ACURA TL 1995 Service Repair Manual

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 th e ca p onl y whe n th e engin e is cool .
Tota l Coolin g Syste m Capacit y (Includin g heate r an d
reservoir )
7.7 (8. 1 US qt , 6. 8 Im p qt )
Reservoi r capacity : 0.6 5 (0.6 9 U S qt , 0.5 7 Im p qt ) 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 it 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 if necessary .
• Chec k al l hos e clamp s an d retighte n if necessary .
• Us e ne w O-ring s whe n reassembling .
RADIATOR CA PPressur e testing , pag e 10- 6RADIATO REngine coolan t
Refillin g an d bleeding , pag e 10- 5
Leak test , pag e 10- 6Inspec t soldere d joint s an dseam s fo r leaks .Blow ou t dir t fro m betwee ncore fin s wit h compresse d air .If insects , etc. , ar e cloggin gradiator , was h the m of f wit hlow-pressur e water .
AUTOMATI C TRANSMISSIO NFLUID (ATF ) COOLE R HOSE SRefer t o sectio n 1 4 whe ninstalling .
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Engine Hos e Connections :
HEATERVALVEHEATE RHOSES
IDL E AI R
CONTRO LVALVE
WATE R BYPAS S
HOSES
THERMOSTA THOUSING
FAST IDL E THERM O
VALV E
REA R WATE R
OUTLE T
AT F COOLE R
HOSE S
Refe r t o sectio n 1 4
whe n installing .
ATF COOLE R
PIP E
COOLAN T
RESERVOI R
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Radiator
5. Remov e th e fa n shrou d assemblie s an d othe r part s
from th e radiator .
Install th e radiato r i n th e revers e orde r o f removal :
NOTE:
Set th e uppe r an d lowe r cushion s securely .
Fil l th e radiato r wit h engin e coolan t an d blee d th e air .
VACUU MTANK
6 x 1. 0 m m8 N- m (0. 8 kgf-m ,6 Ibf-ft )
CONDENSO RFAN SHROU D
6 x 1. 0 m m7 N- m (0. 7 kgf-m ,
5 Ibf-ft )
FAN MOTO RCONNECTO R
RADIATO R FA N
SHROU D
ATF COOLE R
HOSE S
Refe r t o sectio n 1 4
whe n installing .
UPPER RADIATO R
HOS E RADIATO
RCAP6 x 1. 0 m m9.8 N- m (1. 0 kgf-m ,
7. 2 Ibf-ft )
UPPE R BRACKE T
AND CUSHIO N
RADIATO R
LOWE R
CUSHIO N
O-RINGReplace .
ECT SWITC H24 N- m (2. 4 kgf-m ,17 Ibf-ft )
LOWE R RADIATO R
HOS E
FA N MOTO R
CONNECTO R
ECT SWITC HCONNECTO R
DRAINPLUG
O-RIN GReplace .
Replacemen t
1. Drai n th e engin e coolant .
2 . Remov e th e uppe r an d lowe r radiato r hoses , an d
AT F coole r hoses .
3 . Disconnec t th e fa n moto r connector s an d EC T
switc h connector .
4 . Remov e th e radiato r uppe r brackets , the n pul l u p
th e radiator .
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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 is 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 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e radio ,
the n writ e dow n th e frequencie s fo r th e radio' s pre -
se t buttons .
2 . Disconnec t th e batter y negativ e termina l first , the n
th e positiv e terminal , the n remov e th e batter y an d
batter y bas e (se e pag e 5-4 ).
3 . 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 .
4 . Remov e th e drai n bol t fro m th e lef t sid e o f th e cylin -
de r bloc k t o drai n th e block .
DRAINPLUG
5.
WASHE RReplace .DRAIN BOL T64 N- m (6. 5 kgf-m ,
4 7 Ibf-ft )
Apply 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 .
6. Tighte n th e radiato r drai n plu g securely .
7 . 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 . 8
. 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:
Use 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 .
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 .
Engine Coolan t Refil l Capacit y [Includin g reservoi r
(0.65 (0.6 9 U S qt , 0.5 7 Im p qt))] :
3.2 (3. 4 US qt , 2. 8 Im p qt )
9. Loose n th e ai r blee d bol t i n th e wate r passage , the n
fill th e radiato r t o th e botto m o f th e fille r nec k wit h
the coolan t mixture . Tighte n th e blee d bol t a s soo n
a s coolan t start s t o ru n ou t i n a stead y strea m with -
ou t bubbles .
10 . Wit h 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 to th e botto m o f th e fille r neck .
11 . Pu t th e radiato r cap on tightly , the n ru n th e engin e
agai n an d chec k fo r leaks .
12 . Ente r th e anti-thef t cod e fo r th e radio , the n ente r th e
customer' s radi o statio n presets .
BLEED BOL T9.8 N- m (1. 0 kgf-m , 7. 2 Ibf-ft )
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Radiator

Cap Testing

1. Remove the radiator cap, wet its seal with engine

coolant, then install it on the pressure tester.

2. Apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm2,

14- 18
psi).

3. Check for a drop in pressure.

4. If the pressure drops, replace the cap.

RADIATOR PRESSURE TESTER

(Commercially available)
Testing

RADIATOR

CAP

SMALL ADAPTOR

(for 32 mm neck, low profile)
1. Wait until the engine is cool, then carefully remove

the
radiator
cap and
fill
the
radiator
with
engine

coolant to the top of the filler neck.

2. Attach the pressure tester to the radiator and apply

a pressure of 93-123 kPa (0.95 - 1.25 kgf/cm2, 14 -

18
psi).

3. Inspect for engine coolant leaks and a drop in pres-

sure.

4. Remove the tester and reinstall the radiator cap.

NOTE: Check for engine oil in the coolant and/or

coolant in the engine oil.

