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cruise control
#760951 May 16th 2020 2:17 pm
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quadman Offline OP
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I have a 1985 Dodge B250 with a 318 2bbl. It came with factory cruise control. The problem I am having is when I set the cruise at 60 I have to speed up to 70 to set it at 60. Any idea to the problem? Thanks in advance.

Re: cruise control
quadman #760952 May 16th 2020 2:42 pm
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journeyman
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There is an adjustment for that on the servo. There is a very tiny allen headed screw right next to the two wire connector that controls the lag (speed sensitivity) for the unit. I don't have a FSM in front of me but that will tell you what direction to turn it to tighten that up. I do remember that it is very sensitive, recommended to only turn it 1/8 of a turn at a time!

Re: cruise control
quadman #760953 May 16th 2020 2:42 pm
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old hand
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Hi Jim,

The CC has a vacuum motor that controls the throttle cable to the carb. Maybe a vacuum leak, bad diaphram, or a cable linkage, or set linkage adjusted? The CC unit uses vacuum to control the linkage once set. You should check the vacuum connections and cables, linkages to start with. My CC is nonop, my set switch on mine is bad. Good Wrenching!

Re: cruise control
Wedgy #760956 May 16th 2020 3:13 pm
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Thanks Wedgy. I'll check it out. How's things in Lubbock?

Re: cruise control
captainchrysler #760957 May 16th 2020 3:15 pm
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Thanks. I'll check it out.

Re: cruise control
quadman #761589 May 29th 2020 7:20 pm
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quadman Offline OP
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Thanks captainchrysler. I adjusted the allen head screw and that fixed the problem.


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