streetsmoker

Hey guys. I just noticed something my truck just started doing tonight. For a while, My tranny has had a slight shuttle shift during normal throttle only, between 2-3 where it would raise 150rpm's in 2nd gear before shifting into 3rd.Just tonight while towing my Jeep, it turned into more of a slide. Is this slippage? It doesn't seem to do it all the time, only at random. I was always told that a slipping tranny will do it all the time and continually get worse.

Until tonight, if I got into the throttle any heavier than normal, the tranny shifted fine&firm. So I unhooked the trailer, and did some testing unloaded. It doesn't do the slide into 3rd at will, only randomly. However, now when I roll into the throttle real good 2nd gear seems almost transparent cause it shifts through it real quick.

So is this some electrical sensor problem or am I going to need a new tranny?

Geico266

Don't know much about 3rd gen. You might want to call Dave Georend and ask him. I know of no one else that knows Dodge transmissions better than he does. That's about all he does is Dodge trannys.

Oilguy

I am having the same exact problem... I am getting pretty worried.
Anyone had this problem and gotten it fixed? What did it take? New Tranny? TC and Tbody?
I had the bands adjusted and it helped a little but it is getting bad again.

Oilguy

streetsmoker

Well, I have a performance converter and valvebody, and if the tranny did this before it was installed, I never noticed it until the pressures were raised and firmed up afterwards. I don't think it's the forward drum clutches slipping, cause a lot of people have posted that if that was the problem, you would press the throttle and get high revs and slow going. So I'm thinking(and hopeing) it's
probly a sticking selinoid or, someone mentioned throttle valve or governor pressure sensor. I will know for sure on monday when I take it to the tranny shop that did the converter and VB install for me back in Oct. I will definately let you know. If it is something major, I will be getting a full Stage3 rebuild with billet flexplate.

HOJO

My tranny did some funky shifting intermittantly for some period of time. It got worse and finally it would not upshift until 2400 rpms, still intermittantly.

Took the longest time (perhaps a year) to pinpoint that this happened only after being placed in reverse. I was then able give this info to the local dealer who then saw the problem and replaced the valve body.

It has never shifted so smooth as it does now.

I don't know if this helps? We have the same year truck. Perhaps there was a bad run of valve bodies?

PS
Took to an out of town dealer @ 35500 miles who could not find the problem.
My dealer repaired under warranty @45000 miles.

DmaxEter

It was the injectors

streetsmoker

Yeah, that's it! It must be the injectors I'll rub to the phone, and make sure they take a look at it No, just kidding. I took the truck into the shop today, and we have narrowed the problem down to one or more of the following 3 problems, and they will be exactly sure tomorrow.

1.Servo leak or spring worn out/broke
2.Governor pressure sensor
3.Throttle selinoid valve.

Thankfully, all are relatively cheap and easy to fix. In fact, it took the shop longer to diagnose the problem than it will to fix it

DmaxEter

Youre on borrowed time with that trans Streetsmoker. Just a matter of time before that thing gives it up for good. You need to get a bad trans built to go with the rest of the truck. Im not saying that that trans aint good, man it shifts great and pulls hard, but being the stock input shaft and clutches, its just a matter of time.

streetsmoker

Yea, it's doing good now, and when it gives up the ghost, I'll drop the money into the tranny to bullet proof it. As far as upgrading the input shafts, every tranny shop I talked to said it depends on what tq conv. I have (multi disc w/billet cover in particular) and if i do full throttle lock to lock shifts. I don't/can't do either, and the fact I have a 2wd they admitted they have never seen an input shaft break on a 2wd w/o doing that type of driving. Now the flexplate is a different story. That is something I plan on taking care of sooner rather than later.

streetsmoker

Well, the saga continues. We replaced the throttle seliniod valve, governor pressure sensor, put in stiffer 1/2 and 2/3 shift servo springs. The tranny still flares in the 2-3 shift although, we did fix the sacking effect of the quick shifts. There is now only 1 of the following problems: There is either a problem in the throttle valve system, or the is leakage past the o-rings in the servo preventing pressure biuld-up.

Oilguy

Well I took my truck to the dealer and had their Tranny guy drive the truck after giving me the "48re is a very strong and dependable tranny,, Blah Blah Blah"
He pulled out of the lot and stepped on it thinking it was going to step through the gears and it flared so bad that he thought the tranny just let go and got off the throttle!
Now I am taking it in Mon and hoping they don't keep it for more than 2 days (yeah Right) and Hopefully they have their loaner truck available (yeah right!) and everything will go perfect (I will be holding my breath)
I was kinda surprized that the truck acted up when I took it in... Taking it to a mechanic and mentioning the word "Truck Forum" usually hides the problem and make me look crazy.
We'll see!
Oilguy

milehigh.o.

I just got mine back from the dealer, it was doing the same thing and I had the EDGE J/A so I was worried about warranty. I took it in and it was a solenoid in the transmission and got a fluid change with the new part. I picked it up last night and this runs like a champ now. If you need to know the exact part that was replaced I can get it for you.

Mcmopar

Streetsmoker---keep us posted.

streetsmoker

I just got back from a test drive and are you ready? Can you stand the excitement and anticipation?

It's FIXED!!!!

The problem wound up being a bind up in the throttle valve/ spring inside the the VB. So now I know why some stock trannys have the same problem, cause if the valve shute is not boored precise and smooth, you can get a stuck valve, then when you hammer the throttle, the line pressure is able to overcome the resistance and the tranny shifts properly.

I hope this helps anyone who may have a problem like this when they take it in to get service done.

roc155

Mine Shifts Real Weird Between Gears If The Rpm Is Around 1500 - 1700 Or So. Feels Like It Goes Back And Forth Could This Be The Same Type Of Problem? When You Step On It The Tranny Shifts Fine.