Honda CR-V 1997 Service Manual page 353

(From page 11-150)
Check the lAC valve:
Disconnect the 2P con nector from
the lAC valve.
Does the engine speed drop
or th e engine sta ll ?
YES
Adjust the
(base) Idle speed lsee
page 11·169. 170). H the base Idle
speed cannot be adjusted. clean
the ports In the throttle body.
(From pag e ' 1-150)
B
(AfT)
, ._. _._._._._.
I
Check
the fast idle thermo "atve:
1. Turn the ignition switch OFF.
2.
Rem ove the intake air duct
from the throttle body.
3.
Start the engine and let it idle.
4. Put your finger on the lower
port in the throttle body.
Does the engine speed drop?
NO
L _ . _ _ . _ ._. _ .
Put you r finger on th e upper port
in the throttle body.
Does the engin e speed drop?
Y ES
Adjust the idle speed Ise. page
11-169.170) . If the adjustment
does not correct the problem.
replace the lAC va lYe.
NO
- _.,
L
YES
NO
Replace the lAC valve.
UPPER
PORT
LOWER
PORT
_._._._._. _._._._._._.-
,
Check engine coolant level and for
air in the cooling system. If OK.
replace the
tnt
kIe thermo valve.
_ ._ .- _. _.
_ _
._ .
_ _
._ .-
~
Check for vacuum leaks. make
sure the throttle valye is com-
pletely closed. and repair as nec-
essary.
FAST IDlE
THERMO VALVE
(AfT only)
11-151