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 08-14-2008, 09:30 PM
Registered User
Join Date: Jul 2008
Posts: 1
1994 E320 harness replaced but still issues

Hi everyone! I have been browsing for a while (since I got my car). I bought it knowing the CEL was on and it had a couple more issues. My main concern at the time was that the car was getting hot. I took it to a shop and they replaced the harness, that problem was soleved, and even the CEL was solved, until about a week later. The check engine light came on again and the radio stopped working, I can hear the static noise throught the speakers, but nothing else. The antena goes crazy sometimes when I try to turn the radio on, it goes up an down, but no music.
Has anyone have a clue as to what could be causing this?


Reply With Quote
Old 08-15-2008, 12:59 AM
cdplayer's Avatar
Just my Jeep and my S500
Join Date: Aug 2006
Location: Sacramento, Calif.
Posts: 581

My CEL was caused by the O2 sensor failure. New sensor fixed that. Had to reset the CEL afterwards to get the light to go off.

Go to Auto Zone and have them read the codes(if any) for free. Give you an idea of what's going on. As for the antenna/radio, pull out the head unit and check for secure connections.

There might be an outside chance your ignition switch is wearing out. Internally, the connections may be grounding out on each other.

Selling used Mercedes parts on Ebay...always changing...
cdplayer51 take a look!
Reply With Quote
Old 08-15-2008, 09:28 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Having the charging system tested first is a good starting point.
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
Reply With Quote
Old 08-17-2008, 03:51 AM
Registered User
Join Date: Sep 2002
Location: Allentown, PA
Posts: 482
Regarding the radio and antenna. Maybe "trigger" circuit in radio is going bad. Symptoms similar mine to yours. Trigger is blue wire at antenna and back of radio. Search "antenna trigger wire" and "radio removal" for more info & pics if you DIY.

You mentioned engine wire harness replaced and "other issues". Although not for CEL, the Battery aka "B" Harness if not replaced could cause problems.
"B" Harness connects:
Oil level = Brown/Black [left side, front, bottom of oil pan]
Oil Pressure = Brown/Green [left side, below oil filter]
Solenoid = Purple/White [on starter].
Main battery cable is usually ok. It's the smaller wires that have bad insulation. If handy you can easily replace them. Be careful with junction block to reuse & solder ends to wires.

PS Good to disconnect battery when messing with B Harness

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 - 2024, 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