1998 HONDA CR-V idle control

Intake Air System
System Description
The system supplies air for all engine needs. lt consists of the intake air pipe, Air Cleaner, intake air duct, Throttle Body
(TB), ldle Air Control (lAC) Valve, fast idle thermo valve, and intake manifold. A resonator in the intake air pipe provides
additional silencing as air is drawn into the system.
INTAKE MANIFOLD
YEL| - - Fiom PGM'FI
BLK T MAIN RELAY
IDLETHERMO
lJ- _iuo'u'j"'
INTAKEAIR DUCT
vaRtousSENSORS
FESONATON
THROTTLEBODY (TB)
1 1-193
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Emission Control System
System Description
The emission control system includes, a Three Way
Catalytic Converter {TWC), Positive Crankcase Ventilation
(PCV) svstem and Evaporative Emission (€VAP) Control
system. The emission control system is designed to meet
federal and state emission standards.
Tailpipe Emission
Inspsction
!@ Do not smoke during this procsdura. Keep
any open tlame away from your work area.
1. Start the engine. Hold the engine at 3,000 rpm with
no load (in Park or neutral) until the radiator fan
comes on, then let it idle,
Connect a tachometer.
Check and, if necessary, adjust the idle speed, (see
page 11-169, 170).
Warm up and calibrate the CO meter according to the
meter manufacturer's instructions.
Check idle CO with the headlights, heater blower, rear
window defogger, cooling fan, and air conditioner off.
(Canada) Pull the parking brake lever up. Start the
engine, then check that the headlights are off.
CO meter should indicate 0.1% maximum.
4.
Three Way Catalytic Converter (TWCI
DsscriDtion
Three Way Catalytic Convertsr lTwcl:
The Three wav Catalvtic Converter (TWC) is used to
convert hydrocarbons (HC), carbon monoxide (CO), and
oxides of nitrogen (NOx) in the exhaust gas to carbon
dioxide (COr), dinitrogen (Nr) and water vapor,
{cont'd)
1 1-199
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Emission Control System
Positive Crankcase Ventilation (PCV) System (cont'dl
2. At idle, make sure there is a clicking sound from the
PCV valve when the hose between the PCV valve
and intake manifold is lightly pinched with your fin-
gers or pliers.
'97 - 98 models:
'99 - 00 modelsi
lf there is no clicking sound, check the PCV valvegrocrmet for cracks or damage, lf the grommet is
OK, reDlace the PCV valve and recheck.
Gently pinch here.
Gently pinch here.
11-202
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Symptom-to-Com ponent Chart
Hydraulic System (cont'd)
NOTES
See flushing procedure, page l4-264 and 265,
BSet idle rpm in gear to specified idle speed. lf still no good, adjust motor mounts as outlined in enginesection of this manual.
clf the large clutch piston O-ring is broken, inspect the piston groove for rough machining.
Dlf the clutch pack is seized or is excessively worn. inspect the other clutches fot wear, and check the orificecontrol valves, CPC valve, and linear solenoid for free movement.
lf the linear solenoid is stuck, inspect the clutches for wear.
lf the 1-2 shift valve is stuck closed. the transmission will not upshift. lf stuck open, the transmission hasno lst gear.
Hlf the 2nd orifice control valve is stuck, inspect the 2nd and 3rd clutch Dacks for wear.
lf the 3-4 orifice control valve is stuck, inspect the 3rd and 4th clutch packs for wear.
Jlf the clutch pressure control valve is stuck closed. the transmission will not shift out of lst gear.
Klmproper alignment of main valve body and torque converter housing may cause ATF pump seizure. Thesymptoms are mostly an rpm-related ticking noise or a high-pitched squeak.
Llf the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump and differentialpinion shaft. lf both are OK and no cause for the contamination is found, replace the torque converter.
Mlf the lst clutch feed pipe guide in the end cover is scored by the mainshaft. inspect the ball bearing forexcessive movement in the transmission housing. lf oK, replace the end cover as it is dented. The o-rinounder the guide is probably worn.
