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sprinkles08, Chrysler/Dodge/Jeep master tech
Category: Dodge
Satisfied Customers: 22821
Experience:  ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans and Hybrid Specialist
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2500 diesel slt: Cruise control works short time then

Customer Question

Cruise control works for a short time then shuts down. Won't work again until you shut engine off
Submitted: 2 years ago.
Category: Dodge
Expert:  sprinkles08 replied 2 years ago.
Hello and welcome to JustAnswer!
You could have quite a few things going on. It's possible that you could have a vacuum pump issue but it's more likely that the engine controller is seeing an issue that will prevent proper cruise operation and it's being disabled.
There are many things that will prohibit cruise. It could be a vehicle speed signal related problem, an issue with the accelerator pedal position sensor, the cruise switches or circuit, an issue with the MAP, cam or crank sensor signals, or a trans related problem can prevent cruise from working.
The next step will be to see if any fault codes are setting in the ECM. If cruise is being purposely inhibited then there should be a fault code set that will need to be used as a starting point for diagnosis.