Isn't that what happens when the rubber o rings on the oil filter stalk thingus fail? I changed the oil in my 190D last weekend and when I went to pull the o rings off they split into many little pieces and fell on the ground... Sure glad I thought to replace them. -Curt Date: Tue, 27 Jun 2006 12:18:04 -0400 From: "J.B. Hebert" <[EMAIL PROTECTED]> Subject: [MBZ] Sudden loss of oil pressure To: Mercedes Discussion List <mercedes@okiebenz.com> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=us-ascii; format=flowed; x-avg-checked=avg-ok-455D26F6
On my way into work today my low oil light came on. Oil pressure was fine, so I continued on another minute or 2 and the light went out. A few miles later I noticed that my oil pressure had started to fall. When it dipped below .5 bar, I shut off the motor and coasted to the side of the road. The low oil light had not come back on again. I popped the hood and checked for leaks or any indication of a problem. I found no leaks, and the oil level was between min and max on the dipstick. I restarted the car and the oil pressure went to about 1.2 bar, but would not go higher as RPMs increased. After 10 seconds or so of running it started to drop again so I shut the motor off again. The vehicle has shown no signs of a failing oil pump or any other issues. It normally idles around 1.8 to 2 bar and pegs the needle quickly. There are no odd sounds, smells, or sights. Now, I changed the oil filter last night (Mann filter, just like always), which is the only thing I've done to the car recently. I have no idea if it's coincidence or not, but I plan on pulling the filter tonight to see if I can see anything wrong. Even if the filter was faulty and stopped oil flow, there is a filter bypass so I should not have seen the symptoms I'm seeing. It appears that the oil is not flowing back down to the sump quickly enough and the pump is sucking air. I'm having the vehicle towed home for further diagnosis, but welcome any suggestions. Thanks, J.B. Hebert --------------------------------- Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2ยข/min or less. From [EMAIL PROTECTED] Tue Jun 27 18:09:49 2006 Received: from sccrmhc13.comcast.net ([63.240.77.83]) by server8.arterytc8.net with esmtp (Exim 4.52) id 1FvI0T-0005kb-Bl for mercedes@okiebenz.com; Tue, 27 Jun 2006 18:09:49 +0000 Received: from [192.168.1.2] (c-24-3-195-27.hsd1.pa.comcast.net[24.3.195.27]) by comcast.net (sccrmhc13) with ESMTP id <2006062718093901300b36bse>; Tue, 27 Jun 2006 18:09:39 +0000 Message-ID: <[EMAIL PROTECTED]> Date: Tue, 27 Jun 2006 14:10:34 -0400 From: Marshall Booth <[EMAIL PROTECTED]> Organization: University of Pittsburgh School of Medicine User-Agent: Thunderbird 1.5.0.4 (Windows/20060516) MIME-Version: 1.0 To: Mercedes Discussion List <mercedes@okiebenz.com> References: <[EMAIL PROTECTED]> In-Reply-To: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus-Scanner: Clean mail though you should still use an Antivirus Subject: Re: [MBZ] Sudden loss of oil pressure X-BeenThere: mercedes@okiebenz.com X-Mailman-Version: 2.1.7.cp2 Precedence: list Reply-To: Mercedes Discussion List <mercedes@okiebenz.com> List-Id: Mercedes Discussion List <mercedes_okiebenz.com.okiebenz.com> List-Unsubscribe: <http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com>, <mailto:[EMAIL PROTECTED]> List-Archive: </pipermail/mercedes_okiebenz.com> List-Post: <mailto:mercedes@okiebenz.com> List-Help: <mailto:[EMAIL PROTECTED]> List-Subscribe: <http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com>, <mailto:[EMAIL PROTECTED]> X-List-Received-Date: Tue, 27 Jun 2006 18:09:49 -0000 Trampas wrote: > Bad ground between engine and chassie? High resistance in the circuit (like a loose ground) results in HIGH oil pressure reading. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) "der Dieseling Doktor" [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)