Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 880

6E–544

TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

2. Slide the EVAP canister vent solenoid into mounting

bracket.

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3. Connect the negative battery cable.

Fuel Tank Pressure (Vapor

Pressure) Sensor

Removal Procedure

1. Remove the fuel pump assembly. Refer to 

Fuel Tank

In Fuel Pump.

2. Carefully pry the fuel tank pressure sensor out of the

top of the fuel pump assembly.

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Inspection Procedure

1. Inspect the vapor pressure sensor for cracks in the

housing and corrosion on the electrical terminals.

2. Inspect the rubber grommet for tears and signs of rot.

Installation Procedure

1. Install the rubber grommet on the fuel pump

assembly.

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2. Install the fuel tank vapor pressure sensor on the fuel

pump assembly.

D

Insert the sensor nipple firmly into the grommet.

D

Keep twisting and pushing the sensor until the wide
portion of the nipple shows on the other side of the
grommet.

3. Install the fuel pump assembly on the fuel tank.  Refer

to 

Fuel Tank In Fuel Pump..

6E–545

TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

EVAP Canister Purge Solenoid

(Purge Duty Solenoid Valve)

Removal Procedure

1. Disconnect the negative battery cable.
2. Disconnect the electrical connector from the EVAP

canister purge solenoid.

3. Disconnect the vacuum hoses from the EVAP

canister purge solenoid.

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4. Remove the EVAP canister purge solenoid retaining

bolt from the common chamber.

5. Remove the EVAP canister purge solenoid.

Installation Procedure

1. Install the EVAP canister purge solenoid on the upper

intake manifold.

2. Install the EVAP canister purge solenoid retaining

bolt.

Tighten

D

Tighten the bolts to 20 N·m (16 lb ft.).

3. Connect the vacuum hoses to the EVAP canister

purge solenoid.

4. Connect the electrical connector to the EVAP canister

purge solenoid.

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Fuel Tank Vent Valve 
(Vent Solenoid Valve)

Removal and Installation Procedure

Refer to 

Fuel Pump section.

Linear Exhaust Gas

Recirculation (EGR) Valve

Removal Procedure

1. Disconnect the negative battery cable.
2. Disconnect the electrical connector at the EGR valve.

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6E–546

TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

3. Remove the bolts from the common chamber.

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4. Remove the EGR valve from the common chamber

manifold.

5. Remove the gasket from the common chamber

manifold.

Installation Procedure

1. Install the gasket on the common chamber.
2. Install the EGR valve on the common chamber.
3. Secure the EGR valve and the gasket with the bolts.

Torque: 25 N·m (18 Ib ft)

NOTE: It is possible to install the EGR valve rotated 180

°

from the correct position.  Make sure that the base of the
valve is placed so that it aligns with the mounting flange.

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4. Connect the electrical connector at the EGR valve.

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5. Connect the negative battery cable.

Positive Crankcase Ventilation

(PCV) Valve

Removal Procedure

1. Remove the vacuum hose at the PCV valve.

D

Slide the clamp back to release the hose.

2. Pull the PCV valve from the rubber grommet in the

right valve cover.

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6E–547

TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS

Inspection Procedure

Before inspecting the PCV valve, make sure that the
hoses are connected properly and are in good condition.
Also check that the oil pan and rocker cover gaskets are
sealing properly.

PCV Valve

1. Run the engine at normal operating temperature.
2. Disconnect the valve from the rocker cover.

RESULT: A hissing noise should be heard from the
valve. If no noise is heard, the PCV valve or hose is
plugged.

3. Remove the PCV valve from the engine.

a. Blow air into the rocker cover side of the valve.
RESULT: Air should pass freely.
b. Blow air into the air cleaner side of the valve.
RESULT: Air should not pass through the valve.

4. Re-install the PCV valve and remove the oil filler cap.

RESULT: A small vacuum should be felt at the oil filler
hole.

Installation Procedure

1. Push the PCV valve into the rubber grommet in the

left valve cover.

2. Install the vacuum hose on the PCV valve and secure

the vacuum hose with the clamp.

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Wiring and Connectors

Wiring Harness Service

The control module harness electrically connects the
control module to the various solenoids, switches and
sensors in the vehicle engine compartment and
passenger compartment.
Replace wire harnesses with the proper part number
replacement.
Because of the low amperage and voltage levels utilized
in powertrain control systems, it is essential that all wiring
in environmentally exposed areas be repaired with crimp
and seal splice sleeves.
The following wire harness repair information is intended
as a general guideline only.  Refer to 

Chassis Electrical

section for all wire harness repair procedures.

Connectors and Terminals

Use care when probing a connector and when replacing
terminals.  It is possible to short between opposite
terminals.  Damage to components could result.  Always
use jumper wires between connectors for circuit
checking.  NEVER probe through Weather-Pack seals.
Use an appropriate connector test adapter kit which
contains an assortment of flexible connectors used to
probe terminals during diagnosis.  Use an appropriate
fuse remover and test tool for removing a fuse and to
adapt the fuse holder to a meter for diagnosis.
Open circuits are often difficult to locate by sight because
oxidation or terminal misalignment are hidden by the
connectors.  Merely wiggling a connector on a sensor, or
in the wiring harness, may temporarily correct the open
circuit.  Intermittent problems may also be caused by
oxidized or loose connections.
Be certain of the type of connector/terminal before
making any connector or terminal repair.  Weather-Pack
and Com-Pack III terminals look similar, but are serviced
differently.