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GASOLINE VEHICLE - FUEL SYSTEM
• Unplug fuel pump module at fuel tank and crank engine for 5 seconds to start reducing fuel pressure. Pause and
repeat an additional 5 seconds to allow pressure to dissipate.
NOTE: To absorb any residual fuel the may be present in the fuel hose, place a rag or towel around the hose at
the end being disconnected.
THROTTLE BODY
See General Warnings on page 1-2.
Before suspecting the throttle body as the cause of poor engine performance, make sure the fuel and ignition systems
are in proper operating condition. Check the following items:
• Spark plug and gap condition. See Spark Plug on page 20-5.
• Air filter element. See Air Filter on page 21-14.
• Air intake system (for restriction of air flow). See Air Intake System on page 21-14.
• Exhaust system (for restrictions). See Gasoline Vehicle - Exhaust System on page 22-1.
• Fuel pump. See Fuel Pump Module on page 21-19.
• Fuel line. See Fuel Line on page 21-17.
• Fuel pickup screen or filter. See Fuel Filter on page 21-26.
THROTTLE BODY REMOVAL
See General Warnings on page 1-2.
1.
Turn the key switch to the OFF position and remove the key, place the Forward/Reverse handle in the NEUTRAL
position, and chock the wheels.
2.
Disconnect battery.
See Disconnecting the Battery- Gasoline Vehicles on page 1-3.
3.
If equipped, remove air deflector from top of engine.
4.
If necessary, remove fuel tank to increase access to the throttle body (1). See Fuel Tank Removal, Section
21, Page 21-23.
5.
Clean the throttle body (1) and surrounding area (Figure 21-3, Page 21-6).
6.
Disconnect breather hose (2) from air intake adapter (3).
7.
Disconnect governor cable from bracket (4).
8.
Disconnect fuel injector and MAP sensor.
9.
Remove spring clamps securing fuel line (6) and vent hose (5) to throttle body (1) and disconnect vent hose (5).
10.
Disconnect fuel line (6) and drain into an appropriate container. See following WARNING. Temporarily plug
fuel line to prevent fuel leakage.
WARNING
• Fuel may be under pressure. Use extreme caution when disconnecting fuel line to prevent the spray of
fuel onto hot engine. See Relieving Fuel Pressure on page 21-4.
• Carefully drain any fuel into an approved container. Add drained fuel back into fuel tank or dispose
of properly.
11.
Loosen air intake hose clamp and disconnect air intake hose.
2019 Precedent Villager 2 Maintenance and Service Manual
21
Throttle Body
Page 21-5
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Table of Contents
Troubleshooting
