2001 1500 P1740

[riverat440]

Hey, I have a 2001 Ram 1500 and the MIL came on last week with a code of P1740. TCC Solenoid or Overdrive Solenoid Performance. Upon the advice of a friend I changed the TCC and overdrive solenoid pack, cleared the light and within a day the light was back on. What else in that system could be causing this problem? Does the TPS play any part in a performance problem in this circut? Has anyone experienced anything with this? Thanks, Rick

[angus10]

Did you relace the solenoid AND the sensor?

[riverat440]

Just the solenoids, I didn't see anything of a sensor. What sensor is it and where? Thanks

[angus10]

The sensor is right next to the solenoid. The one in the pan that is.

[riverat440]

No I don't think so. Making things up as you go doesn't do anybody any good. There are 2 solenoids together, one for the TCC and one for the overdrive. Upon further investigation I found a TSB on this issue which effects 2000-2001 46RE transmissions found in vans, Dakotas, trucks, and Durangos. Bulletin# 21-11-00 deals directly with DTC P1740 TCC or OD solenoid performance. The issue may be caused by an intermittent and momentary TCC disengagement condition. The transmission valve body pressure boost valve cover plate has been revised with a larger orifice hole to address this condition. The revised cover plate has a 1.75mm/.069" hole versus a 1.22mm/.048" hole in the original. Part number for the new plate is 04617012. According to the bulletin a TCC stall test with a DRBIII should be performed prior to doing the change. The DRBIII must be operating at release level 50.4 MDS2 system CIS CD2067or higher, available week of 10/02/2000 in order to perform the revised test. If this test stalls the engine the cover plate should be changed, if not there are other issues which should be addressed. These include worn input shaft seals, converter hub, input shaft, pump rotor, or a missing check ball for the pump lockup.
In any case it is about a 1 1/2 hour job and is reimbursable under warranty. Seems to me if the light is on and resetting it only lasts a day or 2 it is time to drill the orifice out. Maybe I was a little quick to post a question but I was a little frustrated after changing the solenoids only to find the light back on the next day. I hope this helps someone else out.

[angus10]

Sorry but there is one solenoid and one sensor right next to each other next to the valve body. Maybe you are calling them both solenoids? When one is a sensor and the other a solenoid. It's actually called the Gov. Pressure Sensor.