1997 HONDA CR-V Oil sensor

22. Remove the radiator caP.
!@ use care when removing the radiatol
cap to avoid scalding by hot coolani or steam.
23. Raise the hoist to full height
24. Remove the front tires/wheels.
25. Remove the guard bar and splash shield.
8 x 1.25 mm2,1 N.m {2.4 kgf,m, 17 lbl ft)6x1.0mm9.8 N.m {1.0 kgf.m, GUARD BAR7.2 tbf.rr)
Loosen the drain plug in the radiator. Drain the
engine coolant (see page 10-51.
Drain the transmission oil or fluid. Reinstall the drain
plug using a new washer lsee section 13 (M/T) or sec-
tion 14 (ly'T)].
Drain the engine oil. Reinstall the drain bolt using a
new washer {see page 8-4).
Bemove the A,/C compressor. Do not disconnect the
!y'C hoses.
SPLASH
26.
27.
28.
29.
ER
lCEB
30. Disconnect the primary heated oxygen sensor (prl-
mary HO2S) connector. then remove exhaust pipe A
'97 - 98 U.S. models (Cslifornia):
PRIMARY HO2SCONNECTOR
GASKETReplace.
SELF-LOCKING NUT8 x 1.25 mm22 N.m 12.2 kgf.m,16 lbf.ftlReplace.
8 x 1.25 mm16 N.m {1.6 kgf.m.12 tbt.ftlReplace.
SELF.LOCKING NUT10 x 1.25 mm54 N.m 15.5 kgf.m,.() tbf.frlReplace.
NUT
'97 - 98 U.S. mod€ls {Except California):'99 - 00 models:
PRIMARY HO2SCONNECTORGASKETSReplace.
GASKETReplace.
SELF.LOCKING8 x 'l.25 mm22 N.m (2.2 kgf m,
16 rbf.ftlReplace.
SELF.LOCKING NUT
8 x 1.25 mm16 N.m 11.6 kgf.m,12 tbt fr)Replace.
10 x 1.25 mm54 N.m 15.5 kgt.m,40 rbt.ftlReplace.
{cont'd)
5-7
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13. Remove the upper radiator hose, heater hose and
water bypass hose.
WATER BYPASS
UPPEBRADIATORHOSE
17
HEATERHOSE
Remove the engine wire harness connectors and
wire harness clamps from the cylinder head and the
intake manifold.
o Four fuel injector connectors
. Engine coolant temperature (ECT) sensor con-
neclor
. Radiator fan switch connector
. Coolant temperature gauge sendlng unlt connec-
tor
. Throttle position sensor connector
. Manifold absolute pressure {MAP) sensor con-
nector
Primary heated oxygen sensor (primary HO2S)
connector
ldle air control (lAC) valve connector
Distributor connector
Remove the spark plug caps and distributor from the
cylinder head.
Remove the cruise control actuator (see section 4).
Support the engine with a jack, then remove the
upper bracket. Make sure to place a cushion
between the oil pan and the iack (see page 6-10).
a
18. Remove the cylinder head cover.
19. Inspect the timing belt (see page 6-9).
CYLINDER
(cont'd)
6-19
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lllustrated Index
OIL CONTROLORIFICE
OIL PUMPOverhaul, page 8-8Removal/lnspection, page 8 IApply liquid gasket tomating surface of engine block.
'99 - 00 models:KNOCK SENSOR31 N.m {3.2 kgf.m.23 lbl.ft)
ENGINE OIL PRESSURE SWITCH18 N.m {1.8 kgtm, 13lbl.ft)1/8 in. BSPT (British StandardPipe Taper) 28 Threads/inch.Use proper liquid sealant.
O-RING
DOWEL PIN
6x1.0mm9.8 N.m (1.0 kgf.m,7.2 tbl.ft)
8 x 1.25 mm24 N.m 12.4 kgf.m,17 tbf.ft)
BAFFLE PLATE
kgtm,7.2 lbtftl
Replace.
6x1.0mm9.8 N.m 11.0 kgf m,7.2 tbf.ftl
OIL PANGASKETReplace.
OIL PANBeferto page 7 22when installing.
6x1.0mm12 N.m 11.2 kglm,8.7 lblftl
WASHEBReplace.
