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#1
10-23-2009, 10:55 PM
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1995 E420: Desperate for Assistance
My E420 has gradually lost power over a few months. Now it can only run at 10 MPH. Acceleration shuts down the engine. I don't have access to a computer for diagnosis. The fuel pump was changed. What are the "rule out" steps I should follow?
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#2
10-24-2009, 01:34 AM
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Does your car have ASR (traction control)? Can you describe what leads up to the power loss? Has the wiring harness been replaced? Both the traction control system and wiring harness can cause drivability issues and therefore may be suspect. I would start by retrieving codes from the computer. If I'm not mistaken, you can check for a fault code without the use of computer on this model. A quick search of this forum should reveal a ton of info as the above two problems are very well known on the W124.
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#3
10-24-2009, 10:48 AM
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http://www.k6jrf.com/MB_S500.html
Follow directions on his site. I'll wager you have have in issues in one of more of the following: harness, ETA, cap/rotor, MAS, O2... How many miles? Jonathan
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Blue Ridge Mercedes Jonathan Hodgman http://www.blueridgemb.com/ Enthusiast Service, Restoration & Tuning. Follow Us on Facebook! Located in the Atlanta area Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines. Mercedes Repair Atlanta
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