mechrisme

I have a 2001 Dodge, came with manual everything and I missed cruise control from my previous truck. I read online and heard the truck is wired up for it, you just need to parts. So I got a whole steering column from a 98 half ton so I swapped the clock spring, steering wheel and cruise control buttons. After making alot of calls I found the servo off a 2001? dodge diesel that caught on fire and I hooked everything up and I hooked the vacuum line off the servo off the T-fitting on the firewall, did I do something wrong since its doesnt seem to work, no light on the dash too

BlueRam01

A WAG but I'd bet the feature has to be activated in the computer. I always thought the cruise control was electronic (using the fly-by-wire throttle) by the way the pedal doesn't move when its activated.
Good luck. Hope it works out.

mechrisme

well I read its powered through the break pedal and vacuum controlled, I'm gonna check the voltage on it next week

Busboy

The brake lite sw should have three sets of contacts. One for the brake lites, one to allow the cruise to be engaged and one to disengage the cruise. It could be that your truck only has one set as it didn't come with cruise.

mechrisme

I checked the brake switch and it has 3 set s of contacts, I'm gonna look up the diagrams on AllData and work on it next week

camelracer

If you have and auto trans there is a vacuum speed control servo controlled by the PCM.
Manual trans trucks don't use the vacuum servo. They are controlled directly by the PCM.

mechrisme

I have an auto, I also dont have my factory PCM on my truck, its off a later 2001, I could swap them back out and see if that helps

torquefan

If I remember right, as soon as the PCM sees the first cruise control input, it will recognize that the truck now has cruise. I would make sure the brake light switch has all its wires in the connector.

dguru

Turn the key on and switch the cruise on and off. You should be able to hear clicking at the servo. If you hear clicking, the issue is in the brake lamp circuit.

I am not sure if you can use 98 switches on a 01. I don't have the 01 manual handy. I do know that the 94 switch is different than a 98.

kreynolds

According to my service manual, trucks with a diesel engine and a manual transmission do not have servos. Cruise is controlled by the ECM only. If I find any more useful info I'll post it.

kreynolds

Forget that last post. I see now that you have an auto

mechrisme

Well the steering wheels are the same execpt it being cut you for the buttons to mount on the side, I know the older dodges have the control on the bottem of the airbag, the clockspring hooked up to the wiring that was already there, I checked the brake switch and there are 3 contacts in the switch itself, I have a computer in my truck from a later 01, idk if it had cruise control or not but I'm not sure if it has to be setup in the computer, at the dealer you can by an aftermarlet cruise control system for lik 220 bucks but not anymore but I'm unsure exactly what it comes with

mechrisme

I meant its a factory cruise control unit you ccan get from the dealer