Air Intake System
Throttle Body
Description
The throttle body is of the single-barrel side-draft type.
The lower portion of the throttle valve is heated by
engine coolant which is fed from the cylinder head. The
idle adjusting screw which increases/decreases bypass
air and the canister/purge port are located on the top of
the throttle body. A
is used to slow the throttle
as it approaches the closed position.
DIAPHRAGM
I
THROTTLE
STOP SCREW
IDLE ADJUSTING
ACTUATOR
Inspection
CAUTION: Do not adjust the throttle stop screw since
it preset at the factory.
1 .
Start the engine and allow it to reach normal
operating temperature (cooling fan comes on).
2.
Disconnect the vacuum hose (to the canister) from
the top of the throttle body; connect a vacuum
gauge to the throttle body.
-XXXXX
3.
Allow the engine to idle and check that the gauge
indicates no vacuum.
If there is vacuum, check the throttle cable
(page 1 l-l
4.
Check that vacuum is indicated on the gauge when
the throttle is opened slightly from idle.
If the gauge indicates no vacuum, check the
throttle body port. If the throttle body port is
clogged, clean it with carburetor cleaner.
5.
Stop the engine and check that the throttle cable
operates smoothly without binding or sticking.
If there are any abnormalities in the above steps,
check for:
Excessive wear or play in the throttle valve
shaft.
Sticky or binding throttle lever at full close
position.
Clearance between throttle stop screw and
throttle lever at full close position.
1 l-l 14
Содержание Acura NSX 1991
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Страница 22: ...Special Tools Individual tool lists are located at the front of each section ...
Страница 23: ...Specifications Standards and Service Limits 3 2 Design Specifications 3 l 1 ...
Страница 39: ...Body Specifications m I 1 175 46 3 Unit mm in ...
Страница 40: ...Maintenance Lubrication Points 4 2 Maintenance Schedule 4 4 ...
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Страница 60: ...Engine Removal Installation ...
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Страница 162: ...Intake Manifold Exhaust System Intake Manifold 9 2 Exhaust Manifold 9 3 Exhaust Pipe and Muffler 9 4 ...
Страница 191: ... n EilEli3 A A A Cl51 c4 BLU 1 TACHO METER CONNECTOR Cl61 C478 C488 REDlYEL YELlRED J A GlOl ...
Страница 193: ... PGM FI 1 IDLE CONTROL 1 FUEL SUPPLY 1 EMISSION CONTROL II 17 ...
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Страница 484: ...Illustrated Index Transmission Housing 14 102 ...
Страница 486: ...Illustrated Index Torque Converter Housing Valve Body ...
Страница 527: ...3 Assemble the transmission in the following numbered sequence Replace cont dl ...
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Страница 830: ...Types and Materials of Exterior Resin Parts Fuel filler lid HAS 2148 Gnylon PPO alloy Page 20 57 20 4 ...
Страница 876: ...UPPER FRAME Rear Bumper Disassembly BUMPER BEAM UPPER LICENSE PLATE SUPPORT SUMP R SKIRT 20 50 ...
Страница 888: ...Frame Repair Chart 20 62 ...
Страница 892: ...Heater Evaporator Door Position a C O L D KA type only VENT DOOR DEFROSTER EVAPORATOR HEATEd CORE CORE 22 4 ...
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Страница 1015: ...e RIGHT RETRACTOR SUB HARNESS I LEFT RETRACTOR SUB HARNESS I ...
Страница 1017: ...FLOOR WIRE HARNESS I Lx C 4 1 6 I C4b5 c 2 I LEFT KICK PANEL I I c422 C425 C424 C426 C423 I 0404 6701 kont d 23 31 ...
Страница 1019: ...C466 C465 C468 C464 c473 FLOOR WlFiE HARNESS co d 23 33 ...
Страница 1021: ... ITI RETRACTABLE HEADLIGHT CONTROL UNIT i FLOOR WIRE HARNESS 23 35 ...
Страница 1023: ...MAIN FUSE BOX I 23 37 ...
Страница 1027: ...DRIVER S DOOR WIRE HARNESS PASSENGER S DOOR WIRE 23 41 ...
Страница 1029: ...SRS CONTROL UN FUEL TANK WIRES 23 43 ...
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