01 4R100 won't shift into 4th

[Lang]

Got home this morning, shifted fine otw home. Left her running in the driveway, grabbed some stuff for my other job, backed up, pulled out, won't go into 4th. Parked til I get done today. Where should I start looking?

 

[Mark Kovalsky]

You should start with seeing if any codes have been stored.

 

[RNicol]

It could possibley be a Solenoid Pack issue, and if you have a TS style chip, make sure it is making good connection because that can make the trans shift weird too.

 

[Lang]

Well went to go drop it off at home, won't go in reverse. Mechanical linkage is correct, just no neutral or reverse.

 

[Mark Kovalsky]

What does it do in neutral and reverse? Try to go forward?

 

[Lang]

What does it do in neutral and reverse? Try to go forward?

Sorry, I push it back in neutral. Won't do anything in reverse, engine just revs. Just got home, any links to trouble shooting TC?

 

[Mark Kovalsky]

Here's how you troubleshoot a torque converter: Does it move in either direction? If it does, the problem is NOT the torque converter.