i just picked up a 1995 ford ranger 4.0 automatic 4x4 and itll go throw all the forward gears fine but when i try to put in to reverse it will hesitate an slam in some time illl have to bring up the rpms some for it to go in but i allso noticed the over drive off light will start flashing and itll goin to reverse but it feels like the the torqconverter is locking up cause its really doggy and power less but only if that lights flashing? any ideas????

Engagement Concerns: Harsh Reverse Only Possible Component Reference/Action
203 — ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, internal transmission wiring harness, powertrain control module, TP, VSS, RPM, EPC, SS1 (off)
Run on-board diagnostics. Refer to Powertrain Control/Emissions Diagnosis Manual for diagnosis. Using Rotunda Transmission Tester 007-0085C, perform transmission static and dynamic tests. Perform the following Pinpoint Tests: A and E. Service as required. Clear codes, road test and rerun on-board diagnostics.

303 — HYDRAULIC/MECHANICAL ROUTINE
Improper Pressures
Improper band/clutch application pressures, line pressure high
Check line pressure at tap. Perform line pressure and stall speed tests. Refer to pressure chart No. 401 for specifications. If pressure is high, check the following possible components: main control.

Main Control Assembly
Bolt out of torque specification
Retorque to specification.

Gasket damaged, off location
Inspect and replace gasket.

Separator plate damaged
Inspect for damage, service as required.

EPC, SS1, solenoid stuck, damaged, O-ring damaged or out of bore
Inspect for damage, perform solenoid function test as listed in electrical routine service as required.

Reverse modulator valves (205), pressure boost valve/main regulator valve (208), check ball B, springs, damaged, missing, misassembled, stuck, bore damaged
Inspect for damage. If damaged, replace main control. If parts are missing, replace missing parts or main control. If misassembled, reassemble properly. Do not stone, file or sand valves. This will remove the anodized finish and may result in further main control or transmission damage.

Wrong components used in rebuild
Verify that proper components were used.

Direct/Reverse Clutch Assembly
Assembly

Seals damaged, missing

Center support hub/seal ring damaged

Check ball damaged

Friction elements damaged or missing
Air check clutch assembly as outlined in this manual.

Inspect direct clutch assembly for damage. Service as required.