![]() Ive read that when people get the P0700 then they need to read the TCM codes.how specifically is that done? My scanner got me the P0750, so should I imagine that it would have got any other trans codes? Or are some kept in the TCM only and NOT passed to the regular OBD port? And if so how do you get those? My thinking then was the already old neglected fluid burned worse than it was and so ultimatley was a pressure issue.Īlso there is P0700 which is general TCM code, pretty much shows up whenever there is a TCM fault, like the P0750 ID imagine. Still in any case, this whole issue with 1st gear never cropped up until I had that overheat event a week ago. (Im an industrial mechanic/electrcian by trade) Id think that a sensor would more likely go intermittant than a solenoid which would tend to short or burn open. I wonder if a bad pressure sensor could mess things up in this way (intermittantly) And there is no seperate solenoid on the 545rfe, so that would mean replacing the pack perhaps. Makes sense since I am having trouble with 1st gear. So, I have P0750 which is shift solenoid 1 fault. Bad thing is I never know when a new one crops up! Yeah I know. Every other day of the two years in between I joyfully drive around with the engine light on. Chronic evap system code, I dont care about it until emission inspection time, and I have a work around when that happens. I did not think to do this sooner because I normally drive with the CEL on. (been doing that for months) 1st worked the whole 20 miles and on my home street, I hammered it good and it pulled well, no shuddering.not that 1st ever shuddered, its more like if you hammer it at low speed and its in 2nd because 1st wasnt working, then it complained if that makes sense. The drive home this morning? No trouble except once I got that clunk letting off the gas. If one or more Pressure Switch Sense Circuit faults have been encountered (P0846, P0871, P0876, P0988), but the condition is not present at this time (switch change of state can be observed at the appropriate time with the DRBIII while driving the vehicle and/or the number of Good Trips is greater than zero), remove the valve body from the transmission and inspect all the valve body check balls for cut/chipped/damaged condition prior to replacing the solenoid pack. Replacement of the solenoid pack will not resolve the concern if a damaged check ball was the root cause of the fault. Maybe this information below would help in your thoughts?ĭamaged check balls in the valve body may result in intermittent leakage that is sufficient to change the pressure switch state resulting in a pressure switch sense circuit fault when the solenoid pack is in working order. They had issues though with it hunting in and out of overdrive. My parents have an 01 Dakota with this powertrain in it and this was done recently. Click to expand.You would have the 545RFE which does only have that solenoid block that you are referencing. ![]()
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