Engine/Transmission (1998.5 - 2002) 2000 2500 auto will not shift above second gear - Corpus Christi, TX

[ketchumj]

Double post here, other one is in the 911 forum. I am desperate.



Looks like I need help from my friends at the TDR. As you can see from the title I am having some transmission trouble. The truck tried to do it yesterday, but when I shifted in and out of neutral it came back to life. Tonight, a totally different story. There I was going to church and the truck will not go faster than 25MPH and will shift down to 1st, but not out of 2nd.



Were should I start? the truck is in the driveway with the battery cables disconnected hoping that I can do the TPS reset.



I saw in an old post that it may be the pressure sensor for the transmission - if that is the case, can a mortal man do this in his driveway, or do I need to take it to the shop.



Thanks for the help



Jän

 

[Bob Wagner]

it sound like your truck is in "limp mode" it could be a solenoid or transducer problem.



you can do a search on here and use limp mode as your search.



hope this helps

 

[GWall]

do you have the code 0720? if so then thats what just happened to me. it was a output shaft speed sensor. i went to autozone and bought one for $22. took 30 seconds to change.

Greg

 

[ketchumj]

No codes. Did the APPS reset, and the truck will now shift out of 2nd - now to find a part number and good price for one.

 

[rono]

My son has a '02 and his took forever to shift out of first, and never shifted out of second. He was about 300 miles away from me close to Houston. I talked to a trans shop I have good relations with and they told me that over 90% of the time when they encounter that problem they change the governor pressure solinoid(sp). I told my son, he got one from a Dodge dealer $112 +/- replaced it himself along with a new filter and fluid and that fixed it. It is located on the valve body, you can see it when you remove the pan. I don't know if the transmission are close to the same but it sounds kinda of like the same problem

Ron

 

[ketchumj]

Well, the problem is back. I tried to go to work this morning and stuck in Limp Mode again. I am going to pull the batteries, check the grounds and do the APPS again before I pull the pan.



Does Autozone or Napa carry the gov press solenoid?

 

[EWatters]

Just fixed some thing like this. Mine wouldnt shift out of 1st till around 2500 rpm, or it started off in 2nd. Ended up be the soleniod.

 

[JR2]

I don't belive you will find the parts anywhere but the dealer... a good transmission shop that works on lots of Dodges might have them.



I have the part numbers somewhere and I am looking, you can try searching the TDR for them too. .

 

[ketchumj]

So, I tried to reset the apps with the pedal after work - didn't work.



Next, I reset the APPS in Accordance with DTT website - match pin 23 with what is on the back of the APSS - didn't work.



Took batteries to Autozone to get tested, 11 months old - they are good to go -



So, Back to the beginning, with some troubleshooting completed. All in favor of dropping the transmission pan say Aye!



While I have the pan off, I guess I should change the sol, the press sw, and the filter?

 

[ketchumj]

It is Fixed!!!!



Turned out the Output Speed Sensor had crapped out - thanks to Mike at Hotroddiesels.com and Bill at DTT there help saved me a lot of money.