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Alright, I may have a unique issue. Have a new to me 1996 Bronco. Transmission was rebuilt last summer. Drive fine the first month I had it, then all of a sudden the OD light started flashing one morning. The transmission started shifting hard, but other than that, there were no issues. Limped to work, and took it to a transmission shop...still blinking on the way there. When they got around to looking at it, no blinking light, and no codes. I picked it up and it drove home just fine. Fast forward to this morning- I run a few errands, and on the way home, the problem starts again. Speedometer works, cruise works, it's just the transmission that shifts hard! Help! What do I need to do to fix this permanently? Previous owner told me this never happened to him, and I don't have a reason to not trust him.
 

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Welcome to our community Bschulz :thumbup

First, start by clicking userCP up top and fill in your details so that they show up over














<-----------------there on every post.

Second, have your codes pulled. Being your's is a 96, your system is OBD2. Go to any auto parts store and they should be able to retrieve what the computer has stored.

Third, read this thread. It has a lot of info about the E4OD.

Although I've only experienced this issue once, it's never done it to me again to figure out what caused it. Only happened when I was towing a heavy load of wood 200 miles.
 

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Discussion Starter #4
Steve83, PO had it rebuilt at a shop in Houston, and I am about 200 miles from there. I guess I'll need to find a shop that can read the code while it is blinking. My initial thought after reading is the VSS. Perhaps a bad connection or bad unit.
 

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yo,
Transmission Control Switch (TCS) and Lamp Operation

The transmission control switch is a momentary contact switch. When the switch is pressed, a signal is sent to the powertrain control module (PCM) (12A650). The powertrain control module then energizes the transmission control indicator lamp and the coast clutch solenoid, applying the coast clutch to provide engine braking and cancels fourth gear operation. The TCIL indicates overdrive cancel mode activated (lamp on), electronic pressure control circuit shorted or monitored sensor failure (lamp flashing).

from
Section 07-01A: Transmission, Automatic, E4OD

1996 All F-Series and Bronco with E4OD Automatic Transmission Workshop Manual (PARTIAL)


Transmission Control Indicator Light (TCIL) Troubleshooting in 92-96; "...Check the wiring from the OD switch at the steering column, the wires there are known to break. Could well be the problem. Check also that your brake lights are working properly and if you have spliced in wiring at the rear lights check the condition of it..."
Source: by Case 7230

Transmission Control Indicator Light (TCIL) Troubleshooting in 92-96; "...check the wires coming out of the shifter handle, I have had several trucks have those wires short out and cause some strange symptoms. Just pull the plastic cover off the top of the column and take a look, it's pretty obvious when it happens..."
Source: by jrainw

Transmission Control Indicator Light (TCIL) Troubleshooting in 92-96; "...because wiring may be misrouted causing a short in the steering column and a blown #17 fuse in TSB 92-22-5 for 92 Bronco & all Light Trucks
Here is a TSB that deals with it; for a 92 though.. and may apply... even tho year range is off... and your OD sw is in dash and 96's are on end of tranny stalk....but... itsa pure guess on my part..and it's an ez no $ check anyhowz
1992 Ford Truck F 150 4WD Pickup V8-351 5.8L
Vehicle Level Transmission and Drivetrain Technical Service Bulletins Customer Interest Electrical Systems - Multiple Malfunctions
Electrical Systems - Multiple Malfunctions
Article No. 92-22-5 10/21/92
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.
1. Remove the steering column cover. Refer to the 1992 Bronco/F-Series Service Manual, Section 11-04B, for the removal procedure.
2. Examine the transmission control switch wiring for damage, Figure 1. (I don't have this Figure)
3. Repair or replace the wiring as necessary.
4. 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.
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS:
Eligible Under Bumper To Bumper Warranty Coverage
OPERATION DESCRIPTION TIME
922205A Repair Wiring 0.6 Hrs.
DEALER CODING
BASIC PART NO. CONDITION CODE
15A808 X1

Before buying any parts;
This problem could be caused by a # of thangs;

bad vehicle speed sensor (VSS) (also called ABS,, DSS sensor) on da 8.8 (rear differential)/ or Connector/corroded wires inside connector;
or cruddy/damaged tone ring in the 8.8.
bad PSOM (Speedo)
bad 4WABS Module - It is located below ws wiper fluid/coolant recovery tank. So, the connector can be corroded by leaking fluid

bad wiring/shorts /connectors from VSS at firewall, at 4WABS Module and /or at PSOM and then onto the PCM the locations of the connectors along the path from VSS to 4WABS and up to Instr Cluster & PSOM are;

C404 VSS On rear axle sensor (A7) Terminals: 02

C205 LH rear of engine compartment, in safety wall (Fire Wall) Terminals: 24 In-Line

C202F & M LH rear of engine compartment, in safety wall (A8) Terminal: 7 In-Line

C119 LH front corner of engine compartment on 4WABS control module (E10),Terminals: 40

O/LB to:
C202F & M LH rear of engine compartment, in safety wall (A8) Terminal: 7 In-Line

C252 Programmable Speedometer/Odometer Module (PSOM), Behind top LH side of I/P, on PSOM (A7) Terminal: 12 Color: B at Pins 4

LG/Y to Splice S107 Engine control sensor harness, from C119 near T/O to G101 (G101 RH side of Radiator support); to PSOM Pin 5
C202 F and M
and spliced to Ground G100 (BK)
G100 & G104 (tied together in diagram) G100 @ LH front of engine compartment, on upper radiator support

G100 Serves Component:
Fuel Pump Module
Inertia Fuel Shutoff
Misfire Sensor
Misfire Sensor Shield
Output Shaft Speed (OSS) Sensor
Powertrain Control Module (PCM), 5.0L


From PSOM Pin 7 (GY/BK) to Splice S246 Main harness, near T/O to speed control amplifier to
C185 PK/O @ PCM 5.0L Powertrain Control Module (PCM) LH side of safety wall, on powertrain control module (PCM) (C10) Terminal: 104 Color: GY
C185, 5.8L Powertrain Control Module (PCM) LH side of safety wall, on powertrain control module (PCM) (C10) Terminal: 104 Color: GY

C185 @PCM to C202 F and M
Splice 216 to Ground G200, Instrument Cluster ground is inside passenger side kick panel

and on to C185 @ PCM PIN 58 (GY/BK) and from Pin 46 to MLPS (TR) Pin 2
Verify PCM & MLPS wiring & Pin numbers using following WIRING DIAGRAMs by Ford via Steve83
(my eyesight is fuzzy again)
http://www.supermoto...y/media/95931_1



Have Codes pulled @ most parts stores for free.


Source: by miesk5 at FSB
 
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