SMALL ADAPTOR

(for 32 mm neck, low profile)

RADIATOR PRESSURE

TESTER

(Commercially available)ProCarManuals.com

Thermostat

Replacement

NOTE: Use new O-rings when reassembling.

ENGINE COOLANT

TEMPERATURE

(ECT) SENSOR

18 N-m (1.8 kgf-m, 13 Ibf-ft)
BLEED BOLT

9.8 N-m (1.0 kgf-m,

7.2 Ibf-ft)

O-RING

Replace.
ECT GAUGE

SENDING UNIT

9 N-m (0.9 kgf-m,

7lbf-ft)

THERMOSTAT

COVER

THERMOSTAT

Install with pin up.

RUBBER SEAL

Replace.

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)ProCarManuals.com

Thermostat ECT Switc h
Testin g
Replac e th e thermosta t i f i t i s ope n a t roo m temperature .
T o tes t a close d thermostat :
1 . Suspen d th e thermosta t i n a containe r o f wate r a s
shown .
2 . Hea t th e water , an d chec k th e temperatur e wit h a
thermometer . Chec k th e temperatur e a t whic h th e
thermosta t firs t opens , an d a t whic h i t i s full y open .
CAUTION : D o no t le t th e thermomete r touc h th e
botto m o f th e ho t container .
3. Measur e lif t heigh t o f th e thermosta t whe n it i s full y
open .
STANDAR D THERMOSTA T
Lif t height : abov e 10. 0 m m (0.3 9 in )
Start s opening : 169-176° F (76-80°C )
Fully open : 194° F (90°C )
THERMOMETE R
THERMOSTAT
Testing
Removin g th e EC T switc h whil e th e engin e
is ho t ca n caus e th e coolan t t o spra y out , seriousl y scald -
ing you . Alway s le t th e engin e an d radiato r coo l dow n
befor e removin g th e EC T switch .
NOTE : Blee d ai r fro m th e coolin g syste m afte r installin g
th e EC T switc h (se e pag e 10-5 ).
1 . Remov e th e EC T switc h fro m th e radiato r (se e pag e
10-2).
2 . Suspen d th e EC T switc h i n a containe r o f wate r a s
shown .
ECT SWITC HTHERMOMETE R
WATER
3. Hea t th e wate r an d chec k th e temperatur e wit h a
thermometer .
CAUTION : D o no t le t th e thermomete r touc h th e
botto m of th e ho t container .
4 . Measur e th e resistanc e betwee n th e A an d B termi -
nal s accordin g t o th e table .
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Water Pum p
Illustrate d Inde x
NOTE :
Use ne w O-ring s whe n reassembling .
Use liqui d gasket , Par t No . 08718-000 1 o r 0871 8 - 0003 .
BLEE D BOL T 6 x 1. 0 m m
ENGIN E COOLAN T 9. 8 N- m (1. 0 kgf-m , 1 2 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
TEMPERATUR E 7. 2 Ibf-ft )
(ECT ) SENSO R
1 8 N- m (1. 8 kgf-m , 1 3 Ibt-ft )
O-RIN G
Replace .
WATE R
PASSAG E
THROTTL E
BOD Y8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
WATE R BYPAS S
I N PIP E
O-RIN G
Replace .
THERMOSTA T
HOUSINGASSEMBL Y
INTAKEMANIFOL D
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
REA R WATE R OUTLE T
Apply liqui d gaske tto th e cylinde r hea dmatin g surface .
CONNECTIN GPIPE
8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
DOWE L
PIN
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft ) O-RING
S
Replace .
8 x 1.2 5 mm22 N- m (2. 2 kgf- m
1 6 Ibf-ft ) WATE
R PUM P
Inspection , pag e 10-1 0
GASKET SReplace.
O-RINGS .Replace. EC
T GAUG E
SENDIN G UNI T9 N- m (0. 9 kgf-m ,
7 Ibf-ft )
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Water Pum p
Inspectio n
1. Remov e th e timin g bel t (se e pag e 6-6 ).
2 . Tur n th e wate r pum p pulle y counterclockwise .
Check tha t i t turn s freely .
3. Chec k fo r sign s o f sea l leakage .
NOTE: A smal l amoun t o f "weeping " fro m th e blee d
hole is normal .
BLEED HOL E
Replacemen t
1. Remov e th e timin g bel t (se e pag e 6-6 ).
2 . Remov e th e lef t camshaf t pulle y an d bac k cove r
(se e pag e 6-19 ).
3 . Remov e th e wate r pump .
NOTE: Inspect , repai r an d clea n th e O-rin g groov e
and matin g surfac e wit h th e cylinde r block .
8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,
1 6 Ibf-ft )
O-RIN GReplace .
DOWE L
PIN
DOWE L PI N
O-RIN G
Replace .
WATER8 x 1.2 5 m m \ PUM P22 N- m (2. 2 kgf-m , 6 x 1. 0 m m
1 6 Ibf-ft ) 1 2 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
4. Instal l th e wate r pum p in th e revers e orde r o f removal .
NOTE :
Keep th e O-rin g in positio n whe n installing .
Clean th e spille d engin e coolant .
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Special Tool s
Ref. No.Too l Numbe r DescriptionQtyPag e Referenc e
A973 X - 04 1 - XXXX X
07PAZ-001010 0
07SAZ-001000 A
07406 - 004000 1 Vacuu
m Pump/Gauge , 0-3 0 in.H g
SC S Servic e Connecto r
Backprob e Se t
Fue l Pressur e Gaug e
11-136 , 11-139 ,
11-140,11-143,11-148,
11-149,11-150,11-155,
11-156, 11-161, 11-162,
11-164, 11-166, 11-167
11-32
11-34
11-120, 11-124
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