ACURA NSX 1991 Service Repair Manual

ACURA NSX 1991 Service Repair Manual NSX 1991 ACURA ACURA https://www.carmanualsonline.info/img/32/56988/w960_56988-0.png ACURA NSX 1991 Service Repair Manual
Trending: lock, check transmission fluid, warning lights, tire size, CD changer, steering wheel, change wheel

Page 271 of 1640

ACURA NSX 1991  Service Repair Manual Throttle Bod y
Descriptio n
The throttl e bod y is  o f th e single-barre l side-draf t type .
Th e lowe r portio n o f th e throttl e valv e i s heate d b y
engin e coolan t whic h is fe d fro m th e

Page 272 of 1640

ACURA NSX 1991  Service Repair Manual 
Intake Air System

Throttle Body

Disassembly

THROTTLE BODY

IDLE ADJUSTING

SCREW

O-RING

Replace.

THROTTLE VALVE

CONTROL MOTOR

INTAKE AIR DUCT
TP SENSOR

22 N-m

(2.2 kgf-m,

16 Ibf-ft)ProCarM

Page 273 of 1640

ACURA NSX 1991  Service Repair Manual 
Fuel Injection Air (FIA) Control System

Description

The Fuel Injection Air (FIA) Control system enables fresh air to be drawn through the throttle body and fuel injector port.

IDLE ADJUSTING

SCRE

Page 274 of 1640

ACURA NSX 1991  Service Repair Manual 
Intake Air System

Intake Air Bypass (IAB) Control System

Description

Satisfactory power performance is achieved by closing and opening the intake air bypass (IAB) control valves. High torque

at l

Page 275 of 1640

ACURA NSX 1991  Service Repair Manual Intake Ai r Bypas s (IAB ) Contro l Valv e Testin g
CAUTION : D o no t adjus t th e IA B contro l valv e full-clos e
screw . I t wa s prese t a t th e factory .
1 . Chec k th e IA B contro l valv e sh

Page 276 of 1640

ACURA NSX 1991  Service Repair Manual Emission Contro l Syste m
System Descriptio n
The emissio n contro l syste m include s tw o Thre e Wa y
Catalyti c Converter s (TWCs) , Exhaus t Ga s Recirculatio n
(EGR ) system , Positiv e Crankcas

Page 277 of 1640

ACURA NSX 1991  Service Repair Manual 
Three Way Catalytic Converter (TWC)

Description

The Three Way Catalytic Converter (TWC) is used to convert hydrocarbons (HC), carbon monoxide (CO), and oxides of

nitrogen
 (NOx)
 in the
 exhaust

Page 278 of 1640

ACURA NSX 1991  Service Repair Manual Exhaust Ga s Recirculatio n (EGR ) Syste m
The EG R syste m is designe d t o reduc e oxide s o f nitroge n emission s (NOx ) b y recirculatin g exhaus t ga s throug h th e EG R
valv e an d th e intak

Page 279 of 1640

ACURA NSX 1991  Service Repair Manual Emission Control System
Positive Crankcas e Ventilatio n (PCV ) Syste m
Descriptio n
Th e Positiv e Crankcas e Ventilatio n (PCV ) syste m is
designe d t o preven t blow-b y ga s fro m escapin g t o t

Page 280 of 1640

ACURA NSX 1991  Service Repair Manual 
Evaporative Emission (EVAP) Controls

Description

The evaporative emission controls are designed to minimize the amount of fuel vapor escaping to the atmosphere. The

system consists of the followin
Trending: lug pattern, gearbox, brake pads, fuel type, ABS, lock, fuel cap