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Old 08-26-2001, 10:27 PM
Join Date: Jul 2001
Location: Old Lyme, Connecticut
Posts: 3,596
Question Intermittent Cruise Control Operation, 1986 190E 2.3 5-Speed

A good buddy of mine has a 5-speed 190E from 1986 with 205,000 miles. It runs unbelievably strong still, and gets great mileage. He is experiencing some intermittent operation of the cruise control system. When he flips the stalk up to accelerate the car responds and accelerates. Some of the times when he lets it return to its normal position after reaching the desired speed, the unit fails to take over and control the car's speed. When this happens he can stop the car, shut it off and restart it, and then the cruise usually works. Is there a sensor or some feature of the system that is dirty or needs adjustment? Any clues would be appreciated. Thanks, Jim
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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Old 08-27-2001, 12:00 AM
Senior Member
Join Date: Apr 2001
Location: Beech Island, S.C.
Posts: 468
You need to have the cruise checked with a cruise control analyzer to be certain of the problem.
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Old 08-29-2001, 02:08 AM
Posts: n/a
Hey Jim. Or swap cruise control amplifiers with him and see if the problem goes with the amplifier or stays with the car. I have the same car as your friend, and its cruise control only sometimes works and sometimes when it is working it stops working. I want to get a new amplifier, because when I swapped my amplifier out with a friend's it worked and when I put mine back in it did not work. Don't try opening the can; there's nothing you can fix without a tester to tell what is going on, and some places that accept back the old unit with a core charge will not take it if it's been opened. Richard
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Old 08-29-2001, 05:04 AM
Shinji Shimizu
Posts: n/a
Pls see MBCA info.

Hi Jim,
Though I have been a ROM, I am a new (registered) here.
I think the following information is helpful for you.

I own two 190E 2.3-16Vs. One of them that I have owned more than 10 years had a same problem. I opened the amplifier and found a crack at solder joint. So I fixed it but it was not enough for my amplifier. A lot of electrolysis condensers are used on the board of amp. That kind of condensers are usually exhausted in 7 to 15 years depend on the environment.
I changed all the electrolysis condensers that cost only $15. I think you can purchase that stuff at Radio Shake or like that. (Ifm not sure.)
My amp was fixed in that way. I hope it would help you. Good luck!

Shinji Shimizu
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