Honda CR-V 1997 Service Manual page 372

Idle Control System
Idle Speed Setting (cont'd)
'98 - 00
model.:
NOTE: Before setting the idle speed, check the follow-
ing items:
- The MIL has not been reported on.
- Ignition timing
- Spark plugs
- Air cleaner
- pcv
system
1. Start the engine. Hold the engine at 3,000 rpm with
no load (in Park or neutral) until the rad iat or fan
comes on,
then let it
idle.
2. Connect a tachometer.
3.
Disconnect the lAC valve 2P connector and the EVAP
purge control solenoid valve 2P connector.
EVAPPURGE
CONTROL
SOLENOID VALVE
EVAP PURGE
CONTROL
SOLENOIO VALVE
4. If the engine stalls, restart the engine with the accel -
erator pedal slightly depressed. SLebilize the rpm at
1,000, thon slowly release the pedal until the engino
idles.
5. Check the idle in no-load conditions: headlights, blow-
er fan, rear defogger, radiator fan, and air conditioner
are not operating.
Idle
_ad
should be:
480
±
50 rpm (In Park or neutral)
11-170
\f necessary, adjust the idle speed, by turning the
idle adjusting screw.
After adjusting the idle speed, rech eck the ignition
timing (see section 4). If it is out of spec, go back to
step 4.
IDLE
ADJUSTING
SCREW
6. Turn the ignition switch OFF.
7. Reconnect the 2P connectors to the lAC valve and
the EVAP purge control solenoid valve, then do the
ECM/PCM reset procedure.
S. Restart and idle the engine with
no ~ load
conditions
for one minute, then check the idle speed.
Idle speed should be:
'98 model:
750
±
50 rpm (in Park or neutral)
'99 - 00 modals:
730
±
50 rpm (in Park or neutral)
NOTE: If the idle speed increases to 780
±
50 rpm
(770 ± 50 rpm)", this means the EVAP system is
purging the canister. To stop the purging temporari-
ly, raise the engine speed above 1,000 rpm with the
accelerator pedal, then slowly release the pedal.
": '99 - 00 models
9. let the engine idle for one minute with the head-
lights (Low) ON, and check the idle speed.
Idle speed should be:
'98 model:
750
±
50 rpm (in Park or neutral)
'99-00
models:
730 ± 50 rpm (in Park or neutral)
10. Turn the headlights off. let the engine idle for one
minute with the heater fan switch at HI and air con-
ditioner on, then check the idle speed.
Idle speed should be:
'98 modal:
780
±
50 rpm (in Park or neutral)
'99 - 00 modal.:
770
±
50 rpm tin Park or neutral)
If the idle speed is not within specification, see the
Symptom Chart on page '1 -64.