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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-22-2002, 11:52 AM
benzoso
Guest
 
Posts: n/a
Unhappy Oil pressure, 190e - 89

My 89 190e 2.6 runs and idles well. But the oil pressure gage sometimes reads below 1 or no pressure at all when I am at a stop. The car was serviced 3 months ago by a MB dealer and the diag. computer did not report any problems from the pumps.

What can I do? I also learn from a mechanic that this particular model is equipped with 2 oil pumps. The main with easy access (kind of) and the aux. which is built somewhere in a more difficult position. Is there a troubleshooting guide that I could use before trying to replace the pumps, just without farther convincement?

The engine has a slow oil leak, apparently in the front of the engine, something that I cannot see. I need to add oil every 2 weeks, depending on how much I drive the car. Would this be the source of the problem, can I use with confidence an aftermarket oil treatment or oil stop-leak to take care of the problem?

Please advise.

benzoso.
Reply With Quote
  #2  
Old 03-22-2002, 12:09 PM
Ali Al-Chalabi's Avatar
Senior Member
 
Join Date: Nov 2000
Location: Knoxville, TN
Posts: 1,837
Low oil pressure is not a problem that can solely be attributed to a problem with the oil pump. It could be that the bearings in your engine are worn out and the engine is in need of a complete rebuild. It could also be that the gauge is inaccurate.

An external oil leak will not affect pressure.

I personally do not believe in aftermarket oil treatments as I am sure almost everyone here will agree. I don;t think there is even a snake oil that attempts to make the false claim that it can raise your oil pressure.

Oil pressure problems will not show up with diagnostics.
__________________
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record
Reply With Quote
  #3  
Old 03-22-2002, 12:09 PM
Registered User
 
Join Date: Jun 1999
Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
do not pour anything foreign into your car. front cover
oil leaks/seepage is common on these cars. do a search
and you will be inundated with volumes of suggestions
to fix it. choose what is applicable.

zero oil pressure while driving should be a concern.
zero pressure while idling is also a concern but remember
oil pressure normally drops when oil is hot and circulating
in your system. below 1 bar is not uncommon.

i would suggest using a heavier oil and observe your
guage, before tearing your car apart. cheers and welcome!
Reply With Quote
  #4  
Old 03-22-2002, 04:07 PM
Ali Al-Chalabi's Avatar
Senior Member
 
Join Date: Nov 2000
Location: Knoxville, TN
Posts: 1,837
If there is no pressure at idle, then there is a problem. The minimum acceptable pressure at idle is just under 1 bar.

Which leads me to ask what I forgot to in the first place, what weight of oil are you using? Also, please check the accuracy of the guage first to verify that it is indeed giving the proper readings.

And remember, that sucker should be pegged when the egine is revved.
__________________
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Demystifying Oil - General high-level info about oil haasman Tech Help 6 04-21-2004 03:28 AM
Oil Pressure Mystery Mercedes Man Diesel Discussion 2 04-24-2002 11:33 PM
oil temp switch or oil pressure switch? benzat Tech Help 4 12-04-2001 11:52 PM
1983 300sd oil pressure 2X too high mike webb Diesel Discussion 0 08-09-2001 03:22 PM
83 240D oil pressure ncarter Tech Help 1 03-07-2000 06:39 PM



All times are GMT -4. The time now is 01:16 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page