oil pressure HONDA INTEGRA 1998 4.G Workshop Manual

Gylinder Head
Removal (cont'dl
Remove the fuel return hose and positive crankcase
ventilation (PCV) hose.
Remove the brake booster vacuum hose, water
bypass hose and vacuum hose.
ltosE
VACUUM HOSE
6-18
10.
9.
11.
Remove the throttle cable,
Remove the throttle control cable (automatic trans-
mission only).
NOTE:
. Take care not to bend the cable when removing
it. Always replace any kinked cable with a new
one.
. Adjust the throttle cable and throttle control
cable when installing (s€e section 11 and 14).
THROTTLE CONTROLCABLE
ADJUSTING NUT
Remove the engine wire harness connectors and
wire harness clamps f.om the cylinder head and the
intake manifold.
Four fuel injector connectors
Intake air temperature (lATl sensor connector
Engine coolant temperature {ECT) sensor con,
nector
TDC/CKP/CYP sensor connector
lgnition coil connector
ECT gauge sending unit connector
Throttle position (TP) sensor connector
Manifold absolute pressure (MAP) sensor con-
necto r
ldle air control (lAC) valve connector
EVAP purge control solenoid valve connector
Crankshaft speed fluctuation (CKF) sensor con-
nector
a
a
a
a
a
a
a
a
ADJUSTING

IJ
Engine Lubrication
Speciaf Tools ........ ........8-2
lllustrated lndex ........ ....8-3
Engine Oil
Inspection ...................... 8-6
Replacement .....,................................. 8-6
Oil Filter
Replacement ....................................... 8-7
Oil Pressure
Testing ......8-9
Oil Jet
Inspection
(818C1,818C5 engines only) ......... 3-9
OilPump
Overhaul .... 8-10
RemovaUlnspection/lnstallation ...... 8-1 1
tr---rl
r-"- i

lllustrated Index
JCAUTION: Do not overtighton the drain plug.
81881 engine:
WASHER
OIL PAN
GASKETReplace.
OIL SCREEN
6 x 1.0 mm11 N'm 11.1 kgt.m,I lbt.ft)
NOTE:
a Use new O-rings when reassembling.
a Apply oil to O-rings before installation.
. Use liquid gasket, Pan No. 08718 - 0001 or 08718 -
0003.
a Clean the oil pan gasket mating surfaces before
installing it.
6 x 1.O mm12 N'm {1.2 kgf.m,8.7 lbf'fr)
/I
,trg
6 x 1.0 mm11 N.m {1.1 kgf.m, 8 lbl.ft}
./
GASKETReplace.
BAFFLE PLATE
8 x 1.25 mm24 N.m 12.4 kgl.n,17 tbf.tt)ENGINE OIL PRESSUREswtTcH18 N.m (1.8 kgf.m. 13 lbf.ft)1/8 in. BSPT (British StandardPipe Taper) 28 Threads/inch-Use proper liquid sealant.
6 x 1.O mm1 l N.m {1.1 kgt.m, I lbf'ft}OIL PUMPOverhaul, page 8-10lnspection page, 8-11Apply liquid gasket toblock mating s(]lrface-
(cont'd)
8-3

CAUTIONT Do not overtighten the drain plug,
B18C5 engine:
DRAIN PLUG
NOTE:
. Use new O-rings when reassembling.
. Apply oilto O-rings betore installation.
. Use liquid gasket, Part No. 08718 - 0001 or 08718 -
0003.
. Clean the oil pan gasket mating surfaces before
installing it.
WASHERReplace.
OIL PAN
GASKEIReplace.
4,r N.m lia.s kgt m, 33 lbf ftlDo not overtighten.
6x1.0mm12 N.m {1.2 kgI.m,8.7
OIL JET BOLT16 N.m {1.6 kgtm, 13lbf.ttl
\
7.2 tbl.ttl
OIL JETBe carelul not to damage.Inspect;on, page 8 9AAFFLE PLATE
6x1.0mm9.8 N.ft 11.0 kgl.m, 7.2 lbt.ftl
O.RINGReplace.
OIL SCREEN
ENGINE OIL COOLERCENTER BOLT73 N.m {?.5 kgf.m,5a lbt.ftl
ENGINE OIL FILTERReplacement, page I7
Replace.
OIL CONTROL
6x1.0mm9.8 N.m lr.0 kgt ft,7.2lbtftl
GASKETReplace.
8 x 1.25 mm2,1 N.m (2.1 kgt m, 17 lbf.ftl
DOWELPINS
6x1.0mm9,8 N.m 11.0 kgtm,7.2lbf.ftl
ORIFICEClean.
ENGINE OIL PRESSUREswrTcH18 N.m 11.8 kgt.m, 13 lbtft)1/8 in. BSPT (British StandardPipe TaDer) 28 threads/inch.Use proper liquid gasket.
OIL PUMPOverhaul, page 8-10Removal/lnspection/lnstallation, page 8 1 1Apply liquid gasket to matingsurface of the engine block.