N' Replace the mainshaft if the bushing for the 4th feed pipe is loose or damaged, lf the 4th feed pipe is darrFaged or out of round. replace the end cover.' Replace the mainshaft if the bushing for the l st feed pipe is loose or damaged. lf the 1st feed pipe is dam-aged or out of round, replace it.
oA worn or damaged sprag clutch is mostly a result of shifting the transmission in E!. E, or E positionwhile the wheels rotate in reverse. such as rocking the vehicle in snow.
PInspect the frame for collision damage.
lnspect for damage and wear:
l. Reverse selector gear teeth chamfers.
2. Engagement teeth chamfers of countershaft 4th and reverse gear.
3. Shift fork for scuff marks in center.
4. Differential pinion shaft for wear under pinion gears.
5. Bottom of 3rd clutch for swirl marks.
Replace items 1, 2, 3. and 4 if worn or damaged. lf transmission makes a clicking, grinding, or whirring noise,also replace mainshaft 4th gear, reverse idler gear, and countershaft 4th gear in addition to 1,2, 3, or 4.lf differential pinion shaft is worn, overhaul differential assembly, replace ATF strainer, and thoroughly cjeantransmission, flush torque converter. cooler, and lines,lf bottom of 3rd clutch is swirled and transmission makes gear noise. replace the countershaft and final drivenoear,
Be very careful not to damage the torque converter housing when replacing the main ball bearing. you
may also damage the ATF pump when you torque down the main valve body. This will result in ATF pumpseizure if not detected. Use the Drooer tools.
SInstall the main seal flush with the torque converter housing. lf you push it into the torque converterhousing until it bottoms out, it will block the fluid return passage and result in damage.
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r] REVERSE IDLER GEAR SHAFT/HOLDER'A N€EDLE BEARING
..] TRANSMISSION HOUSING
al TRANSMISSION HOUSING OIL SEAL Replace.g SET BING.80 mm Selecrive part
O REVERSE GEAR COLLABE couNTERSHAFT REVERSE GEAB
.9,] NEEDLE BEARINGi9 LOCK WASHER Replace..1!i REVERSE SHIFT FORKO REVERSE SELECToRiJ. REVERSE SELECTOR HUBii' COUNTERSHAFT 4TH GEAR.14 NEEDLE BEARINGiD D|STANCE coLLAR,28 mm Selective part(i3 COUNTERSHAFT 2NO GEABi7-] THRUST NEEDLE BEARING(10 COUNTERSHAFT 3RD GEAR(9 NEEDLE BEARINGE9 COUNTERSHAFI3RD GEAB COLLAR.li THRUST NEEDLE BEARING.?) SPLINEO WASHER,,O 3RD CLUTCH ASSEMBLY
€1 O-RING Beplace.i23 COUNTERSHAFT
4i SHIFT CONTROL SOLENOID COVER
?Z] HARNESS CLAMP BRACKET
?9] SHIFT CONTROL SOLENOID VALVE A/B ASSEMBLY
8 HARNESS CLAMP BRACKET
GI SHIFT CONTROL SOLENOID VALVE FILTER/GASKET
(4 MAINSHAFT 2ND GEARi49 NEEDLE BEARING
@ THRUST NEEDLE BEARING(49 MAINSHAFT
@r SEAL|NG R|NG,35 mm
O SEALING RING,29 mm
@ NEEDLE BEARING
.49 SET RING
€) lST.HOLD CLUTCH ASSEMBLY
O o-RING Replace.6E THRUST WASHER
€9 THRUST NEEDLE BEARING
6' NEEDLE EEARING
€ir SUB-SHAFT 4TH GEAR
6 THRUST NEEDLE BEARING
@ SUB.SHAFT 4TH GEAR COLLAR@ sUB-sHAFf
6I NEEDI-E B€ARING STOP
@ NEEDLE BEARING(6t ATF GUIDE CAP Replace.(64 TRANSMISSION HANGEB
@ BREATHER CAP
i@ MAINSHAFT SPEED SENSOR
6i O-RING Replace.
