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Old 11-19-2008, 09:18 AM
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Join Date: Dec 2007
Location: Fallbrook, CA
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Talking 300 CE cruise control

Mercedes owners of the world-

Just picked up a '92 300CE and the cruise control is not working, my mechanic says it is not a vacuum issue. What else could it be on this fine car? Should I be in for a big cost repair?

Thanks, Norm

Norm K.
'97 E420 Sport
'06 E350 Sedan
'67 Mustang Coupe
'70 F-250
'15 VW Jetta
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Old 11-19-2008, 12:34 PM
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Join Date: Aug 2003
Location: Charleston, SC
Posts: 1,095
You might want to get someone who knows what they are doing to diagnosis the cause and then repair it yourself. I might be actuator, amplifier, or maybe a relay. From my limited experience it has been the amplifier. If you have another amplifier I'd try that. The actuator is a pain to get to, at least on my 1992 M103 engine, it's under the intake manifold.
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Old 11-19-2008, 05:03 PM
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Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,767
First thing to do is change the brake lamp bulbs to the silver-base 21watt european bulbs. The copper base American spec bulbs do cause this problem, I just cured mine with new bulbs.


Gone to the dark side

- Jeff
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