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#1
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fast idel 500 SEL
I have 500 SEL 1984 recently at start up it is taking a little longer to turn over (6-8 Seconds) additionally intermittently it will go from idling its normal 600 RPM to 1500-1600 RPM and will not kick down. The engine is spotless all linkage is clean and working properly. No major changes have been done to the engine to cause this to happen. Does anyone have any suggestions it would be greatly appreciated.
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#2
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Check out what Steve Brotherton and Benzmac have to say in this thread. Can't say it lines up with your situation, but it's worth looking at.
Idle too fast or won't start
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Mike Murrell 1991 300-SEL - Model 126 M103 - SOHC "Fräulein" |
#3
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Check the throttle body switch. I suspect that it is not closing when the throttle is in the idle position. If this switch is not closed, the idle control unit will not work at all.
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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 |
#4
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Your overvoltage protection relay may be shot, or the fuse in it may be gone. This can cause a fast idle.
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Jason Priest 1999 E430 1995 E420 - retired 1986 420SEL - retired |
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