Hi all...

I have an MB 560SEC-88 and the Crouse control is "pumping" when i go downhill.... any ideas how to fix it????

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-88 560SEC
-77 280SE
-71 Mercury Cougar Convertible
-84 GMC Pickup

Thanks to all the cruise control problems with MB's of all models for many years, your local dealer has a specialized diagnostic tool for finding cruise problems.

Most dealers either charge little or nothing for this service, and it's quick and simple.

Call your dealer...

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John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif

Most likely the cc amplifier is bad. Try lubricating the throttle linkage first.

Reference:

http://www.peachparts.com/shopforum/showthread.php?threadid=26030&highlight=cruise

Cheers, Andrew Seidel.

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86 560SEC
85 500SEC Lorinser
83 300D Turbo
75 240D

John:
The cruise tester has been around as long as the cruise system. It just tests the power and ground, all the switch contacts, the brake pedal switch, the speed sensor, and allows the motor to be run. If everything works on the car, it's the amplifier.
Gilly

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