Let me give a little background, and then hoping you guys can point me in the right direction. I have a 2004 Ram 3500 crew cab slt, 5.9L vin C. I have a smarty touch purchased from dudes diesel performance, it is currently unhooked and the truck was reprogrammed to stock before removal by the smarty.
The problem: truck has a funny idle and shuts off at idle, particularly when I first start it up in the morning. I can throw it in high idle and it’ll somewhat smooth out after a few minutes. As soon as I go to put it in gear it tries to die.
What I have found: the TPS has a voltage of 0.44v at idle and with the key on engine off. The voltage rolls up to 1.0 volts as you depress the pedal. The fan clutch is brand new, the original code I had was PO483 and I was told it was my fan clutch. However, at 760 rpm(idle) the fan is turning 220 rpm according to my scanner (snap-on souls ultra). The engine coolant temp sensor will read ~185-190 and when you unplug it it goes +/- 4 degrees or so of the reading with the ect unplugged. All power and ground circuits for the ecm have been verified correct.
The mechanic helping me is a retired mechanic, he was also an electronics engineer for Disney. He believes the problem could be in my ecm and that a reflash may help, and if not that, a whole new ecm. Here are my questions, with the smarty, should it not have updated the ecm when it was programmed? And also will I be able to use the smarty after the fact if a reflash or ecm is needed? Or will the smarty have to be reprogrammed?
Thanks for the input guys!
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