Throttle Position (TP) Sensor

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, 1995 Dodge Dakota, and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: TP sensor is not adjustable. Use the following procedures to check TP sensor calibration. For complete testing of TP sensor, see TESTS W/CODES - 3.9L article in the ENGINE PERFORMANCE section.

Remove air cleaner housing assembly. Turn ignition switch to ON position. DO NOT start engine. Using a DVOM, measure voltage at center terminal of TP sensor, with throttle valve in idle position fully closed against stop. Voltage should be within specification. See THROTTLE POSITION SENSOR VOLTAGE TEST table. If voltage is not within specification, replace TP sensor.
Slowly open throttle valve to Wide Open Throttle (WOT). TP sensor voltage should increase steadily to specification. If voltage does not increase steadily to specification, replace TP sensor.

THROTTLE POSITION SENSOR VOLTAGE TEST ⁽¹⁾

Throttle Opening ⁽²⁾

Volts

Idle

Greater Than 0.2

WOT

Less Than 4.8

⁽¹⁾	Voltage should increase steadily as throttle opening is increased from idle position.

⁽²⁾	Measure voltage at throttle position sensor center terminal.