My torque converter seems to be always locked in 2-3-4 and just releases in low gear. Also seems to short shift at part throttle compared to before. Makes driving a bit awkward. Anything easy to check? 185,000 miles on the 4R70W transmission and still has a firm shift in all gears. I assume if I take it in I would be sold a new trans and TC that I don't think I need yet.

Any work done under the hood lately? Mine short shifts and shifts very firm if I forget to plug the MAF sensor back in after doing work (and it won't even turn on the check engine light until the next drive). BTW my 4R100 normally locks in those gears.Is this an acute problem, or has the shifting progressively been getting worse?

Have you checked the transmission fluid lately? Low fluid levels are one cause of this behavior that is pretty cheap to fix. Be sure you check it the right way, don't just go out and pull the dipstick and expect to learn anything useful.

Not sure about yours, but my Allison 3060 remains unlocked until halfway thru 2nd. It stays locked until returning back to 2nd halfway. Sounds normal to me.Jim

If parked and I move the selector to 2 the engine will stall. sequence P-R-N-D-2-1When slowing in D to a stop it will nearly stall before it gets to low gear.Usually it would lock in 2-3-4 once it was done shifting to smooth things out. Now the shift is very abrupt/harsh with the TC locked. Especially the downshifts.Fluid was changed 5k ago with the same Mobil 1 synthetic.Driven over 3,000 miles with no engine light the past three weeks pulling the trailer from CA to SD and back.Too hot today upon return to check all connectors etc. Thanks for the tips. Anything to add is appreciated :)2001 5.4 F150 4wd

I can tell you this, when the trans shop told me I needed to replace the converter in my Ram I blew them off. Less then six months later I was having the whole trans rebuilt and a new converter. They told me had I just replaced the converter before the trans would have been fine. Don't wait to have it looked at but with 185,000 miles I'm betting your going to need a total rebuild.Good luck Don

Torque converter does not unlock-update #2 8-25

LimogesMan
Explorer
Aug 28, 2014
Agreed. Good and bad news I guess. Maybe bring you wife to test drive new trucks next time around... ;-)
time2roll
Nomad
Aug 26, 2014
As long as it is a real fix that lasts as long as the remaining life of the clutches/transmission then it is for the better.

It will kill me if the clutches give out in the next 5,000 miles or 12 months as I will be wishing I had just done the whole exchange instead of the patch.

Time will tell.
BurbMan
Explorer II
Aug 26, 2014
Nowheres near as bad as it coulda been!
time2roll
Nomad
Aug 25, 2014
Valve body is getting rebuilt at the dealer for $840.
That is good and bad I suppose. DW would not let me look at new trucks ;)

I will pick it up on Saturday. Should be good for another 10 years as I mostly just use it for towing now. Maybe 5,000 miles per year.
LimogesMan
Explorer
Aug 23, 2014
BurbMan wrote:
Any update?

X2?
BurbMan
Explorer II
Aug 20, 2014
Any update?
Mark_Kovalsky
Explorer
Aug 17, 2014
smkettner wrote:
As I was returning I noticed the OD light is flashing. I am sure that is bad but seems to be shifting fine.

That means there was a problem detected in the transmission. It could be anything from a minor wiring issue to needing a new transmission. I will guarantee that if you ignore this you WILL need a new transmission.
Dave_H_M
Explorer II
Aug 17, 2014
OD light flash8ing on my ole F250. The speed sensor went south. Easy plug and play on the rear differential housing on that vehicle.
Lessmore
Explorer II
Aug 17, 2014
I would check it out with a reputable transmission shop.
carringb
Explorer
Aug 17, 2014
OD light flashing is not good. It means the TCM has detected a fault. You will to pull the codes, because it can be anything from a bad speed signal to excessive temps or slipping.