Ignition Systems - Chrysler RAM TRUCK 2500 1994 Service Manual

8D - 8 IGNITION SYSTEMS •
Fig. 17 Coolant Temperature Sensor—3.9L V-6 or
5.2/5.9L V-8 Engines—Typical
Fig. 18 Coolant Temperature Sensor—8.0L V-10
Engine
INTAKE MANIFOLD AIR TEMPERATURE SENSOR
The intake manifold air temperature sensor ele­
ment extends into the intake manifold air stream. I t
provides an input voltage to the powertrain control
module (PCM) indicating intake manifold air temper­
ature. The input from this sensor is used along with
inputs from other sensors to determine injector pulse
width. As the temperature of the air-fuel stream i n
the manifold varies, the sensor resistance will
change. This will result i n a different input voltage
to the PCM. For more information, refer to Group 14,
Fuel System.
On 3.9L V-6 or 5.2/5.9L V-8 engines, the sensor is
threaded into the right-front side of the intake man­
ifold (Figs. 19 or 20).
On 8.0L V-10 engines, the sensor is threaded into
the left side of the intake manifold near the front of
the throttle body (Fig. 21).
For component testing, refer to the Diagnostics/Ser­
vice Procedures section of this group.
Fig. 19 Sensor Location—3.9L V-6 Engine—Typical
Fig. 21 Sensor Location—8.0L V-10 Engine—Typical
For removal and installation of this component, re­
fer to the Component Removal/Installation section of
this group.