Fuel Injection Pump - TPS Sensor Service

90ford02

FUEL INJECTION PUMP - 7.3L DIESEL ENGINE - THROTTLE POSITION SENSOR - NEW SERVICE PART AND PROCEDURE - ENGINES BUILT AFTER 10/21/88

Article No. 90-2-9

LIGHT TRUCK: 1988-89 E-250, E-350, F-250, F-350, F SUPER DUTY




ISSUE: An electronic throttle position sensor (TPS) is used on all E and F Series trucks with an E40D automatic transmission. The TPS and vacuum regulator valve (VRV) serve the same purpose; they control the shift points of the automatic transmission. The VRV uses vacuum to control the shift points, while the TPS sends a voltage signal that varies with the throttle position to the E40D automatic transmission.

ACTION: If a fuel injection pump is received with the TPS installed (see chart below for applicable units) it must be removed prior to servicing the pump. Use the following service procedure to remove and install the TPS.

7.3L ENGINES EQUIPPED WITH TPS

SERIAL BREAK
EQUIPPED MODELS NUMBERS DATE

All Automatic Transmissions 630772 and 10-21-88
with Sea Level Altitude Pumps Above

All Automatic Transmissions 631811 and 10-21-88
with High Altitude Pumps Above

Figure 1:

REMOVAL

1. Remove the TPS button head torx cap screws and washers by using a T-27 x 2 inch torx bit, Figure 1. This bit is usually used for the face cam screw.

CAUTION: DO NOT REMOVE THE SCREWS THAT MOUNT THE SENSOR TO THE BRACKET.

2. Position the throttle lever in the wide open position.

3. Remove the small set screw located at the 5:00 o'clock position.

4. Remove the large set screw located at the 2:00 o'clock position.

5. Slide the shaft adapter off the pump throttle lever shaft.

INSTALLATION

1. Position the throttle lever in the wide open position.

2. Slide the shaft adapter onto the throttle lever shaft with the small set screw hole directed to the 5:00 o'clock position.

a. Insert a small pointed tool, such as a dental pic into the small 5:00 o'clock hole.

b. Move the shaft adapter until the hole on the throttle lever shaft is located with the tool.

3. Install the large set screw at the 2:00 o'clock position. Tighten to 30 lb.in. (3.4 N-m). Remove the tool.

4. Install the small set screw at the 5:00 o'clock position. Tighten to 30 lb.in. (3.4 N-m).

5. Install the TPS button head torx cap screws and washers by using a T-27 x 2 inch torx bit.

OTHER APPLICABLE ARTICLES: 89-12-8
WARRANTY STATUS: Eligible Under Basic Warranty Coverage, Powertrain Warranty Coverage
OPERATION DESCRIPTION TIME
900209A Remove TPS Sensor 0.4 Hr.
DEALER CODING
BASIC PART NO. CONDITION CODE
9B989 07
OASIS CODES: 4500