ACURA INTEGRA 1994 Service Repair Manual

NOTE: Use new O-rings and gaskets when reassembling.
CAUTION: Chock for folds 01 scratches on th6 surfac6 of tho gaskot. Replace wilh a new gasket if damaged.
818C1 engino:
INTAKE MANIFOLDReplace il cracked oril mating surfaces are
5 x O.8 rnm6 N.m 10.6 kgl.m,4 tbt.ttl
lI
{,/
?,/
EVAP PURGE CONTROLVALVEdamageo.
IAT SENSOR
5xO.8mm6 N.m 10.6 kgf.m,4 tbf.ftl
INTAKE AIRBYPASS VALVE
IAC VALVEBe carelul notlo oamage.
O.RINGSReplace.
GASKETSReplace.
O.BI GReplace.
BODY
INTAKE MANIFOLDCHAMBER
8 x 1.25 mm23 N.rn 12.3 kgt'm,17 tbf.frl
I x 1.25 mm22 N.m 12.2 kgl.ft,t6 tbt.tt)
BRACKET
8 r 1.25 mm24 N.m {2.4 kgf.h,t7 rbr.ftl
8 x t.25 mfi24 N.m (2.4 lgf.m.17 tbt.ft)I r 1.25 lnm24 N.m 12.4 kgt.m,17 tbt.ftl
8 x 1.25 mm20 .m (2.0 kgt.m,14 tbf.ftl
THROTTLEAODY
FAST IDL€ THERMO VALVEBe carelul not to damage.
HEATER BYPASSPIPE
o-Rt GsReplace.
I x 1.25 mm24 N.m (2.4 kgl.m, 17lbf'ft|
9-3

Exhaust Manifold
Replacement
NOTE: Use new gaskets and seltiocking nuts when teassembling.
GASKETReplace.
€XHAUST MAt{IFOLD
I r 1.25 mm24 N.ln (2.4 kgf.m, l7 lbt.ft)
Z \
i...1%\
/ \-i
8x2417
tr l'A
| 1tr.
/\
t\
I
I1.25 mmN.m {2.4 kgf.m,tbf.ftl
8 x '1.25 mm3l N.m {3.2 kgf.m. 23 lbf.ltlReplace.
10 x 1.25 mm44 .m {4.5 kgl.rh. 33 lbf.ft}
Ss
R
A\

Exhaust Pipe and Muffler
Replacement
NOTE: Use new gaskets and
Bl88l engine:
selflocking nuts when reassembling.
HEAT SHIELDS
6 x 1.0 mm9.8 N.m l1.O kgf.m, 7.2 lbf.ftl
HEAT SHI€LD
SELF-LOCKIIIG NUT
,@\
10 x 1.25 mm33 N.m (3.4 kgt.m,25 tbf.fttReplace.HEATEO OXYGENSENSOR (HO2Sl
44 N.m 14.5 kgt.m,33 rbf.ftlI x 1.25 mm24 N.m 12.4 kgf.m,17 tbl.frl
BRACKET
GASKETSReplace.
SELF-LOCKING NUTS10 x 1,25 mm54 N'm 15.5 kgf'm,40 tbf.ftlReplace.
SELF-LOCKING NUT8 x 1.25 mm16 N.m {1.6 kgf.m,r2 tbt.frlReplace.
I x 1.25 mm22 N.m (2.2 kgl.m, r6lbt.ftlReplace.Tighten the flange nuts in steps,alternating side-to-side.
MUFFLER
EXHAUST
I,
^1
e
e
8 x 1.25 mm22 N.m 12.2 kgt.m, 16 lbf.ftlReplace.Tighten the bolts in steps,alternating side-to-side.
COVER
GASKETReplace.
THREE WAYCATALYTICCONVERTER
COVER
6 x 1.0 mm9.8 N.m l1.O kgf.m, 7.2 lbl.ttl
PIPE TIP
(cont'd)

