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intermittent cruise control . . . where should I look first? 700 1990

posted by  zrubin on  Thu Nov 29 05:08 CST 2007
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last visit: Thu Sep 20 15:45 CST 2012
[RELATED]

You didn't mention whether your car (740?) has a manual transmission...I would start by checking the vacuum hoses on the pedals (brake pedal if AT, brake and clutch if MT) - the cruise on my 740 worked intermittently until I cut about 1/2" off the end of the vacuum tube on the clutch switch and then reseated the tube. The end had stiffened and stretched and wasn't making a good seal. Also, if the car has a manual trans, try pulling the clutch pedal towards you (left foot under the pedal) to see if the cruise engages - if yes, it indicates a worn or out of adjustment clutch cruise switch (or clutch pedal not returning fully). Check all the cruise vacuum lines for small holes/slits/leaks.

Zack
1980 245DL M46 287k
1988 745T+ M46 226k






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