coolant level ACURA INTEGRA 1994 Service Repair Manual

@ 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

ldle Control System
Fast ldle Thermo Valve
DEscliptlon
To prevent erratic running when the engine is warming
up, it is n€cessary to raise the idle speed. The fast idle
thermo valve is controlled by a thermowax plunger, When
the engine is cold. the engine coolant su.rounding the
thermowax contracts the plunger, allowing additional air
to be bypassed into the intake manifold so that the en-
gine idlss taster. When the engine reaches operating tem-
peratur€, the valve closss, reducing the amount of air
bypassing into the manifold.
FAST IDLE THERMOVALVE
AIN EYPASS VALVE
Inspaction
NOTE: The tast idle thermo valve is factory adiustsd;
it should not be disassombl€d.
1. Remove the intake air duct from the throttlg body.
2. Stan the engine.
3. Put your finger over ths lower port in throttle body
and make sure that there is 8ir flow with tho engine
cold (engine coolant temperatute below 86oF,
300c).
a lf not,
retest.
leplace the fast idle thermo valvs and
4.
o-Rr{GsReplace
llo kgf.m, 7 lbt.trl
Start the engine. Hold the sngine at 3.0OO rpm with
no load (A/T in I or @ position, M/T in neutral]
until the radiator fan comes on, then let it idl6.
Check thst valve is completely closed. lt not, air suc-
tion can be telt at the lower Don in the throttle body,
a It any suction is felt, the valve is leaking Check
engine coolant level and for air in tho engine
coolant system (see section 1O). ll OK, rsplace
the fast idle thermo valve and rechock.
11-94

Troubleshooting
Symptom Chart
NOTE: Check the engine coolant level and allow the engine to warm up before troubleshooting.
SYMPTOMREMEDY
Hot air flow is low.Blower motor runs, but one ol more
speeds are inoperative.
Follow the tlowchart (see page 21-9).
Blower runs properly.Check for the following:. Clogged heater duct. Clogged heater outlet. Incorrect door position
No hot air JlowBlowel motor does not run at all.Follow the flowchart (see page 2l-l1l
Blower motor runs.Check for the following:. clogged heatet duct. Clogged blower outlet. Clogged heater valve. Faultv air mix door. Heater valve cable sdjustment lsee page 2'l-271
. Air mix control cable adjustment (see page 21-27)
. Faulty thermostat (see section lO)
. Clogged evaporator (with air conditioning). Frozen evaporator (with air conditioning)
Mode control motor does not run, or one or more modes are
inooerative.
Follow the flowchart (see page 21-14).
Recirculation control door does not change between FRESH
and RECIRCULATE.
Follow the flowchart (see page 21- 17).
21-A

Gauge Assembly
Component Location Index
CAUTION:
a All SRS electrical wiring harnosses are cov€rod withyellow insulation.
a Bofore disconnecting any prn ot th€ SRS wire har-ness, connect tho short connector(sl.a R€place th6 entirs affGcted SRS halne$ assembly ifit has an open circuit o? damaged wiring.
SRS MAIN HARNESS{Cov.r6d with yollow inrularionl
GAUGE ASSEMBLYGauge Location Index, page 23-114Indicator Location Index, page 23-1 14Terminal Location Index, page 23-114Bulb Location. page 23-'l 15Disassembly. page 23-1 19Removal, page 23-118
FUEL GAUGE SENDING UNtTTest, page 23'124Repfacemenr, page 23-124
VEHICLE SPEEO SENSOB IVSS}Test, page 23-120fnput Test. page 23-120Repfacement, page 23-122
PARKITTG BRAKE SWITCHTest, page 23-127
BRAKE FLUID LEVEL SWITCHTesr, page 23-127
EI{GINE OIL PBESSURE SWITCHTest, page 23-122
ENGINE COOLANT TEMPERATURE IECTI GAUGESENOING UNITTest, page 23-126
(C61'ios tho SBS indicator signal)
23-113