No OD and slipping 3rd.
Okay, I have a 97 4R70W transmission installed in a 95 Cougar.
Trans had recent JMOD, fluids were clear when drained originally, replaced with Mobil 1 Mercon V/Dextron multi blend ATF. Fluid levels are good.
New reman torque converter from MK8.
New TC Solenoid
JMOD was done a few months ago (mild spec), in preparation for install. Just got everything installed last night and took the car out for a shakedown run. Noticed no OD on highway and the trans wouldn't shift back down to 3rd.
If I turn the OD off, the car will operate normally through 1-2, 2-3 shifts, and shift down normally as well.
If I engage the OD, the car will operate normally 1-2, 2-3 then no OD and when slowing down, does not re-engage 3rd. I have to bump it down to 2nd manually to get it to grab a gear.
Just wondering if there is a good place to start without tearing everything apart again.
I'm assuming it's either the band or the shift solenoid.
Thanks in advance.
95 Cougar 4.6