Dodge ram truck 3500 1996 Service Manual page 1363

B R
FUEL SYSTEM 14 - 129
R E M O V A L AND INSTALLATION fContinued)
THROTTLE
LEVER
BALL
THROTTLE LEVER-TO-
INJECTION PUMP LEVER
LINKAGE ROD
THROTTLE
LEVER
THROTTLE
POSITION
SENSOR
POWERTRAIN
CONTROL MODULE
(POM)
LEFT-HAND-
THREADED
NUT
FLAT
RIGHT-HAND-
THREADED
NUT
J9414-67
Fig. 36 Throttle Lever Linkage Adjustment—Diesel
(12) Be sure of wide open throttle (WOT) when
accelerator pedal is pressed to the floor. This is
checked by observing throttle lever breakover posi­
tion. Proceed to the following:
(a) Key OFF and engine OFF for this test.
(b) Two people are needed for this test. From
inside of the vehicle, press the accelerator pedal
about half-way to the floor. Movement of both the
throttle lever and throttle lever-to-injection pump
lever linkage rod (Fig. 36) should be observed.
(c) Continue to press the accelerator pedal to the
floor. I f throttle lever breakover is operating cor­
rectly, the throttle lever-to- injection pump lever
linkage rod should have stopped moving while the
throttle lever continues to move towards the rear
of vehicle.
(13) Again, check and verify low idle speed. Adjust
if necessary.
POWERTRAIN CONTROL MODULE
The PCM is located in the engine compartment
(Fig. 37).
REMOVAL
(1) Disconnect the negative battery cable at bat­
tery.
Fig. 37 PCM Location and Mounting
(2) Carefully unplug the three 32-way connectors
from PCM.
(3) Remove three PCM mounting bolts and remove
PCM from vehicle.
INSTALLATION
(1) Install PCM and mounting bolts to vehicle.
(2) Tighten bolts to 4 N-m (35 in. lbs.).
(3) Check pin connectors in the PCM and the three
32-way connectors for corrosion or damage. Repair
as necessary.
(4) Install three 32-way connectors.
(5) Install battery cable.
AIR CLEANER HOUSING/AIR CLEANER ELEMENT
TESTIKG AIR CLEANER ELEMENT
Do not attempt to unnecessarily remove the
top of the air cleaner housing for air cleaner
element inspection on diesel engines.
The air cleaner (filter) housing is equipped with an
air Filter Minder® gauge (Fig. 38). This air flow
restriction gauge will determine when the air cleaner
element is restricted and should be replaced.
The Filter Minder® consists of a diaphragm and
calibrated spring sealed inside of a plastic housing
(Fig. 39). A yellow colored disc attached to the dia­
phragm moves along a graduated scale on the side of
the Filter Minder. After the engine has been shut off,
a ratcheting device located within the Filter Minder
will hold the yellow disc at the highest restriction
that the air cleaner element has experienced. A drop
in air pressure due to an air cleaner element restric­
tion moves the diaphragm and the yellow disc will
indicate the size of the air drop.