Oil Pressure
Testing
lf the oil pressure warning light stays on with the enginerunning, check the engine oil level. It the oil level iscorrect:
Connect a tachometer.
Remove the oil pressure switch and install an oil pressure gauge.
Start the engine. Shut it off immediately if the gaugeregasters no oil pressure. Repair the problem beforecontinuing.
Allow the engine to reach operating temperature (fan
comes on at least twicel. The pressure should be:
Engine Oil Pressure:
At ldle: 70 kPa {O.7 kgficmr, tO psil
minimum
At 3,OOO rpm: 34O kPa (3.5 kgf/cmr, 50 psil
minimum
a lf oilpressure is within specifications, replace theengine oil pressure switch and recheck.
a lf oil pressure is NOT within specifications,rnspect the oil pump (see page g-11).
l
2.
Oil Jet
lnspection(818C1, 818C5 engines
only)
1. Remove the oil jet (see pages 8 4 or 8 5) and inspectit as follows.
a Make sure rhat a 1 .1 mm (O.04 in) diameter drillwillgo through the nozzle hole fl.2 mm (O.O5 in)diameter).
a Insert the other end of the same 1 .1 mm {0.O4in) drill into the oit intake (1.2 mm (0.05 in)diameter).
Make sure the check ball moves smoothly and hasa stroke of approximately 4.0 mm (O.16 in).a Check the oil jet operation with an air nozzle. ltshould take at least 2OO kPa 12.O kg|lcm2, 2gpsi) to unseat the check ball.
NOTE: Replace the oiljet assembly if the nozzleis damaged or bent.
2. Mounting torque is critical. Be very precise when in-stalling.
Torque: 16 N.m (1.6 kgf.m, 12 lbf.ftl
1.2 mm (0.05 inl
16 N.m {1.6 kgf'm, 12 lbf.ftl
8-9

Cap Testing
1.Remove the radiator cap, wet its seal with engine
coolant, then install it on the pressure tester.
Apply a pressure of:
93 123 kPa(0.95 1.25 kgf/cm', 13.5 17.8 psi)
Check for a drop in pressure.
2.
3.
AOAPTOR(for small cap)
PRESSURE TESTER
Radiator
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 ot the filler neck.
2. Attach the pressure tester to the radiator and apply
a pressure of:
93 123 kPa(O.95- 1.25 kgf/cmr, 13.5-'17.8 psi)
3. Inspect lor engine coolant leaks and a drop inpressure.
4. Remove the tester and reinstall the radiator cap.
NOTE:
a Check for engine oil in the engine coolant and/orcoolant in the engine oil.a Check for ATF in the engine coolant and/orcoolant in the ATF {A/T}.
\
PRESSURE TESTES
AOAPTOR{for small cap)

