seen many times that the belt tensioner fails right after being adjusted. This is especially true when the tensioner is old! The rubber will find a spot where it likes to travel and when a new alternator or belt is installed the tensioner fails. It is not the tech's fault when this happens, just an old part!! When I feel it is called for I write one on the estamate sheet to warn the customer in advance!!

------------------
Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
LEAD TECHNICIAN FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM



Closed Thread

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
86 300E won't start - starter question JFAZ Tech Help 11 02-16-2008 01:09 PM
86 300E hard start ebenz Tech Help 2 09-21-2004 05:48 PM
Rough Start 300E daviddonalson Tech Help 0 08-01-2004 05:14 PM
300e needs parking lights to start Skorupa Tech Help 2 03-28-2004 01:24 PM
300e hot start problem Tom Garrison Tech Help 4 08-14-2002 09:21 AM



All times are GMT -4. The time now is 06:38 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