6D REVERSE IDLER GEAR
@r DOWEL PlN, 14 x 25 mm.6d SNAP RINGS
QlI SUB.SHAFT TRANSMISSION HOUSING BEARING
E) MAINSHAFT TRANSMISSION HOUSING BEABING.2, COUNTERSHAFI TRANSMISSION HOUSINGBEARING
@[E
t,n9t0@)@),lD
04
@
@@:.ro)
ai
Replace-SNAP RINGTHRUST WASHEBTHRUST NEEDLE BEARINGMAINSHAFT 4TH GEARNEEDLE BEARINGSTHRUST NEEDLE BEARINGMAINSHAFT 4TH GEAB COLLAR2NO/4TH CLUTCH ASSEMBLYO-RING Replace.THRUST WASHER,36.5 x 55 mm Selective partTHRUST NEEOLE BEARING
DOWEL PlN, 14 x 25 mmCONNECTOR BRACKETATF MAGNETDOWEL PlN, 14 x 20 mmTRANSMISSION HOUSING GASKET Replace.DIFFERENTIAL ASSEMBLYDOWEL PlN, 10 x 12 mmO-RING Replace.TRANSFER ASSEMBLYTOROUE CONVERTER HOUSING OIL SEAL Replace.TOROUE CONVERTER HOUSING
TOROUE SPECIFICATIONS
Bolt/Nut No.Torque ValueSizeRgmarks
6A
6B
10A
12 N.m (1.2 kgf.m,8.7 lbf.ft)
14 N.m (1.4 kgf.m, 10 lbift)
44 N.m (4.5 kgf.m,33 lbf.ft)
6x 1.0 mm
6x 1.0 mm
10 x 1.25 mm
14-177
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oatl,6
@!.,
ao6l
@o@@@@@o@@@)@@@@@@@@@@)
@@@@)@@@@@@@
REVERSE IDLER GEAR SHAFT,/HOLDERNEEOLE BEARINGTRANSMISSION HOUSINGTRANSMISSION HOUSING OIL SEAL R€place.SET RING,80 mm Selective part
REVERSE GEAR COLLARCOUNTERSHAFT REVERSE GEARNEEDLE BEARINGLOCK WASHER Replace.REVERSE SHIFT FORKREVERSE SELECTORREVERSE SELECTOR HUBCOUNTERSHAFT 4TH GEARNEEDLE BEARINGDISTANCE COLLAR,28 mm Selective pan
COUNTERSIIAFT 2ND GEARTHRUST NEEDLE BEARINGCOUNTERSHAFT 3RD GEARNEEDLE AEARINGCOUNTERSHAFT 3RD GEAR COLLARTHRUST NEEOLE BEARINGSPLINEO WASHER3RD CLUTCH ASSEMBLYO-RINGS Replace.COUNTERSHAFTSHIFT CONTROL SOLENOID COVERHARNESS CLAMP BRACKETSHIFT CONTROL SOLENOID VALVE A/B ASSEMBLYHARNESS CLAMP BRACKETSHIFT CONTROL SOLENOID VALVE FILTER/GASKETReplace.SNAP RINGTHRUST WASHERTHRUST NEEDLE BEARINGMAINSHAF ,ITH GEARNEEDLE BEARINGSTHRUST NEEDLE BEARINGMAINSHAFT 4TH GEAR COLLAR2ND/4TH CLUTCH ASSEMBLYO-RINGS ReDlace.THRUST WASHER,36.5 x 55 mm Selective part
THRUST NEEDLE BEARING
MAINSHAFT 2ND GEARNEEDLE BEARINGTHRUST NEEOLE BEARINGMAINSHAFTSEALING RINGS,35 mmSEALING RING. 29 mmNEEDLE BEARINGSET RINGlST-HOLD CLUTCH ASSEMSLYO-RINGS Replace.THRUST WASHERTHRUST NEEDLE BEARINGNEEDLE BEARINGSUB.SHAFT 4TH GEARTHRUST NEEDLE BEARINGSU&SHAFT,ITH GEAR COLLARSUB.SHAFTNEEDLE BEARING STOPNEEDLE BEARINGATF GUIDE CAP Replace.TRANSMISSION HANGERBREATHER CAPMAINSHAFT SPEED SENSORO-RING Reolace.REVERSE IDI.fR GEARDOWEL PlN, lil x 25 mmSNAP RINGSSU&SHAFT TRANSMISSION HOUSING AEARINGMAINSHAFT TRANSMISSION HOUSING BEARINGCOUNTERSHAFT TNANSMISSION HOUSINGBEABINGDOWEL PlN, 14 x 25 mrnCONNECTOR BRACKETDOWEL PlN, 14 x 20 mmTRANSMISSION HOUSING GASKET Replace.DIFFERENTIAL ASSEMBLYTOROUE OONVERTER HOUSING OIL SEAL Replace.TOROUE CONVERTER HOUSING
@@@@@@@@@@@@@@@@@@@@@@@)@@@@@@@
@@@@@@@
TOROUE SPECIFICATIONS
Boli/Nut No.Torque ValueSizeRemarks
6B
10A
12 N.m (1.2 kgf.m,8.7 lbf.ft)'14 N.m (1.4 kgim, 10 lbf'ft)
44 N.m (4.5 kgim, 33 lbf.ft)
6x 1.0 mm
6x1.0mm
10 x '1.25 mm
14-1A3
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17.
