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 09-29-2009, 11:04 AM
Registered User
Join Date: Dec 2008
Location: N. Texas
Posts: 58
Oil sensor?

There's some type of sensor on the passenger side of the engine, above the oil pan. It's leaking oil, which drips onto the exhaust pipes.

My dad and I tried to take it off and replace the o-ring, but we couldn't figure out how to take it out. We tried to gently pull it out, but it felt like it was connected to something on the inside.

This is on a 1991 420SEL.

Reply With Quote
Old 09-29-2009, 06:22 PM
babymog's Avatar
Loose Cannon - No Balls
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,767
It is the low oil level sensor.

Easiest to click on Buy Parts above, and look at a picture/drawing of the part. There is a chamber on the inside.

Gone to the dark side

- Jeff
Reply With Quote
Old 09-29-2009, 06:34 PM
Registered User
Join Date: Jul 2008
Posts: 1,236
I seem to recall a couple of bolts on that unit, if it's the same style as on my 300SE. I think 10mm. Could be wrong.

Anyway, replace the O-ring that seals the unit to the oil pan, and there's also another o-ring that goes on the stem where the plug attaches.

I took the opportunity to clean out the unit so that the float operates freely.

1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition
Reply With Quote
Old 09-30-2009, 05:52 PM
dpkreuze's Avatar
Registered User
Join Date: Apr 2006
Posts: 122
Got the Drip?

To reseal the level sensor connection, you will need to R&R the sheet metel pan on that V8. I agree that a new o-ring wiil reseal the connector if it survived the tug job.

When the people fear the government, that is tyranny. When the government fears the people, that is liberty. -- Thomas Jefferson
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 06:26 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