Exhaust Pipe and Muffler
Replacement (cont'dl
NOTE: Use new gaskets and selt-locking nuts when reassembling.
818C1 engine:
HEAT SHIELOSEXHAUST PIPE
I
h€
TIP
6 x 1.0 mm9.8 N'm {1.O kgt.m, 7.2 lbf.ft)
EXHAUST PIPE B
GASKETReplace.
8 x 1.25 mm22 N.m 12.2 kgf.m, 16 lbf'ftlReplace.Tighten the bolts in steps,alternating side'to-side.
SELF,LOCKING NUT10 x 1.25 mm33 N.m {3.4 kgf.m,25 tbf.frlReplace.
COVERHO2544 N.m {4.5 kgf.m,33 tbf.fr)
I r 1.25 mm24 N.m 12.4 kgf.m,17 lbf.ftl
BRACKET
GASKETSReplace.
GASKETReplace.
EXHAUST PIPE A
COVER
SELF.LOCKING NUTS10 x 1.25 mm54 N.m 15.5 kgl.m,40 lbf.frlReplace.
6 x 1.O mm9.8 N.m (1.0 kgf.m, 7.2 lbt'ft|8 x 1.25 mm22 N.m 12.2 kgf.m, 16 lbl.ftlRepiace.
SELF-LOCKING NUT8 x 1.25 mm16 N.m 11.6 kgf.m,Tighlen rhe flange nuts in sreps, 12lbf.ftlalternating side-to-side. Replace.
MUFFLER
HEAT SHIELD

Cooling
lllustrated Index
Radiator
Replacement ............................... 1 O-4
Engine Goolant Refilling and
Bleeding10-5
Cap Testing ............... 10-6
Pressure Testing ......... 10-6
Thermostat
Rep|acement ............................... 1 O-7
Testing .....1O'7
Water Pump
lllustrated Index ......... . 10-8
Inspection .10-9
Replacement ............................... 1 O-9
10-2

lllustrated Index
@ sy"t". is under high plessure when engine
is hot. To avoid dsnger of relsssing scalding engine
coolant. remove cap only when engine is cool.
Total Cooling System Capacity (lncluding heater and
r€servoirl
Bl8Bl engine:
Mfl: 6.4 | {6.8 US qt, 5.6 lmp qt}
AlTt 6.7 | {7.1 US qt, 5.9 lmp qt}
Bl8Cl engine:
Mfi: 6.7 t {7.1 US qt, 5.9 lmp qt}
CAUTION: lf any engine coolant spills on paint€d por-
tions ot the body, rinse it ofl immediately.
NOTE:
a Check all cooling system hoses for damage. leaks or
deterioration and replace if necessary.
a Check all hose clamps and retighten if necessary.
a Use new O-rings when reassembling.
CONDENSERFAN SHROUD{soe soction 221
6 x 1.O mm7 N.m (O.7 kgt.m. 5 lbf.ftl
ATF COOLERHOSES{81881 6ngine)
RADIATOREngine coolant refilling and bleeding,page 10-5Leak test, page 'l0-6
Inspect soldered joints andseams for leaks.Elow out dirt from betweencore fins with compressed air.lf insects, etc., are clogging.adiator, wash them off withlow pressure water,
S!
P
R
U
COOLANTRESERVOIR
5x0.8mm4.4 N.m (O.45 kgf.m,3.3 lbl.fr)
M/T: Manual t.anamiaaionA/T: Automatic t.ansmiasionATF: Automatic t.ansmission fluid
\*
*)
FAN SHROUD
10-2

ENGINE COMPARTMENT HOSE CONNECTIONS:
Bl88l engine:FAST IDLETHERMOVALVE
THERMOSTATHOUSIITGIDLE AIR CONTROLIIAC} VALVE
O'RINGReplace.
BREATHER PIPE
O-RINGReplace.
HEATER HOSES
818C1 engine:
ENGINE OILCOOLER
IAC VALVE
HEATER BYPASSPIPE
FAST IDLETHERMOVALVE
THERMOSTATHOUSING
BREATHER PIPE
HEATEB HOSES
10-3