18.
19.
20.
21.
Install the sub-shaft assembly in the transmission
housing (see page 14-210 and 14-2'111.
lnstall the ATF magnet (4WD) in the transmission
housing, if necessary.
Install the reverse idler gear and gear shaft holder
(see page 14-231).
Install the differential assembly in the torque con-
verter housing.
Assemble the mainshaft and countershaft sub-
assembly (see page 14-206 and 14 207],, then install
them together in the torque converter houslng.
COUNTERSHAFTSUB-ASSEMBLY
Turn the shift fork so the large chamfered hole is
facing the fork bolt hole. then install the shift fork
with the reverse selector and torque the lock bolt.
Bend the lock tab against the bolt head.
SHIFI FORK
LOCK WASHERBeplace.
6 r 'l.O mm4 N.m(1.4 ksl.m. 1O lbt.ft)
Large chamfered hole
24.
Install the reverse gear with the collar and needle
bearing on the countershatt.
Align the spring pin on the control shaft with the
transmission housing groove by turning the control
shaft.
SPRING PIN CONTROL SHAFT
TRANSMISSION HOUSING
25. Place the transmission housing on the torque con-
verter housing with a new gasket and the three
dowel pins,
Make sure that the mainshaft speed sensor is not
installed on the transmission housing before
installing the transmission housing on the torque
converter housing.
26. Install the transmission housing mounting bolts
along with the transmission hanger and the connec-
tor bracket, then torque the bolts in two or more
steos in the seouence shown.
NOTE: The illustration shows the 4WD automatic
transmission. The 4WD has 19 transmission hous-
ing mounting bolts; the 2WD has 18 bolts.
TOROUE: 44 N.m {,[.5 kgf.m, 33 lbf'ft)
{cont'd)
14-253
SPRING PIN
TNANSMISSION
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Real-time 4WD-Dual Pump System
Troubleshooting (Automatic Transmissionl
When starting and accelerating in forward gesrs {4WDmodel
1. Lift up the vehicle so all four wheels are off theground (see section 1).
2. Make a mark on either No.
shaft.
'I or No.2 propeller
PROPELLER SHAFT
Start the engine, and let it run until it warms up (the
radiator fan comes on at least twice).
With the engine at idle. shift to the E position.
Apply the parking brake firmly. and measure thetime it takes the propeller shaft to rotate 10 times.. lf the measured time is more than 10 seconds,
the 4WD system is normal.
. lf the time is less than 10 seconds, there is aproblem in 4WD system. Check the differential
fluid. lf the differential fluid is normal, replace
the torque control differential case kit.
15-10
When starting and accelerating in revGrsg gear {4WDmodel
1. Lift up the vehicle so all four wheels are off theground (see section 1).
Make a mark on either No.
shaft.
1 or No. 2 propeller
PROPELLER SHAFT
Start the engine. and let it run until it warms up (the
radiator fan comes on at least twicei.
With the engine at idle, shift to the E position.
Apply the parking brake firmly, and measure the
time it takes the proDeller shaft to rotate 10 times,. lf the measured time is more than 10 seconds,
the 4WD system js normal.. lf the time is less than 10 seconds, there is aproblem in 4WD system. Check the differential
fluid. lf the differential fluid is normal, reolace
the torque control differential case kit.
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