Cruise wont set

[BMeier]

I took off onto interstate today and the cruise would not set. I could turn it on and the cuise icon comes on the dash, but it would not set. I tried hitting all the buttons to see if I could get a result. I checked fuses, and there are no fault codes, I disconncted the batteries and hooked them back up and it still wont work. Any one have a cruise switch fail?

 

[Motorhead]

Check your brake light switch adjustment.

 

[Hoefler]

Check your brake light switch adjustment.

I would second that.

 

[CPittman]

BMeier - what year is your truck? If it is an '03 - '04 or so it could be the vacuum pump on the passenger side fender well. These years used a small pump and some small (1/8"?) hard plastic line for the cruise control.



My truck had a small hole worn through the plastic line which was easily fixed by cutting through the line w/ a pocket knife and slipping a piece of small fuel line over as a patch. Has worked ever since.



So, check your plastic lines for a place where it has rubbed through.

 

[BMeier]

Yeah, my truck is an 03', I checked the brake light switch and found no problems, but I did check the plastic line and it had rubbed through against the control module by the vacuum pump, I wrapped with electrical tape and the cruise worked. Is there a way to wire the cruise control switches to run the engine idle up like the newer ones?

 

[CPittman]

The dealer flashed my '04 to enable the high idle with the cruise controls. Next time you're in have them flash it for you.



Barring that, I think the Smarty can enable high idle too. I don't know from experience but I think I remember seeing that somewhere.

 

[Bob Wagner]

The early 2003 trucks do not have the circuit to enable the high idle. Chrysler added it to the 03. 5 and up trucks

 

[opjohnny]

This is why I love the TDR!



John

 

[BMeier]

I agree, its definetly worth every penny!