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#1
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Throttle Microswitch on a 126?
Is there a throttle microswitch on my 87 420SEL? If so, where is it located?
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#2
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Idle contact/full load is located on the throttle butterfly.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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can you get more specific on what Im looking for? with the airfilter housing removed, I see the throttle linkage and I dont see any type of a switch connectted to the linkage. there is a pic of a microswitch that Ive attached listed in the parts section but its for a 87' 300t. Am i looking for something similair to this?
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#4
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Here is a photo.
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I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k |
#5
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Thanks dpetryk! I understand now. I thought that there was a microswitch AND a throttle switch that I needed to troubleshoot and I was tearing my hair out loooking for the microswitch!
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#6
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The 103 engine does have both those switches.
The 420 does not?
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2012 E350 2006 Callaway SC560 |
#7
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HUGE thanks for the picture from me. I'd given up looking and concluded that this '89 w126 500SE didn't have such a switch at all. Which was a damn shame because the engine behaviour suggested that if there was one, it wasn't working.
Now, thanks to you, I've found the stoopid thing - and it isn't working! Well, it's intermittent: it operates if you let the butterfly snap shut, but letting it close gently usually doesn't close the contact. My question now - before I go burrowing into the engine to get my hands on it - is what am I in for if this can't be resurrected? Do I have to replace the entire Throttle Body, or can I get the switch separately? Anyone have a clue? I'd be very grateful for any info. CD |
#8
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Quote:
OK, I went hunting through the catalog, and found P# C7010-76651, which looks just the business. I'm very interested to note that the switch seems to have elongated screw holes to allow for a few degrees of adjustment, and I'll see if I can slacken the screws and wiggle the existing one first. CD |
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