E4OD acting crappy in OD

[5.0Flareside]

ok guys in my 92 Flareside that has a E4OD it has been acting funny the past couple of days. when im in overdrive the truck will be cruising along and it sounds like the engine is reving up and down up and down. its not like its dropping in and out of overdrive. im wondering what could be causing this?

and its only in OD not in 3rd. like if i turn OD off its acting normal.

its this what everyone calls Shuttering?

or maybe its the throttle position sensor?

gonna pull codes in just a couple of minutes...

 

[blacksnapon]

Just out of curiosity, turn off your a/c or defrost when its doing it just to see if it quits.

 

[5.0Flareside]

i dont have the ac or defrost on when its doing it.

why? how is that related?

 

[blacksnapon]

i dont have the ac or defrost on when its doing it.

why? how is that related?

The IAC increases the idle when the a/c compressor kicks on.

 

[5.0Flareside]

ok.. im still a lil confused. but go ahead...... ive got a few people saying the Torque Convertor Clutch may not be staying locked.

 

[blacksnapon]

The only other thing, is there anything else going on? Could be seemingly unrelated (blown fuses, steering column controls not working). Theres a tsb on 3-4 shift cycling.

 

[5.0Flareside]

no. just it seems like it revs up and down in OD. but when i turn OD off its fine.

and it only does it when its cold. once the truck is warmed up it drives fine.

 

[blacksnapon]

no. just it seems like it revs up and down in OD. but when i turn OD off its fine.

and it only does it when its cold. once the truck is warmed up it drives fine.

When the od is engaged, the converter is locked. It will tend to "magnify" anything going on with the engine (misfires, idle changes, etc.). If the idle is being raised by the a/c compressor, then dropped when it kicks off, it would be noticed more in od. Some vehicles automatically turn on the compressor at first startup until warmed to insure that the oil is distributed isise the system.

 

[blacksnapon]

TSB
92-22-5 BRAKES - REAR ANTI-LOCK BRAKE SYSTEM ELECTRONICS INOPERATIVE - VEHICLES WITH E4OD TRANSMISSION
INSTRUMENT CLUSTER - LOSS OF INSTRUMENTATION GAUGES - VEHICLES WITH E4OD TRANSMISSION
LAMP - TRANSMISSION CONTROL LIGHT CYCLES ON/OFF OR CONTROL SWITCH INOPERATIVE - VEHICLES WITH E4OD TRANSMISSION
WIRING - E4OD TRANSMISSION CONTROL SWITCH - SHORTS IN STEERING COLUMN AND BLOWS #17 FUSE
TRANSMISSION - E4OD - CONTROL SWITCH WIRING SHORTS IN STEERING COLUMN AND BLOWS #17 FUSE
TRANSMISSION - E4OD - EARLY SHIFTS, LOSS OF POWER, POOR ACCELERATION AND 3-4 SHIFT CYCLING

Publication Date: OCTOBER 21, 1992

LIGHT TRUCK: 1992 BRONCO, F SUPER DUTY, F-150-350 SERIES


ISSUE:
The transmission control switch wiring may be misrouted causing a short in the steering column and a blown #17 fuse. The following symptoms may be associated with this concern.

Early shifts
Loss of power
Poor acceleration
3-4 shift cycling
Transmission control light cycling ON/OFF or inoperative
Transmission control switch inoperative
Rear Anti-Lock Brake System (RABS) electronics (dash lights on, etc.) inoperative
Loss of instrumentation (tach, fuel gauge, etc.)
Unable to read Self-Test codes (solid tone only)

ACTION:
Inspect the transmission control switch wiring for damage and repair or replace as necessary. Refer to the following procedure for service details.

SERVICE PROCEDURE


Remove the steering column cover. Refer to the 1992 Bronco/F-Series Service Manual, Section 11-04B, for the removal procedure.
Examine the transmission control switch wiring for damage.

Repair or replace the wiring as necessary.
Install the steering column cover. Refer to the 1992 Bronco/F-Series Service Manual, Section 11-04B, for the installation procedure.
CAUTION: DURING REASSEMBLY, ROUTE WIRING AWAY FROM ATTACHING SCREW SO AS NOT TO PINCH OR DAMAGE WIRE.




PART NUMBER PART NAME CLASS
F2TZ-7210-F Lever And Wiring Harness B
D9ZZ-14526-C Fuse AM

 

[5.0Flareside]

ok im gonna check into this TSB in the next day or 2.