Question about 2004 Dodge Ram 3500 Truck

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The cruise control works fine when on level terrain; however, when I enter a slight up grade it shuts off and won't restart unless I turn off the key and wait a few minutes. Meanwhile, the check engine light is on and the code is P1740 (torque converter). The local Dodge dealer thought the problem might be associated with the after market PacBrake installed, but I took the truck to the PacBrake installer and they checked it out and found no problem. In fact, the cruise control did the same thing when the PacBrake was disconnected. When the problem first occurred there was a second code in the check engine light P0483. The PacBrake guy was able to erase that code and it hasn't come back. We're pretty sure the problem is with the cruise control or computer??

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  • gwsloss Jul 30, 2009

    Yes, very helpful. Thanks.

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HI. that P0483 is a Cooling Fan Rationality Check Malfunction. This is normally a CPU issue, and it signals issues with the actual integrity of the CPU as well. The cruise control module receives a signal from the CPU that control engine power and vehicle speed based on changes in road conditions and the engine load.It also Provides correct air and fuel mixture to engine for different driving conditions. The module(cruise) and CPU are suspect in my estimation. I recommend replacing the CC module and The CPU as well. this will fix this issue.

Due to the fact that the system has to be shutdown to be reset, leads me to this solution. it seems that both the Module and engine CPU are damaged. the additional components(servo/switch/power solenoid), all seems to be in good condition.

Posted on Jul 30, 2009

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