I
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il
Troubleshooting
ECM CONNECTOR {31P)
Engine Control Module Terminal Arrangement (cont'd)
ECM CONNECTOR C {31P)
235srsscs1112t31515t71A19
2A
Wire side of lemale terminals
NOTE: Standard battery voltage is 12 V.
TerminalnumbercolorTerminal namoD6scriptionSignal
1BLU/REDCKF P (CKF SENSOR P SIDE)Detects CKF sensor.With engine running: pulses
28LUCKP P (CKP SENSOR P SIDE)Detects CKP sensor.With engine running: pulses
3GRNTDC P {TDC SENSOR P SIDE)Detects TDC sensor,With engine running: pulses
YELCYP P (CYP SENSOR P SIDE)Detects CYP sensor,With engine running: pulses
5BLU/REDACS (AJC SWITCH SIGNAL)Detects A,/C switch signal.With A,/C switch ON: 0 VWith A,/C switch OFF: battery voltage
6BLUA/VHTSTS (STARTEB SWITCHSIGNAL)
Detects starter switch signal.With staner switch ON: battery voltageWith starter switch OFF: 0 V
7BRN,AiVHTSCS (SERVICE CHECKSIGNAL)Detects service check connectorsignal (the signalcausing a DTC;ndication).
With the co n nector con nected: 0 VWath the connector disconnected: about 5 V
8GRNAVHTK LINESends and receives OBD ll scantool and PGM tester signal.With ignition switch ON (ll): about 5 V
9YELFAS lFEEDBACK AT SIGNAL)Sends feedback signal for theTCM,At idle: about 5 VDuring shifting: momenlary change to 0 V
10WHT/BLU
VBU (VOLTAGE BACK UP)Power source for the ECMcontrolcircuit,Power source for the DTC
Battery voltage at all times
t1WHT/REDCKF M (CKF SENSOR I\4 SIDE)Ground for CKF sensor.
12BLUI/E LCKP M (CKP SENSOR M SIDE)Ground for CKP sensor.
WHT/BLUTDCM (TDC SENSOR M SIDE)Ground tor TDC sensor.
14CYPM (CYP SENSOR M SIDE)Ground for CYP sensor.
15*.BLU/BLKVTP SW (VTEC
PRESSUFE SWITCH)Detects VTEC pressure switchsr9nal.
With engine at low rpm:0 VWith engine at high rpmlbattery voltaqe
161,GRN
PSPSW (P/S OILPRESSURE SWITCH)Derecls PSP switch signal.At idle with steering wheel in straight aheadpositioni 0 VAt idle with steering wheelat full lock: batteryvoltage
17WHT/REDALTF (ALTERNATOR FRSIGNAL)Detects alternator FR signal.With fully warmed up engine running:0 V battery voltage (depending onelectrical load)
18ORNVSS (VEHICLE SPEEDSENSORiDetects VSS signal.With ignition switch ON (ll) and lrontwheels rotating: cycles 0 V- 5 V
19*3BLUAT CHK (A/T FI DATA LINE)Detects TCM data signal.With ignition switch ON (ll)i pulses
21*LT GRNBARO OUT (SAROMETRIC
SENSOR OUTPUT S!GNAL)Sends barometric sensor outputsrgnal,With ignition switch ON (ll): about 3 V(depending on barometric pressure)
27 x3GRYAFSB (A"/T FI SIGNAL B)Detects retard signal from theTCM,At idle: about 5 VDuring shifting: momentary changeto0V
28+1GRN/8LUA+SA (A/T FI SIGNAL A)Detects retard signal from theTCM.At idle: about 5 VDuring shifting: momentarV changeto0V
29+3LT GRN/BLKATPPN (A/T GEARPOSITION SWITCH)Detects A,/T gear position switchsrgnal-In E orE positionr 0VIn anv other position: battery voltage
*1: USA*2:818C1 engine*3: A/T*4: 818C1, 818C5 engines

