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#1
11-08-2002, 11:50 AM
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Please help at the end of my rope!
First, thanks to everyone who has helped me over the years.
I will make this a short as possible... '85 500SEL, 250,000 miles. I cannot find the trouble; when I start it cold it idles extrememly rough. I have watched it as it warms up and it seems to go through the warmup process, i.e., idle adjusts as it warms up, etc. When cold, I can adjust the CO screw counter-clockwise (leaner) and it trims out. However, once it reaches operating temperature I have to turn it back clockwise (richer) to trim out. Technical: New top end 6 months ago, rebuilt Lambda box, rebuilt OZL, Idle control box has proper voltage, idle adjuster checks out, battery voltage to warmup regulator. I have driven myself nuts hunting for vac leaks. The only thing I am not sure about is I think my oil pressure sender is not working. I do not know if that makes any diff. Anything else I should check? PLEASE HELP!
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R. Downs 1985 500SEL (260,000 miles) SOLD! 1974 280 SOLD! 1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled) "I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls. 
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#2
11-08-2002, 12:54 PM
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fuel pressure test time.
sounds like the warm up regulator is DOA. Joe
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Project Smoker, '87 603 powered wagon Hauler, 96 CTD can you say torque? Toy 73 Cougar xr7 convertible Acme Automotive Inc. Raleigh NC 919-881-0364
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#3
11-08-2002, 02:20 PM
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Is the warm-up regulator repairable or is it R&R?
__________________
R. Downs 1985 500SEL (260,000 miles) SOLD! 1974 280 SOLD! 1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled) "I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls.
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