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 04-12-2006, 03:18 PM
zcc's Avatar
zcc zcc is offline
Registered User
 
Join Date: Nov 2005
Location: Kuwait
Posts: 610
Angry What could distroy the EZL in the 560SEL 1989?

This is the secound time the ignition control unit EZL gets damaged on my 560SEL 1989. It's Euro specs and replacing it is so costy. The first time I replaced it with a new Bosch coil (the original green sticker) and new Beru ignition wire set, then after arround 3 months the EZL unit got damaged again. I wounder what are the main reasons that could damaged the most expensive part after the engine and transmission.

I Always use the original parts and the car is in a good condition. I use the best unleaded gasoline and change the oil periodically every 2000KM with Titan 15-40.

__________________
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

Last edited by zcc; 04-14-2006 at 10:25 AM.
Reply With Quote
  #2  
Old 04-12-2006, 04:57 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
since the original part lasted a long time & that one failed quickly, that is a good question!

ONLY time I was able to verify the cause of failure on those units was alter someone left the key on for HOURS..killed both EZL & coil!!
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Last edited by mbdoc; 04-13-2006 at 08:13 AM.
Reply With Quote
  #3  
Old 04-12-2006, 06:13 PM
C32AMG's Avatar
Registered User
 
Join Date: Mar 2004
Location: new york/orange county
Posts: 639
Charging or jump starting the car with the ignition on, voltage spikes from an over charging alternator, bad ground wires , your over volt protection relay should protect against that type of failure, defective relay. Static electricity, you should alway discharge your self when install , removing any ECU. Any Welding done to the car lately, that would fry any controller if not disconnected from the car.
Reply With Quote
  #4  
Old 04-12-2006, 06:26 PM
Super Moderator
 
Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
Did the replacement have the paste and the plastic on the back?
__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
Reply With Quote
  #5  
Old 04-12-2006, 06:50 PM
Registered User
 
Join Date: Jul 2000
Posts: 638
why oh why did my EZL's fry, oh why did they fry?

2 most likely causes are:
1) Excessive heat due to poor heat conductivity--low air flow, no heat transfer paste,etc
2) Low system voltage--leading to excessive current draw and excessive heat generation in the EZL
3) Loose/poor ground connections causing voltage spikes

Why do you have to use 'european' EZL--the american one will have less timing advance,lower RPM limit?. Won't it work just fine?
Reply With Quote
  #6  
Old 04-13-2006, 06:48 PM
zcc's Avatar
zcc zcc is offline
Registered User
 
Join Date: Nov 2005
Location: Kuwait
Posts: 610
Arrow

The EZL unit has the paste and the plastic on the back. And I'll never plane to use the American EZL because it's less powerful then the Euro one. My 560SEC has the 4x4 pins one but it sucks.
__________________
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
  #7  
Old 04-13-2006, 09:39 PM
Hit Man X's Avatar
I LOVE BRUNETTES
 
Join Date: Sep 2004
Location: FUNKYTOWN
Posts: 9,087
Thumbs up

Where is this EZL located? Apparently I need one for my M116 to M117 swap...

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
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 08:54 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