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

LinkBack Thread Tools Display Modes
Old 12-20-2002, 12:45 PM
Posts: n/a
Unhappy 1987 260E Oxygen Light Illuminates


I have a chronic problem with my 260E with the O2 light comes on and off while I am driving all the time. I have replaced the O2 sensor, fuel injectors cleaned, fuel filter replace, major tune up, replace air flow meter and drained the fuel tank to ensure no water contaminates.
I currently has the car in a repair shop and the mechanic thinks that the KU Control Unit is bad referance part number 0055458032. I recently was told that the Mass Control Unit Part Number 011-545-79-32 was bad. Do you have any suggestions? These repairs and parts are getting very expensive to replace. Awaiting replies!

Reply With Quote
Old 01-12-2003, 01:29 PM
Posts: n/a
My '87 260E 110K has started behaving exactly as you described.

Here are my symptoms:
Oxygen sensor light flashing on and off accompanied by the engine stalling and losing power but not completely dying. This happens at all RPM's, at all different loads, hot and cold but mainly hot.

Computer replaced 3 months ago (with used). New oxygen sensor 3 months ago. New overvoltage relay 3 months ago. New cap, rotor, and wires 2 months ago. New tires, brakes and rotors all the way around - not that it should help.

New oxygen sensor within the last 3 days, computer swapped out during diagnosis - no change. Wiring harness inspected - looked good.

Shop has tried the temperature sensor but now thinks it could be the computer again.

Any ideas?

Reply With Quote
Old 01-12-2003, 03:42 PM
Posts: n/a
Lightbulb 1987 260 E Oxygen Light

I replaced the Jettronic Computer and it solve my problems. This unit is located behind the battery on the firewall. You may want to get your Air Flow Meter checked out before you replace another computer. I had multi problems with my car but I had to work through them all. Good Luck.
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 06:22 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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