I
I
It:
PGM-FI System
Engine Control Module {ECMI
,i
I
{
ili
NOTE: lf this svmotom is intermittent, check for a loose fuse No. 25 METER (7.5A) in the under_
dash fuse/relay box, a ooor connection at ECM terminal A18, or an intermittent open in the
GRN/ORN wire between the ECM (A18) and the gauge assembly.
Wire side of female terminals
I
The Mellunction Indicator Lamp(MlLl never com€3 on leven foltwo secondsl alter ignition islurn6d ON lll).
Turn the ignition switch ON (lli.
- Repair short or open in th€wire betwe€n No. 25 METER{7.5 A}fuse and gauge assem-bty.- ReDlaco No.25 METER 17.5 A)fuse.
ls the low oil pressure light on?
Try to start the engine,
Check for an open in ih6 wires
IPG lines):1. Turnthe ignition switch ON (ll).
2. Measure voltage betweenbody ground and ECM connec-tor terminals A10 and A23 indi-vidually.
Chock for an open in the wire orbulb:1. Turn the ignition sw;tch OFF.2. Connectthe ECM connector terminal 418 to body ground with
3. Turn the ignition switch ON (ll).
Repair open in the wire(slbetween ECM and G101 (located
at thermostat housingl that hadmore than 1.0 V.
ls there less than 1.0 V?
Substitute . known-good ECMand .echeck, lf symptom/indica-tion goes away, replace the origi-nalECM.
- R€pair open in the wiresb€tweon ECM {A18land gaug€
ess€mbly.- Replace the MIL bulb.
ls the MIL on?
Substitute a known-9ood ECMand rech6ck. It symptom/indica-tion goes away, repbce the origi-nal ECM.
ECM CONNECTOR A {32P)
15 16 17 18 19
r 2 3 al 15 Ga910 11
12 ,, t5 16 1tt920/22 23 2a
25 26 211184tt-MILJUMPER(GRN/ORN) I WIRE

PGM-FI System
Random Misfire
1T0-500 1 a nd Fo-30ittrrousFF0304-lThB scan tool indicates Diagnostic Trouble Code {DTC) P0300 and some of
P0301 - P0304: Random misfire.
Doscription
Misfir; detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluciuation sensor which
is attached to the crankshsft.
lf misfiring strong enough to damage the catalyst is detected, the MIL will blink during iho time of its occurrence, and DTC
p0300 and some of DTCS p0301 through P0304 will be stor€d. Then, after misfire has ceased, the MIL will come on.
lf misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and DTC
PO3O0 and some ot DTCS P0301 through P0304 will be stored
NOTE: lJ some of the DTCS listed below are stored at the same time as a misfire DTC, troubleshoot those DTCS first. then
troubleshoot the misfire DTC.
P0171, P0172: Fuel metering
P0505: ldle Control SYstem
P1361, P1362: TDC sensor
P1381. P1382: CYP sensor
P1508: IAC valve
Possible Cause
. Fuel pump insufficient fuel pressure. amount of flow
. Fuel line clogging, blockage, leakage
. Fuel {ilter clogging
a Fuel pressure regulator stuck open
. Distributormallunction
o lgnition coil wire open, leakage
. lgnition control module malfunction
. Valves carbon deposit
a Compression low
. IAC valve malfunction
. Fast idle thermo valve malfunction
o Fuel does not meet Owner's Manual spec., lackotfu€l
. VTEC system malfunction
Troubleshooting
By test-driving, determine the conditions during which misfire occurs. Depending on these conditions, test in the order
described in the table below.
Fuel
pressure
Distributor
and lgnition
wires
tcMIAC ValveValve
Clearance
wEc
System
11118section 23section 231 1- 100section 6section 6
Only low rpm and
loao@o@@
Only acceleratingo@o
Only high rpm and
loado@@@o
Not specificationo@@@@
NOTE: lf misfire doesn't recur, some possible causes arefuel that doesn't meet owner's manual spec, lackoffuel, carbon
deposits on spark plug, etc.
11-78

Before connecting a new fuel tube/quick-connect fitting
assembly, remove the old retainer from the mating pipe.
With rhetabs pulled
apart, Pullthe retaineroff
New FUEL TUBE/OUICK.CONNECTFTflNG ASSEMBLY
3. Align the quick-connect fittings with the pipe, and
align the retainer locking pawls with the connector
grooves. Then press the quick connect fittings onto
the pipe until both retainer pawls lock with a click-
Ing souno.
NOTE: lf it is hard to connect, put a small amount of
new engine oil on the pipe end.
Connection with new retainer:
5.
Make sure the connection is secure and the pawls
are lirmly locked into place; check visually and by
pulling the connector.
RETAINER
Reconnect the battery negative cable, and turn the
ignition switch ON (ll) the fuel pump wjll run for about
two seconds, and fuel pressure will rise. Repeat two
or three times, and check that there is no leakage in
the fuel supply system.
11-117