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#1
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Cruise con. loses speed during trip
My '79 116 has the OEM vacuum diaphragm and amplifier setup for the cruise control. The amplifier and speed sensors are rebuilt / new. However, the cruise continues to lose several MPH on a ~ 20 mile highway drive. The speed just drifts down over the course of the 20 miles, prompting me to reset the speed higher.
If this is a vacuum problem, why would the amplifier not detect this lower speed and correct the problem? Or, as perhaps somewhere could explain, is this a symptom of a maladjusted amplifier? Thanks, -H |
#2
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99% of the time that issue is from the amplifier.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Thanks!
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#4
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I had the same problem on a 1992 124. The amp was bad.
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