DRAIN BOLT4,1N.m {,1.5 kgf'm,33 lbf ft)Do not overtighten.
'-- /o-RrNG ,/ Reptace.
\^ ./
v,/
U
6x1.0mm9.8 N.rn {1.0
SCREEN
8-3
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'99 - O0 modol3:
6x1.0mm9.8 N.m 11.0 kg{.m,7.2 tbtltl
NESONATOR
6x1.0mm9.8 N.m {1.0 kgf.m,7.2 rbr.ftt
O-RINGReplace.Apply oil to O-RINGbetore installing.
RESONATORCHAMBERBRACKET
GASKETReplace.
IAT SENSOR2:2N.m l2.2kgl.n,16 tbtftl
O.RINGReplace.
l
O.RINGReplace.
8 x 1.25 mm24 N.m 12.4 kgt m,17 tbt frl
INTAKE MANIFOLDReplace it cracked orif mating surfaces areoamageo.
8 x 1.25 mm22 N.m 12.2 kgl.m,16 rbf.ftt
IAC VALVE
8 x 1.25 mm23 N.m (2.3 kgf.m,17 tbf.ft,
INTAKE MANIFOLD
22 N.m 12,2 kgl.m,16 rbfftl
("\"- K\*}Gt
W\qu u
N,1\J 'n\
.a,,-\\J "
G)s
BRACKET
9-3
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PGM-FI System
Tho Maltunction Indicator Lamo(MlL) n6Yor como3 on leven lortwo laconds) rft6r tho ignhion isturnod ON {lll.
Turn th6 ignition switch ON (ll).
- Repair lhort or opcn in thowire between the No. 25METER 17.5 Al fu3e snd thegauge assembly.- Repl.co the No. 25 METER17.5 Al fus€.
ls the low oil pressure light on?
Try to start the engine.
Chock for an opsn in th€ wiro orbulb {MlL line,:1. Turn the ignition switch OFF.2. Connect the ECM/PCM con-nector terminal A18 to bodyground with a iumper wire.3. Turn the ignition switch ON (ll).
Rep.ir open in the wi.osbotween the ECM/FCM lA18land the gaugo rasombly.Roplece the MIL bulb.
ls th6 MIL on?
Substitute a known-good ECM/PCM and rochock. lf rymptom/indication goes eway, replacetho o gind ECM/PCM.
Turn the ignition switch OFF.Inspect the Fl E/M 115 A) tusein the undeFhood fuse/relaybox.
- Repair short in the wirebetween lhe Fl E/M (15 AlfusG and the PGM-Fl m.in.slay.- Roplsce th€ Fl E/M (15 Alfu3€.
Inspect the No. 13 FUEL PUMP(15 A) fuse in the under-dashfuse/relay box.
- Repair short in th6 wirebetween tho No. 13 FUELPUMP 115 A) luse and thePGM-FI main .elay.- ReDlace tho No. 13 FUELPUMP 115 Al tuse.
Engine Gontrol Module/Powertrain Control Module (ECM/PCM) -'98 - 00 Models
NOTE:. lf this symptom is intermittent, check tor:- A loose Fl E/M {15 A) fuse in the under-hood fuse/relay box- A loose No. 25 METER {7.5 A) fuse in the under-dash fuse/relay box- A loose No. 13 FUEL PUMP (15 Alfuse in the underdash fuse/rolay box- An intermiftent short in the wire between the ECM/PCM (A18) and the gauge assem-
- An int€rmiftent short in the wire between the ECM/PCM (C19) and the MAP sensor- An intermiftent short in the wire between rhe ECM/PCM (C28), the TP sensor, theEGR valve lift sensor and/or {uel tank Dressure sensor- A laulty PGM-FI main relay
ECM/PCM CONNECTOR A (32P}
Wire side of female terminals
(To page 11-871
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PGM-FI System
Random Misfire
lF()gool", tftod-' and some or lpiogol throughTo3oti
The scan tool indicates Diagnostic Trouble Code (DTC)
P0300*,, P1300*1 and some of po30t - pO3O4; Randommisfire.
