1995 ACURA TL engine

Description
By integratin g a valv e int o th e muffler , i t wa s possibl e t o reduc e exhaus t nois e a t lo w engin e speed s an d t o improv e
engin e performanc e a t hig h engine speeds withou t enlargin g muffle r volume .
Th e variabl e flo w rat e exhaus t syste m is a simpl e mechanis m tha t use s n o sensors , controller s o r actuators . Openin g an d
closin g o f th e variabl e valv e i s controlle d b y exhaus t ga s pressure .
A t lo w engin e speeds :
Because o f th e lo w flow-rat e o f th e exhaus t gas , th e valv e wil l b e closed ; causin g th e ga s to flo w throug h passag e 1 . Thi s
cause s highe r exhaus t ga s backpressure , whic h dampen s exhaus t noise .
PASSAG E 1
VARIABL E VALV ECLOSE D
At hig h engine speeds :
Th e highe r exhaus t ga s flow-rat e cause s th e valv e t o open , allowin g th e ga s t o flo w throug h passage s 1 an d 2 . Exhaust
ga s backpressur e is decreased , givin g bette r engin e performance .
PASSAGE 1
VARIABLE VALV E
OPE N
PASSAG E 2
Muffle r (Wit h Variabl e Flo w Rat e Exhaus t System )
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Radiator
Illustrate d Inde x
Syste m is unde r hig h pressur e whe n th e
engin e i s hot . T o avoi d dange r o f releasin g scaldin g
coolant , remov e ca p onl y whe n th e engin e i s cool .
Total Coolin g Syste m Capacit y (Includin g heate r an d
reservoir )
7.0 (7. 4 US qt , 6. 2 Im p qt )
Reservoi r capacity : 0. 7 (0. 7 U S qt , 0. 6 Im p qt )
RADIATO REngine coolan t
Refillin g an d bleeding , pag e 10- 5
Lea k test , pag e 10- 6
Inspec t soldere d joint s an d
seam s fo r leaks .
Blo w ou t dir t fro m betwee n
cor e fin s wit h compresse d air .
I f insects , etc. , ar e cloggin g
radiator , was h the m of f wit h
low-pressur e water .
CAUTION : Whe n pourin g engin e coolant , b e sur e t o
shu t th e rela y bo x li d an d no t t o spil l coolan t o n th e elec -
trica l part s o r th e painte d portion . I f an y coolan t spills ,
rins e i t of f immediately .
NOTE:
• Chec k al l coolin g syste m hose s fo r damage , leak s o r
deterioratio n an d replac e i f necessary .
• Chec k al l hos e clamp s an d retighte n i f necessary .
• Us e ne w O-ring s whe n reassembling .
RADIATOR CA PPressur e testing , pag e 10- 6
SELF-LOCKIN G NU TA: 4. 4 N- m (0.4 5 kgf-m ,3.3 Ibf-ft )B: 5. 4 N- m (0.5 5 kgf-m ,4.0 Ibf-ft )Replace .
6 x 1. 0 m m7 N- m (0. 7 kgf-m ,5 Ibf-ft )
COOLAN TRESERVOI R
FAN MOTO R
RADIATO R FA NSHROU D
AUTOMATI C TRANSMISSIO N
FLUI D (ATF ) COOLE R HOSE S
Refe r t o sectio n 1 4 whe n
installing .
CONDENSO RFAN SHROU D
LOWER RADIATO RHOSE
ENGIN E COOLAN TTEMPERATUR ESWITCH A
2 4 N- m (2. 4 kgf-m , 1 7 Ibf-ft )
O-RIN GReplace .6 x 1. 0 m m9.8 N- m (1. 0 kgf-m ,7.2 Ibf-ft )
A: SHOW A ALUMINU M manufacture d radiator .
B : DENS O manufacture d radiator .
O-RINGReplace .DRAINPLUG
UPPE RRADIATO RHOSE
RADIATO RFAN
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Engine Hos e Connections :
THERMOSTA THOUSINGFAST IDL E THERM O
VALV E
IDL E AI R CONTRO L
(IAC ) VALV E
HEATE RHOSES
HEATE RVALVE
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
O-RIN GReplace . DIFFERENTIA
L OI L
COOLE R BYPAS SHOSES
8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
CONNECTIN GPIPE
6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
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Engine Coolan t Refillin g an d Bleedin g
CAUTION : Whe n pourin g engin e coolant , b e sur e t o
shu t th e rela y bo x li d an d no t t o le t coolan t spil l o n th e
electrica l part s o r th e paint . I f an y coolan t spills , rins e it
of f immediately .
NOTE:
• Perfor m thi s procedur e whe n th e engin e i s cool .
