Engine/Transmission (1998.5 - 2002) 98 won't go in to overdrive

[mjs]

I'm shure this is a computer , sensor or solenoid problem . The scanner shows 4th shifting but it's not engaging . Their was a test for the solenoids but i could not hear the OD one clicking . Any one else had this problem ? Thans Mike

 

[DHawk]

If you shut the o/d off button and it goes into tcc partial lockup you know the

two solenoids in the valve body are receiving 12 volts, the fuse is ok in the power

distribution center, and the trans relay is ok. If not start there.

If it does lockup, check and make sure the pcm is grounding pin 2 at the eight way

connector on top of the transmission when it calls for o/d. If not start tracing wires,

if it does, it is solenoid, valve body, o/d clutch pack, or o/d piston seals.

 

[mjs]

Thanks the conveter dose lock in 3rd . I'll go from thier