1993 Mercedes Benz 400SEL oil pressure light/gauge malfunction.
Thread Starter
Newbie
Joined: Dec 2012
Posts: 9
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From: Conyers GA
1993 Mercedes Benz 400SEL
1993 Mercedes Benz 400SEL oil pressure light/gauge malfunction.
When driving above 70mph the oil light comes on and the guage slams in the corner to zero pressure. There is always sufficient oil in the vehicle and the engine temp is in the normal range. The dealer said there may be a wire harness problem that needs to be replaced for over $1,000. Already replaced the oil sending unit. Need your help in determining if I can replace only the wires affecting the oil pressure/guage instead of the complete wire harness.
Junior Member
Joined: Nov 2012
Posts: 19
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2004 E320
Since, your issue is affecting the major component of electrical system in your car it is important to replace the complete wire harness.
Always remember that this complete wire harness includes all the essential wiring connections of your car.
You would rather cost something and use your car in it's top condition.
Always remember that this complete wire harness includes all the essential wiring connections of your car.
You would rather cost something and use your car in it's top condition.
Member
Joined: Apr 2011
Posts: 103
Likes: 4
From: Northbridge, Ma.
94 S420,95 S500 ,96 S500
Since, your issue is affecting the major component of electrical system in your car it is important to replace the complete wire harness.
Always remember that this complete wire harness includes all the essential wiring connections of your car.
You would rather cost something and use your car in it's top condition.
Always remember that this complete wire harness includes all the essential wiring connections of your car.
You would rather cost something and use your car in it's top condition.
Junior Member
Joined: May 2015
Posts: 48
Likes: 4
140 208; e 38
When driving above 70mph the oil light comes on and the guage slams in the corner to zero pressure. There is always sufficient oil in the vehicle and the engine temp is in the normal range. The dealer said there may be a wire harness problem that needs to be replaced for over $1,000. Already replaced the oil sending unit. Need your help in determining if I can replace only the wires affecting the oil pressure/guage instead of the complete wire harness.
1992 500SEL
Last edited by e reyes; Jan 22, 2016 at 11:46 AM.
Thread Starter
Newbie
Joined: Dec 2012
Posts: 9
Likes: 0
From: Conyers GA
1993 Mercedes Benz 400SEL
I don't know what affect the catalytic converter had on the oil pressure. I had a problem passing my annual state (GA) emissions test. My service shop performed tune up and made adjustments to have the engine run better to produce cleaner emissions. It was discovered that my catalytic converter had totally collapsed. After replacing the catalytic converter, the oil pressure light and gauge problem disappeared. This has been 11 month ago. For more discussion email me at sam@jps-online.com.
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Junior Member
Joined: May 2015
Posts: 48
Likes: 4
140 208; e 38
I don't know what affect the catalytic converter had on the oil pressure. I had a problem passing my annual state (GA) emissions test. My service shop performed tune up and made adjustments to have the engine run better to produce cleaner emissions. It was discovered that my catalytic converter had totally collapsed. After replacing the catalytic converter, the oil pressure light and gauge problem disappeared. This has been 11 month ago. For more discussion email me at sam@jps-online.com.
and then replace the cat ill keep you posted thank sam65iam.
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