• Befor e replacin g th e coolant , tur n th e ignitio n O N (II) ,
slowl y tur n th e climat e contro l temperatur e kno b t o
90 ° an d tur n of f th e ignition . Thi s wil l allo w th e
coolan t i n th e heate r t o drai n ou t wit h th e res t o f th e
system .
1.Whe n th e radiato r i s cool , remov e th e radiato r cap .
Loose n th e drai n plug , an d drai n th e coolant .
Remov e th e drai n bol t fro m th e righ t sid e o f th e
cylinde r bloc k t o drai n th e block .
DRAIN PLU G
DRAI N BOL T59 N- m (6. 0 kgf-m ,
4 3 Ibf-ft )WASHE RReplace.
3. Appl y liqui d gaske t t o th e drai n bol t threads , the n
reinstal l th e bol t wit h a ne w washe r an d tighte n i t
securely .
4. Tighte n th e radiato r drai n plu g securely .
5 . Remove , drai n an d reinstal l th e reservoir . Fil l th e
tan k halfwa y t o th e MA X mar k wit h water , the n u p
t o th e MA X mar k wit h antifreeze .
6 . Mi x th e recommende d antifreez e wit h a n equa l
amoun t o f wate r i n a clea n container .
NOTE:
• Us e onl y genuin e Hond a antifreeze/coolant .
• Fo r bes t corrosio n protection , th e coolan t con -
centratio n mus t b e maintaine d year-roun d a t
50 % minimum . Coolan t concentration s les s tha n
50 % ma y no t provid e sufficien t protectio n
agains t corrosio n o r freezing .
• Coolan t concentration s greate r tha n 60 % wil l
impai r coolin g efficienc y an d ar e no t recom -
mended .
7.
8.
9 .
CAUTION :
• D o no t mi x differen t brand s o f antifreeze/coolants .
• D o no t us e additiona l rus t inhibitor s o r anti-rus t
products ; the y ma y no t b e compatibl e wit h th e
coolant.
Engin e Coolan t Refil l Capacit y [includin g reservoi r
(0.7 (0. 7 U S qt , 0. 6 Im p qt))] :
5.2 (5. 5 US qt , 4. 6 Im p qt )
Loose n th e ai r blee d bolt s i n th e thermosta t hous -
in g an d intak e manifold , the n fil l th e radiato r t o th e
botto m o f th e fille r nec k wit h th e coolan t mixture .
Tighte n th e blee d bolt s a s soo n a s coolan t start s t o
ru n ou t i n a stead y strea m withou t bubbles .
BLEED BOLT S9.8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )
With th e radiato r ca p off , star t th e engin e an d le t i t
ru n unti l warme d u p (radiato r fa n come s o n a t leas t
twice) . Then , i f necessary , ad d mor e coolan t mi x t o
brin g th e leve l bac k u p t o th e botto m o f th e fille r
neck.
Put th e radiato r ca p o n tightly , the n ru n th e engin e
agai n an d chec k fo r leaks .
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Radiator
Cap Testin g
1. Remov e th e radiato r cap , we t it s sea l wit h engin e
coolant , the n instal l i t o n th e pressur e tester .
2 . Appl y a pressur e o f 9 3 - 12 3 kP a (0.9 5 - 1.2 5 kgf/cm
2,
14-1 8 psi) .
3. Chec k fo r a dro p in pressure .
4 . I f th e pressur e drops , replac e th e cap .
RADIATO R PRESSUR E TESTE R
(Commerciall y available )
RADIATO R
CAP
ADAPTO R
(fo r 3 2 m m neck , lo w profile )
Testing
1. Wai t unti l th e engin e i s cool , the n carefull y remov e
the radiato r ca p an d fil l th e radiato r wit h engin e
coolan t t o th e to p o f th e fille r neck .
2 . Attac h th e pressur e teste r t o th e radiato r an d appl y
a pressur e o f 93-12 3 kP a (0.9 5 - 1.2 5 kgf/cm
2, 1 4 -
18 psi) .
3. Inspec t fo r engin e coolan t leak s an d a dro p i n pres -
sure.
4. Remov e th e teste r an d reinstal l th e radiato r cap .
NOTE : Chec k fo r engin e oi l i n th e coolan t and/o r
coolan t i n th e engine oil.
RADIATO R PRESSUR ETESTER(Commerciall y available )
ADAPTO R
(for 3 2 m m neck , lo w profile )
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System Description

