Cruise Control Problem
Record Breaker
Joined: Jan 2007
Posts: 2,451
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From: CA
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...
Record Breaker
Joined: Apr 2008
Posts: 1,524
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From: REDNECK, USA
I guess I didn't explain myself good enough. They went to a CERTAIN TIRE SIZE on a 20" rim to match the dia of the tires I had put on the truck. They didn't have the exact size of my tires in their programmer. I can't remember the TIRE SIZE they used, but what ever it was it was a 20" rim size. When they did that my cruise was kicking out at 65 mph. I went back and got them to program it to the largest tire size they had on a 17" rim (which is what's on my truck) my cruise went back to working correctly. I hope that is clear because I wouldn't want anyone to look like a DUMBASS!
Professional
Joined: Sep 2008
Posts: 228
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From: Utah
did you change your tire size?? if you did you need to program in the new tire size
I should have read all the posts first
we at the dealerships are limited as to very few tire size's to program it's a fed thing
I should have read all the posts first
we at the dealerships are limited as to very few tire size's to program it's a fed thing
Last edited by eaglestorm; Sep 8, 2008 at 10:23 PM.
Record Breaker
Joined: Apr 2008
Posts: 1,524
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From: REDNECK, USA
Any other dealerships in your area you can call? That seems kind of high to me. I know you can buy programmers that can do all kinds of other stuff including reset your speedo, but they are high to.
Professional
Joined: Sep 2008
Posts: 228
Likes: 0
From: Utah
I think 05 can be set to other with the drb3 it's 06 that uses star scan that you are limited on size I doubt a tire store can do it unless they have a drb3 but when you dont have the scanner you have to pay what the guy with the scanner wants.
you have to know the tire rev's gear ratio and ring size to program odd size I would think .5 shop time is fair thats what I would charge in my shop
you have to know the tire rev's gear ratio and ring size to program odd size I would think .5 shop time is fair thats what I would charge in my shop