j-fox

I bet it was the dowel pin!! It will be at the front gearcase cover. Can you turn it backwards? DON"T use the starter until you figure it out!

gorms

If you look at the motor while running, it vibrates most at idle. Pull that front cover, at least to fix the kdp if that wasn't the problem.

97CLIFFORD

I was trying to turn the crankshaft. Yes, it did suddenly come to an abrupt stop, but it was more like the same way it stops when you just turn off the key. Nothing violent or noisy at all.

When trying to crank it over it just had no movement at all either way. And, yes I did try it with the starter off. Actually one of the first things I did was to pull the starter out of suspicion cause I'm running cheap filed down bushings and it is old.

One thing I tried last weekend was I jacked up the rear, put everything in neutral, and was able to roll the back wheels. They spun like pinwheels.

This weekend (tomorrow) I'm gonna charge my battery and everything, jack up the rear again, turn the key "on", and put it in drive. To see if I am able to roll the back wheels then?

I am almost positive at this point that it is the trans (47re) and specifically the trans oil pump. I just want more to go on cause I am about broke from having to buy a 2500 gasser (not to mention the gas)

Am I on the right track with what I'm doing?

gorms

It won't go into gear unless the trans pump is supplying pressure to apply a gear. IE the motor has to be running. If you are set on the trans being the problem then yank it out.

the.hogman

Agreed with GORMS, unless there was a castrophic failure in the tranny that has in some way seized the entire torque converter not allowing the engine to turn over... Keep in mind this could be a possibility.

Unless you had the truck in neutral, and held one of the rear wheels from spinning while it was jacked up, all you did was check to see if the rear axle was seized above. Jack one wheel up, put it in nuetral and try to spin a rear wheel, this should make the driveshaft turn, spinning the tranny innards. This WILL NOT verify the torque converter as it is fluid pressure based.

I just have this gut feeling that you are dealing with something other than the tranny. I am still leaning towards the KDP or something inside the front cover physically stopping the motor rotation.

I wish I was closer, this mess has really gotten my interest up.

Someone jump in if I am wrong!!!

esde

Much easier to pull the front cover than the trans. If it's not the KDP and it's in the block you'll have to pull the front cover anyway, when it's time to swap blocks. I have seen many types of transmission failures, manual, and automatic. If there is fluid in it, there's almost no way it could seize from input to output shaft. More likely no way, unless the trans seized, and the torque converter got stuck locked, at the same time. Which is pretty much impossible. Drain the oil next and look for signs of damage, and maybe check the valve covers to see that a valve didn't drop out. Just my .02

IanM

I'd check KDP too...for $80 and 6-8 hours or less, it's 100% worth the peace of mind...especially in the light of your present circumstances.

plcnut

a locked up oil pump in the tranny would cause his exact problem., the pump going out would also explain lots of tranny problems.

joem

+1 as low pressure would cause the converter to never lock and slip- I bet there is a nice stack of shaveings on the pan mag

the.hogman

Wouldn't you still be able to rotate the flywheel with the wheels off of the ground with a locked up pump? Without a locker, I do mean rotate the flywheel and not just one of the rear wheels. Might not be easy, but it should be able to be done I think.

cj360trider

no, you wudnt. it uses the case of the trans as its anchoring so it wud be a no go

the.hogman

Of course!! I wasn't thinking that all of the way through...

cj360trider

happens to all of us from time to time....so dont feel left out lol