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#1
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77 300D Cruise Control
Anyone have any experience with the cruise control on the early W123, can on left front wheel well? Think mine has a bad diaphram, any help, thoughts?
Ron |
#2
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I went through mine a few months back - tested everything and it turned out to be the amplifier. The 'can' should hold a vacuum - pull about 15-20 psi with a mighty vac and see if it holds - you should be able to see it pull and hold the throttle open thru the cruise control cable. If I remember right I had to run 12 volts to the connector - from the battery - to turn the cruise on, and then I pulled the vacuum. It should hold. You can also undo the screws and take a peek at the rubber diaphram - not hard to get to.
Ryan
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RG Newell 1984 300D 1972 250 1986 560SL 1991 300CE |
#3
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Ryan thx
Ron |
#4
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123 and 107 and 124 and and.....are notorious for failed CRUISE CONTROL......If unless you have big pockets, live without it!
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#5
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on my 123 the cruise works fine until you roll the window down. then it kicks it out of cruise. What's the deal?
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1980 300d on veggie |
#6
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Quote:
![]() ![]() Do these vac. cannister type have a cruise amp? It appears similar to the style on my '79 Chevy PU.
__________________
Jimmy L. '05 Acura TL 6MT ![]() 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" ![]() '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#7
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My cruise works great - I bought a rebuilt amplifier (which I have discovered is usually the problem) from a company in Georgia for a reasonable price and it has worked fine since - link below.
http://www.benz-store.com/index.htm Ryan
__________________
RG Newell 1984 300D 1972 250 1986 560SL 1991 300CE |
#8
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Quote:
__________________
Jimmy L. '05 Acura TL 6MT ![]() 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" ![]() '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
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