Transmission Temperature Sensor

[dolfanatic1399]

I have had my truck for over 2 years now and have had very few problems to this point. Now granted, I only have 15000 miles, so its still not really broke in yet.
I pulled out of my drive the other day on a cold December morning ( 0 degrees) and only got about 1/4 mile down the road and the trans downshifted to 3rd and stayed there. I shut the truck off and started it back up again to see if that would cure it but no luck. So, I limped it into town in 3rd gear to my dealer.
It was determined that the trans temp sensor had failed. Third gear is a default when the sensor fails. They replaced the sensor and I was good to go, or so I thought.
Last night, same scenario, exact same place from home and almost the same temp. It downshifted to 3rd and the check engine light came on. I turned around and parked it in the garage for the night.
I was wondering if anyone out there has had any similar issues like this. I have an appointment in the morning to have it looked at again. I would like to share with my dealer any experiences that any of our members have had.



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[MeanTangerine]

Same thing happened to me yesterday. About 15 degrees outside when it happened. Shifted into third and stayed there. Went back home and put on the code scanner, trans temp sensor circuit malfunction. Both the digital and analog trams temp gauges were non functional. Put factory tune back into PCM figuring it was going to the dealer today. Drove fine all last night and to work today. It's been very cold the last few days, 0-10F.

 

[srs]

Mine just had a similar issue today. It was not stuck in 3rd, but hard shifting through gears, and stalling. Needle gauge stopped working and digital readout read 34 degrees. Took it to the dealer, and there it sits waiting for the trans guy in the am. They read the codes and said it is throwing several trans codes and the trans temp is sayin -64.

 

[shiza40]

Y'all might want to check out this thread as well:

http://www.fordraptorforum.com/f183/tsb-13-6-8-transmission-26055/

I just went through this. The trans would stick in different gears, gauges would do weird stuff, etc. Trans guy at the dealer was ready to start throwing parts at it until I strongly suggested he consider this TSB. He did it and everything has been fine.

---------- Post added at 08:27 PM ---------- Previous post was at 08:26 PM ----------

Actual TSB can be seen here:

http://cdn.lrsstatic.com/downloads/tsb05-14/tsb13-06-08.pdf

 

[Ramrodthrusterpuppy]

I had a similar issue to the OP, was traced to a faulty shift solenoid.

*Edit - just read the TSB, exactly my issue although the dealer replaced both the lead frame and solenoid. If only they could properly diagnose the shorting defroster/shattering rear window issue!

 

[srs]

Yeah, I was reading through that TSB but it definately sounds different than my issue. I don't start out in 5th at all. I think it is the same issue that Meantangerine is having, trans temp curcuit malfunction.

I'm going to make sure the tech knows about and checks for the TSB mentioned though.

 

[srs]

Truck back today and the repair was the TSB mentioned. Apparently it can cause different issues than mentioned in the TSB and doesn't necessarily mean it is stuck in 5th.