No 2nd or O/D all of a sudden. '05 48RE

[Jeep Hauler]

I had this posted on another forum and only received one response. Just trying to cover my bases here, and I need to get this truck back on the road ASAP. Thanks for your help!Oo. And I did do a search first with no luck.



Truck is sticks in 1st gear... ... ;.



Then shifts to drive and feels like it is skipping 2nd all together. I get stuck in 1st only until the motor is screaming red line for a few seconds and then shifts to 3rd. ***UPDATE: Truck does not shift to 2nd or O/D. When it is in 3rd, and I manually shift to 2nd, it feels like it is just goes to N. ***



This just started yesterday, at a regular stop. This truck has never showed any of the signs of the transmission doing anything wierd, so this is a out of the blue instant issue. It has always been a really strong truck. The only thing I did out of the ordinary was held the brake to build boost for 2 seconds as I was on a pretty steep hill at a complete stop and it has always seemed to help the truck to not struggle as much getting up a hill from a stop. One other issue I had that MAY have an effect, was I noticed my brake lights stayed on for a minute or so after I got out of thew truck. But that was a week ago, and have not had any other issues with that since. I did make sure to pull up on the pedal when this started happening to eliminate the T/C not locking because the ECM thought the brakes were on (if that makes sense to you).



No matter what gear I start out in (D-1st) and doesen't matter if the T/H mode is on or off, the truck starts and stays in 1st gear until about 200 yards, screaming redline and getting up to almost 40 mph then it will shift to 3rd. Id id seem that when this first happened, when I did hammer down on it, it would shift to 2nd & O/D, but now it does'nt matter. Just 1st & 3rd is all i have.



Some other symptoms are it will not shift down to 2nd when I manually move the lever & release the throttle, it does however act like it goes into N, the RPMs go into idle (750) then only shifts to 3rd and spikes the RPM's back up when I push back down on the throttle.



Also when I manually shift into 1st & release the throttle, it seems like it goes into N and the RPMS go to an idle until I am about 2 MPH at the stop, and then it feels like it kicks into first.



Fluid (changed 40xxx ago) & level are fine, I had a new ECM installed in March, THIS IS NOT THE TRUCK IN MY SIG. This is my other truck, it is a '05 3500 4x4 with 140xxx miles, NO TUNER OR MODS, truck weighs 10,400# with all my tools and parts in it. The Gov psi sol & Gov psi transducer seem to address a truck stuck in second gear. What should I be honing in on for these symptons? Would a loose band be all of a sudden like I described?



Thanks for your ASAP help folks (my job depends on this truck running)!



Danny

__________________

 

[cerberusiam]

Drop the pan and look for the front band strut laying in the pan or on top of the VB.



There are other things that could cause what sounds like a total loss of 2nd gear but the the band strut is a likely culprit.



Need to investigate, good luck.

 

[Jeep Hauler]

Update: Pulled the pan off

No metal, just a thin smear of sludge on magnet. I took my finger and pulled down on the band sprags or (levers). I could move them down off the piston about 1/2 ". Don't know if this is normal or if it is frivilous info, but I would imagine those need to me more snug against the piston?? I am headed now into town to get some fluid, filter and in-lb wrench.

 

[Jeep Hauler]

Fixed!!!!

Oo.

When I went to adjust the bands, I knew right away that was not the problem. They screwed in almost the backed off amount from the original adjustment from the factory, and when I put the in-lb wrench on them, it did not take too much (1/8 turn) to set at the tq specifications.



So, a quick trip to New Mexico (yes, our dealer here in Durango, Colorado rarely have any parts in stock), and I picked up a new govenor solonoid and a new pressure transducer. Installed these and refilled the trans (also installed a drain plug in the stock pan while I was at it) took it for a test drive and it shifts great! I did notice it shifts smoother and not as hard as it used too also.



So my conclusions are if nothing is physically broken (bands for example), and an inspection shows the rest of internals look good and fluid is clean, then there is a good chance that these problems are an electrical problem since it happened so instantly.



Thanks for the replies.

 

[cerberusiam]

Glad you got it fixed and it was simple.