My '88 300CE cruise control is constantly hunting for the set speed. It's as though there is a short in the system or something, faster then slower at a very rapid pace. Any ideas?
Also is it a big deal removing the drivers door panel to replace a broken door check?
Thanks

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'88 MB 300CE 185K

Is repairing/replacing a broken cruise control difficult? I seem to see that mentioned a lot on the forum. Are MB cruise controls more finicky than those used by other auto manufacturers?

I have a friend whose cruise control is not working (W126). It's not a big issue, but it got me thinking about it. I use mine a lot.

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" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

Does it surge? If so, I have the same issue. I'm waiting for a cool weekend day to start hunting this one down. I spoke with my local dealer about it, and they seemed to think replacing the vacuum lines would probably sort it.

Speaking of this, I had rented a 2006 Impala LT over the weekend, as I had to go on a trip and did not want to take my car. I was very disappointed with the cruise control on this car. I had set it on 72 mph, but it was between 70-75 at times. Very frustrating. Something I would not expect for a 2006 car, especially since GM had "perfected" the cruise control system on the 70s and 80s cars. I had a 72' Buick Electra a few years ago and whatever speed I set the cruise on, it would say right there.

Other than that, the Impala was a nice car, but my mother and aunt kept complaining of the seats. One was complaining that the seats were not soft enough and one was complaining of the rear head rests would not let her lay her head back, as they are "fixed" to the seatbacks. Oh well, can't please everyone. Probably get a Ford Five-Hundred next time, to see how it compares, or better yet, a Cadillac DTS.

John Berry said: My '88 300CE cruise control is constantly hunting for the set speed. It's as though there is a short in the system or something, faster then slower at a very rapid pace. Any ideas?
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Seems to me this usually is the cruise control amplifier. Solder connections come loose on the older models. Do a search and I know you'll find all the info you need to either re-solder it yourself or get the correct parts.

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1986 560 SEL (159K miles)

My 86 300E did the same thing and it was the amp. Follow Rockman59's advice.