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#1
02-19-2006, 06:25 PM
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goofy symptom, W126 420SEL
I'm stumped...my 420SEL has has an intermittent stumble,rough running problem ever since I powerwashed under the hood about 30 days ago. It would initially not run at all, then ran OK sometimes, then would stumble and stall under load, but there was no rhyme or reason to it. Today I went for a spin...ran fine for 15 miles or so, a mix of Interstate and surfaace streets. In the past, it seemed to be worst trying to accelerate from a stop, that was when it was most prone to stalling and running funny. It was fine. I drove it several hours later, and it stumbled several times...the new symptom is this: I heard a clicking from the dash each time it stumbled...the recirc button on the dash would light up and click in rhythm with the engine stumble. I pushed the switch "off" and it didn't do it any more, pushed it "on" and it stumbled once, but never again when I manually switched the recirc on and off. Any thoughts and suggestions?
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2002 Ford ZX2 2 x 2013 Honda Civics 
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#2
02-20-2006, 10:49 AM
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I'd check your klima relay and your fuel pump relay..perhaps they got moisture in them from the power washing.
Pull the klima and take the car for a spin..see what's what. 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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#3
02-20-2006, 11:00 AM
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Not sure about your problem, but hope you have learned not to spray high pressure water on your engine and it's associated vulnerable electrical parts.
Steve
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#4
02-20-2006, 07:39 PM
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Yep, lesson learned. BTW, I work in a high volume luxury dealership bodyshop, and the porters spray off engines all the time, with no ill effects. I'd much rahter deal with a constant failure than an intermittent one, it's easier to trace.
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2002 Ford ZX2 2 x 2013 Honda Civics
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#5
02-20-2006, 07:41 PM
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I've been pressure washing engines for years... You just have to be selective about what you spray.. sensative items are either wrapped in plastic or carefullt avoided. No Ill effects as of yet
 Jonathan
__________________
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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#6
02-20-2006, 09:52 PM
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so....where are the relays I'm looking for? Are they the same as the ones on my "organ donor" 1988 300SE?
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2002 Ford ZX2 2 x 2013 Honda Civics
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