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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Hey guys I need help. I have a 5.9 swapped in my 98 TJ. I drove it about 1000 miles with a 5.2 PCM with no real problems once I started driving it. I recently got a5.9 PCM and drove it a few times, then a few days later it would not start. Here is what I have. I have 5V to the CKP CPS MAF and TPS from the primary wire. I also have 5V to all of the sensors from the PCM on the sensor wires on all of the same sensors. I had 2V coming from the VSS sensor with the supply wire disconnected from the PCM. I disconnected the transmission connector and the 2V goes away so I know there is a problem inside the transmission. I get fuel and 12V to coil when the key is turned on and 9.7V while cranking. I believe that I have a bad PCM. I temp installed my 5.2 PCM and it does the same things. Recent CKP replacement with a Mopar one. O2 sensors connected or disconnected has no effect on systoms. Any help will be appreciated!!!!
i read this story, didnt do it my self. after having the engine shout off again again. he found that the computer had a tab with a wire soldered to it. the tab was steel regular solder doesnt stick to steel very good. by using silver solder the trouble was gone hope that helps.
I cannot read through long stuff with no line spacing at my old age. I saw the first part of the post, and the last. But this could be an issue!
Hey, I admit to having needed to read it 3x to pick up on it. I'm certainly not saying it is a culprit as I've not had the need to check the voltage during cranking, but it just stands out like a sore thumb to me.
Of course, the root cause(s) could be indirectly related to this....given the context of this tech query.