Vacuum Connections (cont'd)

'95 - 96 models:

PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S)

SECONDARY HEATED OXYGEN SENSOR (SECONDARY

HO2S)

MASS AIR FLOW (MAP) SENSOR

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

INTAKE AIR TEMPERATURE (IAT) SENSOR

FRONT KNOCK SENSOR (FKS)

REAR KNOCK SENSOR (RKS)

IDLE AIR CONTROL (IAC) VALVE

FAST IDLE THERMO VALVE

IDLE ADJUSTING SCREW

THROTTLE BODY (TB)

FUEL INJECTOR

FUEL FILTER

FUEL PRESSURE REGULATOR

FUEL PULSATION DAMPER

FUEL PUMP (FP)

FUEL TANK

FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE

AIR CLEANER

RESONATOR

CRANKSHAFT SPEED FLUCTUATION (CKF) SENSOR

INTAKE AIR BYPASS (IAB) CHECK VALVE
INTAKE AIR BYPASS (IAB) VACUUM TANK

INTAKE AIR BYPASS (IAB) CONTROL SOLENOID VALVE

INTAKE AIR BYPASS (IAB) CONTROL DIAPHRAGM

EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL

VALVE

EXHAUST GAS RECIRCULATION (EGR) CONTROL

SOLENOID VALVE

EXHAUST GAS RECIRCULATION (EGR) VALVE

EXHAUST GAS RECIRCULATION (EGR) VALVE LIFT

SENSOR

POSITIVE CRANKCASE VENTILATION (PCV) VALVE

EVAPORATIVE EMISSION (EVAP) PURGE CONTROL

SOLENOID VALVE

EVAPORATIVE EMISSION (EVAP) PURGE FLOW SWITCH

EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER

EVAPORATIVE EMISSION (EVAP) PURGE CONTROL

DIAPHRAGM VALVE

EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE

WARM UP THREE WAY CATALYTIC CONVERTER (WU TWC)

THREE WAY CATALYTIC CONVERTER (TWC)

WATER VALVE CONTROL SOLENOID VALVE

WATER VALVE CONTROL DIAPHRAGM

WATER VALVE CHECK VALVEProCarManuals.com

'97 - 98 models:

Vacuum hose No.

PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S)

SECONDARY HEATED OXYGEN SENSOR (SECONDARY

HO2S)

MASS AIR FLOW (MAP) SENSOR

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

INTAKE AIR TEMPERATURE (IAT) SENSOR

FRONT KNOCK SENSOR (FKS)

REAR KNOCK SENSOR (RKS)

IDLE AIR CONTROL (IAC) VALVE

FAST IDLE THERMO VALVE

IDLE ADJUSTING SCREW

THROTTLE BODY (TB)

FUEL INJECTOR

FUEL FILTER

FUEL PRESSURE REGULATOR

FUEL PULSATION DAMPER

FUEL PUMP (FP)

FUEL TANK

FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE

AIR CLEANER

RESONATOR

CRANKSHAFT SPEED FLUCTUATION (CKF) SENSOR

INTAKE AIR BYPASS (IAB) CHECK VALVE

INTAKE AIR BYPASS (IAB) VACUUM TANK

INTAKE AIR BYPASS (IAB) CONTROL SOLENOID VALVE
INTAKE AIR BYPASS (IAB) CONTROL DIAPHRAGM

EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL

VALVE

EXHAUST GAS RECIRCULATION (EGR) CONTROL

SOLENOID VALVE

EXHAUST GAS RECIRCULATION (EGR) VALVE

EXHAUST GAS RECIRCULATION (EGR) VALVE LIFT

SENSOR

POSITIVE CRANKCASE VENTILATION (PCV) VALVE

EVAPORATIVE EMISSION (EVAP) PURGE CONTROL

SOLENOID VALVE

EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER

EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER

VENT SHUT VALVE

EVAPORATIVE EMISSION (EVAP) THREE WAY VALVE

EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE

EVAPORATIVE EMISSION (EVAP) BYPASS SOLENOID

VALVE

FUEL TANK PRESSURE SENSOR

WARM UP THREE WAY CATALYTIC CONVERTER (WU TWC)

THREE WAY CATALYTIC CONVERTER (TWC)

WATER VALVE CONTROL SOLENOID VALVE

WATER VALVE CONTROL DIAPHRAGM

WATER VALVE CHECK VALVEProCarManuals.com

System Descriptio n
System Connector s [Engin e Compartment ]
ENGINEWIRE HARNES S
MAIN WIR EHARNES S
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