Descriotion
Misfire detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluctuation (cKF) sensorwhich is attached to the crankshaft.lfmisfiring strong enough to damage the catalyst is detected, the MIL will blink during the time of its occurrence, and DTcP0300*', P1300*1 and some of DTCs P03ol through P0304 will be stored. Then, after misfire has ceased, the MtL will comeon,
lf misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and DTcand some of DTCS p0301 through p0304 wi

be stored.NOTE: lf some of the DTCS listed below are stored at the same time as a misfire DTc, troubleshoot those DTcs first. thentroubleshoot the misfire DTC.
P0106, P]128, P1'129; MAp sensorP0171. P0172; Fuet metering
P0505: ldle Control Svstem
P1336, P1337; CKF sensor
P1361, P1362: TDC sensor
Pl381. Pl382: CYP sensor
P1508: IAC valve *1:,97 model*2: '98 - 00 models
Possiblo Caus€
. Fuel pump insufficient fuel pressure, amountofflow. Fuel line clogging. blockage, leakage. Fuel filter clogginga Fuel pressure regulator stuck open. Distributormalfunction
. lgnition coil wire open, leakage. lgnition control module malfunction. Valves carbon deposita Compression lowa Fuel does not meet Owner's Manual spec., lack offuel
Troubleshooting
By test-driving, determine the conditions during which misfire occurs. Depending on these conditions, test in the orderdescribed in the table below.
Possible cause
[ ;;;;- -....
Crankshaft
speed fluctuation
sensor
Fuel
pressureDistributor and
lgnition wirestcMValve
Clearance
Conditionsection 611-178section 23section 23section 6
Only low rpm and load,6)o
Only acceleratingooo
Only high rpm and loado@,a'@
Not specificationG\o@o@
NOTE: lf misfire doesn't recur, some possible causes are fuel that doesn't meet owner's manual spec, lack of fuel, carbondeposits on spark plu9, etc.
11-126
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Fuel Supply System
Fuel Injectors {cont'dl
8. Slide new cushion rings onto the fuel injectors.
9, Coat newO-ringswith clean engine oil,and putthem onthefuel iniectors.
'10. lnsert the fuel injectors into the fuel rail first.
11. Coatnewseal ringswithclean engineoil,and press them into the intake manifold
12. To prevent damage to the O-rings, install the fuel injectors in the fuel rail first, then install them in the intake mani-
fold.
FUEL RAIL
The ill!stration shows'97 -98 models,'99 - 00 modelsare similar.
13. lnstall and tighten the retainer nuts.
14. Connect the vacuum hoses and fuel return hose to the fuel pressure regulator.
15. Connect the PCV valve.
16. Connect the connectors to the fuel injectors, the IAT sensor ('97 - 98 models), and the EVAP purge control solenoid
valve {'97 - 98 models).
Coat a new O-ring with clean engine oil, and install the resonator chamber ('99 - 00 models).
Turn the ignition switch ON (ll), but do not operate the starter. After the fuel pump runs for approximately two seconds,
the fuef pressure in the fuel line rises. Repeat this two or three times, then check whether there is any fuel leakage.
11.
18.
1 1-180
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12. Disconnect the heated oxygen sensor (HO2S) con-
nector, then remove the exhaust pipe A.
GASKETReplace.
HO2S CONNECTOR
NUTReplace.
EXHAUST
SELF.LOCKINGReplace.
GASKETReplace.
Mark reference marks on the joint of the transfer
and the propeller shaft.
8 x 1.25 mmReplace.
Separate the propeller shaft from the transfer
assemDly.
REFERENCE MABKS
14.
15. Remove the cotter pins, and castle nuts. then sepa-
rate the ball ioints from the lower arm (see sectlon
18).
OAMPER PINCH BOLT
CASTLE NUTNUTReplace.
17.
16.
DAMPER FORKFOFKEOLTReplace.
Remove the right damper tork bolt, then separate
right damper fork and damPer.
Pry the right driveshaft out of the differential, and
pry the left driveshaft out of the intermediate shaft
(see section 18).
Pull out the inboard ioint, and remove the right and
left driveshaft (see section 18).
Tie plastic bags over the driveshatt ends. Coat all
precision finished surfaces with clean engine oil
18.
19.
\
{cont'd}
13-9
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