Radiator
Replacement
1.Drain the engine coolant.
Remove the upper and lower radiator hoses, and ATF
cooter noses.
Disconnect the fan motor connectors.
Remove the radiator upper brackets, then pull up the
radiator.
5. Remove the fan shroud assemblies and other parts
from radiato..
lnstall the radiator in the reverse order of removal:
NOTE:
a Set the upper and lower cushions securely.
a Fill the radiator and bleed the air.4.
UPPER BRACKETAND CUSHTOl{
RADIATOR CAP
t
e
6 x l.O mm9.8 N.m (1.O kgt.m,7.2 rbf.ft)
6 x 1.0 mm9.8 il.m 11.O kgt'm,7.2 lbr.ftl
FAN MOTOR
CUSHION
SHROUDO-RINGReplace.
6 x 1.0 mm9.8 N.m ('l.O kgl.m,7.2 tbl.ttl
DRAIN PLUG
LOWER RADIATORHOSE

@ ne-oving the radiator cap while the engine
is hot can cause the engine coolant to splay out, seri-
ously scalding you. Always let the engine and radiatol
cool down betore removing the radiator cap.
CAUTION: When poudng engine coolant, be sure to shut
the relay box lid and not to let coolant spill on the elec-
tlical pans or the paint. ll any coolant spills, rinse it otf
immediately.
1. Slide the heater temperature control lever to maxi-
mum heat.
Make sure the engine and radiator are cool to the
touch.
2. Remove the radiator cao.
3. Loosen the drain plug on the bottom of the radiator,
and remove the drain bolt from the enoine block. Let
the coolant drain out.
ENGINE DRAIN BOLT78 N.m {8,O kgt.m, 58 lbt.ftlApply liquid gasker tobolt thread when installing.WASHERReplace.
5.
Remove the reservoir from its holder by pulling it
straight up. Drain the coolant, then put the reservoir
back in its holder.
When the coolant stops draining, apply liquid gasket
to the drain bolt threads, then reinstallthe bolt with
a new washer. Tighten it securely
6. Tighten the radiator drain plug securely.
7. Mix the recommended antifreeze/coolant with an
equal amount of water in a clean container.
NOTE:
. Use only HONDA-RECOMMENOED antifreeze/
coolant.
a For best corrosion protection, the engine coolant
concentrations must be maintained year-round at
50% MINIMUM. Coolant concentrations less than
50% may not provide sufficient protection
against corrosion or freezing.
CAUTION:
a Do not mix ditterent blands ot anti-freeze/
coolants.
a Do not use additional rust inhibitois or anti-rust
products; they may not bs compatibl€ with the
recommgndsd engins coolant.
Engin€ Coolant Retill Capacity: including reservoir
{0.6 t (0.6 US qt, 0.5 lmp qt)).
81881 engine:
MlTt 4.4 | (4.6 US qt, 3.9 lmp qr)
Afft 4.7 [ (5.O US qt,4.1 lmp qt]
Bl8Cl engine:
Mnt 4.7 | (5.0 US qt.4.1 lmp qt)
8. Pour coolant into the radiator up to the base of the
filler neck.
9. Loosen the bleed bolt on top of the engine. Tighten
it again when coolant comes out in a steady stream
with no bubbles.
BLEED BOLT
1O. Refill the radiator to the base of the tiller neck. Put
the cap on the radiator. and tighten it only to the tirst
stop, Stan the engine and let it run until it warms
up (the radiator cooling fan comes on at leasttwice).
11. Turn oft the engine. Check the level in the radiator,
and add coolant it needed. Install the radiator caD,
and tighten it fully.
'1 2. Fill thereservoirto the MAX mark. lnstallthe reser-
voir cap.
9.8 N.m (1.O kgl.m, 7.2 lbf.ftl
Engine Coolant Refilling and Bleeding
10-5

Radiator
Cap Testing
1.Remove the radiator cap, wet its seal with engine
coolant, then install it on the pressure tester.
Apply a pressure ol:
93- 123 kPa(O.95- 1.25 kgJ/cm', 13.5- 1 7.8 psi)
Check for a drop in pressure.
2.
3.
PRESSURE TESTER
Pressure Testing
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.
Attach the pressure tester to the radiator and apply
a pressure of:
93- 1 23 kPa(O.95- 1.25 kgf/cm,. 13.5-17.8 psi)
Inspect for engine coolant leaks and a dfop in
pressure,
Remove the tester and reinstall the radiator cap.
NOTE:
a Check for engine oil in the engine coolant and/or
coolant in the engine oil.
a Check for ATF in the engine coolant and/or
coolant in the ATF (A/T).
10-6