Throttle Body Assy
Idle Speed Inspection
Refer to Idle Speed Inspection in the Periodic Mainte-
Idle Speed Adjustment
Refer to Idle Speed Adjustment in the Periodic Mainte-
Throttle Bore Cleaning
Check the throttle bore for cleanliness as follows:
Remove the air cleaner housing (see Air Cleaner Housing
Check the throttle bores [A] at the throttle valves [B] and
around them for carbon deposits by opening the valves.
If any carbon accumulates, wipe the carbon off the throttle
bores around the throttle valves, using a lint-free cloth [C]
penetrated with a high-flash point solvent.
High Altitude Performance Adjustment
Any modification is not necessary in this model since the
atmospheric pressure sensor senses pressure change
due to high altitude and the ECU compensates the
Throttle Body Assy and Intake Manifold Removal
Remove the fuel tank (see Fuel Tank Removal).
Gasoline is extremely flammable and can be explo-
sive under certain conditions. Make sure the area
is well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light. Do not smoke. Turn the ignition switch OFF.
Disconnect the battery (–) terminal.
Be prepared for fuel spillage; any spilled fuel must
be completely wiped up immediately.
Air Cleaner Housing (see Air Cleaner Housing Removal)
Vacuum Hose [A] from Separator (California Model)
Vacuum Hose [B] from Inlet Air Pressure Sensor
manuals search engine
FUEL SYSTEM (DFI) 3-113