Truck wants to die when you put in gear

[Skelator4]

I have a 99 f350 when i put the truck in drive or reverse the truck dies..or very close to killing the engine... unless the rpm is up but if i put truck in gear and keep my foot on the break the engine will just labor and the rpm will drop until the engine stalls.. when i get the truck moving it drives fine and no issues with the trans at all...

[XR-2001]

Mine recently did that,,, it turned out to be the torque convertor was toasted.
What's yer tranny temps while running? Mine had never gone past 160 degrees before the problem. Right after mine did what yours is doing, the temps shot up to 220 plus, but that was on the way to the emergancy room for removal of appendix, I did not care it it hit 1000 degrees that day, long as it got me to the ER, which it did,,, and earned a tow truck ride back home.... LOL !

[Skelator4]

My trans temps are still normal.... usually under 210 at the highest while plowing snow...

[XR-2001]

Mine would do fine in forward, only reverse had issues. I had it scanned, which showed no codes, which I thought was wierd. The mechanic said the TC was toasted, the 3rd one in a month he'd had in the shop like that with almost the same symptoms, lurching and dying in gear.
RB

[freeride707]

mine did that and the trans went within 500mi, check fluid levels first though, my BTS was doing the same thing till i got fluid levels correct. now it drops from 650 down to about 600rpms

[ipz2222]

There are 2 main causes for that. Cross leak in pump( main line pressure leaks into the tc on circuit and applies the tc clutch, lugging the eng down and sometimes killing it). Defective torque converter ( clutch release oil leaking into the apply side of the clutch, ie cracks, again causeing the clutch to apply and kill te motor).
I allways replace both because there is no way to test which one is the culprit.

[freeride707]

Just curious if there was a weak pump would there be a code? And would it shutter while Shifting and driving with TC locked?

[ipz2222]

It will not set a code but may cause low pressure and cause slipping in other gears.

[freeride707]

so it would cause sloppy shifts occasionally. probably be worse in reverse? ive got a vibration under load but really bad when TC is locked or in reverse, and drops the rpms when the brake his heald down at a stop, doesnt kill the engine, but strains it quite a bit, it almost kills the engine when its cold.

[Skelator4]

So I had the trans rebuilt and now the light on the gear selector is blinking after it shifts the firts time and does not go off till the truck is turned off... so the trans shop pulls the code and its something to do with the exhaust pressure.... any ideas