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 05-16-2003, 02:13 AM
Posts: n/a
190E Aux Fan Questions again...

OK sorry for posting another aux fan question. I did do a search and have psoted before but still no luck. herea re my questions please help.

1987 190E 2.3 78,000 miles. I have never heard the aux fans engage on this vehicle and now when I am driving I am getting funky guage readings. Most of the time it is decent, no higher than 100. But the last two days it is going higher (sometimes to the red line for a minute and then quick down to normal then back up again) and higher and nothing is engaging (aux fans). From what I have read so far it seems to either be a relay or a sensor??. Here are my questions in this model what can i do to make the fan go on, what do i pull to trigger them in the engine. Which sensor if disconnected will trigger them and also where is it? if this does not trigger it then I assume it is a relay? Where is this located in my vehicle? I looked in the fuse box and I have at th rear of it two boxes, silver and black and a space next to them that is empty? (not sure if something is missing or just an option I do not have?) From reading here I am thinking that I need a relay? I see nothing with a fuse on top of it? Ugh, thanks for everyones help. I would take it to the dealer but I have a feeling it is something easy or simple that I can diagnose myself but am having no luck) So to summarize:

1. What can i pull in the engine to trigger the fans

2. If this does not work than I can assume it is the realy hopefully? Where is it and what does it look like?

As you can see I very green when it comes to repair but it seems like I should be able to do this right? ugh, thanks
Reply With Quote
Old 05-16-2003, 08:41 AM
Registered User
Join Date: Mar 2003
Location: New Hampshire
Posts: 158
on my 88 190e 2.3, I was able to engage the fan by pulling off the harness from the sensor on the top of the block, closest to the front of the car. My sensor has a red base. Then I held a staple in a pair of needle nose pliers and pushed the staple into the harness I had pulled off the sensor. Then the fan came on. I ended up needing a new sensor. Now the fan works fine.

BTW, this is for the fan driven by the electro magnetic clutch. Not the aux. electric fan.

If I remember correctly, i think I pulled off the harness of the sensor behind this one and the aux. fan came on automatically. Worth a try.
Reply With Quote
Old 05-16-2003, 04:37 PM
Posts: n/a

bump, help please?
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 12:47 PM.

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