Cruise Control Problem
#3
#4
Join Date: Jul 2007
Location: South Georgia/East Florida
Posts: 24,686
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Look underneath the battery for a loose, deteriorated, or leaking vacuum supply hose at the speed control servo. Battery acid drips on this hose and destroys it.
The Cruise Control uses a Vacuum Reservoir so if the hose is gone, or damaged the system will fail. The reservoir contains a one-way check valve to trap engine vacuum in the reservoir.
When engine vacuum drops, as in climbing a grade while driving, the reservoir supplies the vacuum needed to maintain proper speed contro. The vacuum reservoir cannot be repaired and must be replaced if faulty.
There was a TSB out on this, for 2nd gen Rams, but knowing Chrysler's rep for not solving problems over years and generations (can you say "C-Clip", "Transmission", "Crancked Dash"?) it's a good bet that could be your cruise control problems...
The Cruise Control uses a Vacuum Reservoir so if the hose is gone, or damaged the system will fail. The reservoir contains a one-way check valve to trap engine vacuum in the reservoir.
When engine vacuum drops, as in climbing a grade while driving, the reservoir supplies the vacuum needed to maintain proper speed contro. The vacuum reservoir cannot be repaired and must be replaced if faulty.
There was a TSB out on this, for 2nd gen Rams, but knowing Chrysler's rep for not solving problems over years and generations (can you say "C-Clip", "Transmission", "Crancked Dash"?) it's a good bet that could be your cruise control problems...
#6
#7
The reason I ask that is when I put my 33x12.50's x17's on my truck I went to the dealer and had them reset my speedo. They said they didn't have that exact size in there programmer but their "guy" suggested they reset it as a 20" wheel. I forget the exact tire size. When they did that my cruize would cut off at 65. I went back and had them to reset the tire size to the b***est 17 they had in the programmer and now it works fine. My speedo if only off 1mph now.
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