2001 Ram 1500 tranny shift issues

Hi everyone,
I have a 2001 Dodge Ram 1500 SLT 4x4, 108,000KM, 5.2L with the 4-speed automatic tranny. A while back, I went through a total mess with the
dealership I bought it from (non-dodge), the problem was that it wouldn't stay in overdrive. They replaced the overdrive solenoids, the fluid and filter 3 (!) times, and then sent it to a tranny shop ... they cleaned the valve body, and replaced the TPS. Still not fixed, though better, probably due to replacing the TPS. Anyhow, it ended up at a 5-star chrysler dealer after they admitted they had no idea, and the 5-star dealer reprogrammed the TCM, problem solved. I know you're all thinking, that should have been the first step.
Ok, so even before the TCM was reprogrammed, sometimes it would take off sluggish, sometimes it would go sluggish, then make a soft bang, and take off normal. I thought the parking brake was stuck on. It turns out that it is not shifting in 1st gear! It does this almost all the time now. If I shift it manually, no problems. Any ideas what this may be? I just want enough information to not get screwed over again. To me, it sounds like a PCM/TCM issue, but I'm no tranny genius.
Thanks! Derek
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Its probably a fairly typical problem. The governor pressure sensor and the governor pressure transducer are not working correctly.
The first thing they should have done was check to see if the PCM had the codes set for this malfunction.
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Max

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Hey, thanks for the reply. Pressure makes sense, cause I just found out this morning if I give it over 1/2 to 3/4 throttle it will shift down to 1st ... now to convince these other guys. I followed your url devilbrad.com to the forums there, looks good ...
Thanks, Derek
Max Dodge wrote:

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btw, are these located inside the transmission, or on the outside? Are they easily replaced? I guess I *should* buy a manual :)
Thanks, Derek
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One last question (sorry for multiple posts), is the governor pressure transducer the same thing as what other people call a "governor pressure solenoid"?
Thanks, Derek
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No. The governor pressure transducer is also called a governor pressure sensor, but it's a different (though related) component to the solenoid. The solenoid regulates governor pressure, based on signals from the PCM (think of a valve on a faucet). The PCM senses governor pressure via the sensor/transducer (think of your hand under the faucet feeling the pressure). Your brain is like the PCM.
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Inside, on the valvebody. The FSM is worth far more than its asking price, buy one sooner than later.
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Hey Max,
Thanks so much ... I got it fixed up about a week ago, no problems at all now.
later,peace -Derek
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