Hello everyone.
Need some help, but let me give you a breif history. Last June(2011), I had the code of P1763 pop up, so I replaced the transducer, solenoid and filter in the the transmission pan. Well, everything was okay until about two weeks ago. Same code popped up, did the repair again(got them under warranty for Dodge dealership). A week later, same codes. What it does when the code pops up is that it seems like it starts off in a higher gear. Or if I am driving at around 45, it will drop a gear. It only seems to do this after driving it for about 45 minutes, when it gets nice and warm. I took it to the dealer and they said I need a new transmission, yeah, I know, what a joke they are! It does perfectly fine until you hit about 35-45 minutes worth of driving. Any help would be extremely appreciated...

 

If you haven't already, get rid of the check valve in the cooler line that goes to the lower fitting on the radiator. Its right where the hard line hits the soft line. (flare nut bolting it together.) Either replace the entire line with a piece of hose rated for trans fluid, drill out the check ball, and reinstall the hose, or buy some fittings, and make up your own hose.... (DIY in faq section for most of these options.)

Sounds like the trans is getting hot, and going into limp mode. (disable O/D, and starts off in second gear.)

 

If the governor solenoid keeps getting clogged, I'd say the TC is falling apart or the bands are all done.

 

Delete check valve....and see what condition the fluid is. Is it pink or is it dark? Does it smell burned?

Maybe drop the pan and see what is in the bottome of it. Install a drain plug at this point as well...you'll be glad you did later.

 

The fluid is good, no shavings. We just dropped the pan two weeks ago to replace the solenoid and transducer. I will check on that check valve this weekend. Thanks for all your replies.

 

+1 if the check valve was causing overheating you would see the od light come on prior to your problems if this was the case....

You really answered the question when you said replacing the solenoid and sensor took care of it for a short period of time...I did the same thing and had the same results. I got about 4,000 miles out of it over almost 3 years..before my TC spread shrapnel all through my tranny....
Sorry to tell you but I think its time for a TC replacement and a rebuild at this point... when things are so worn there excess metal shavings being produced it will keep plugging the things like the valvebody and solenoid up causing failure and unreliable shifting...How did the screen look on the solenoid? plugged?

How many miles on the transmission? what type of fluid did you use? Also you have to check the level in nuetral not park...

at around 45mph it should be shifting between drive and overdrive.... if you have inclines or weight or bigger tires without changing the diff gears the tranny will shift in and out of overdrive a lot around that speed .... this is one of the reasons bigger tires damage trannys without proper gearing to compensate... I dont know if you even have bigger tires but I'm just sharing what I know about possible causes..

 

DTC 1793 is triggered when 4.9 volts or more is seen by the ecm in the governor sensor circuit for more than 8 seconds...the first thing i would do is check some ground circuits first, if your sure your trans is clean and no debri scattered through system....One test is to unplug the upstream and downstream oxygen sensors,they usually share a common ground....If trans code goes away,then plug sensors back up one at a time to see which Sensor is at fault....are any other codes involved?....The next probable cause is actually high line pressure, if the line pressure to the governor exceeds 90LBS ,this code can be triggered....Another cause I have seen is a faulty alternator causing weird voltage signals.....


Brian

 

ok but he stated hes getting 1763... or is that what you meant to type?
FYI I had the same error along with two others when my TC failed.... in my case I had "scattered debris" in the form of junks of aluminum shavings floating around getting hung up in the valve body.

 

Yes, 1763 is what I meant to type......Sorry for any confusion..

 

Okay guys, even more stumped now. This weekend, my brother and I checked the hose and check valve and it worked perfectly. The ball moved easily. Then we checked the O2 sensors like bjr1a had suggested. Everything was fine there. Then we drained the fluid and dropped the pan. We checked the sensors and all the connections. Everything looked good. Put the pan back in and checked a lot of wiring. There was a loose connection on the connector for a harness going into the top of the trans. We cleaned it all up and connected it back, test drove it, and a half hour later, same problem. I am at a loss here guys. Can't really afford to take to trans shop that I know will just say rebuild time.