ldle Control System
ldle Speed Setting (cont'dl
38 D16Y5 engine whh M/T,'99 - 00 81642 engine
NOTE: Before setting the idle speed, check the follow-
- The MIL has not been reported on.
- Air cleaner
Start the engine. Hold the engine at 3,000 rpm with
no load (transmission in neutral) until the radiator
fan comes on, then let it idle.
Connect a tachometer.
Disconnect the IAC valve 2P connector and the EVAP
purge controlsolenoid valve 2P connector.
lf the engine stalls, restart the engine with the accel-
erator pedal slightly depressed. Stabilize the rpm at
1.000, then slowly release the pedal until the engine
Check idling in no-load conditions: headlights, blower
fan, rear defogger, radiator fan, and air conditioner
are not operating.
ldl€ speed should be:
450 i 50 rpm
lf necessary, adjust the idle speed, by removrng lne
cap and turning the idle adjusting screw.
After adjusting the idle speed recheck the ignitlon
timing (see section 23). lf it is out of spec, go back
to step 4.
6. Turn the ignition switch OFF.
7. Reconnect the 2P connectors to the IAC valve and
the EVAP purge control solenoid valve, then do the
ECM reset procedure.
8. Restart and idle the engine with no-load conditions
for one minute, then check the idle sDeed.
ldle speed should bo:
D16Y5 engine: 670 i 50 rpm
81642 engine: 700 i 50 rpm
81642 engine: 750 t 50 rpm
NOTE: lf the idle speed increases to 8lO t 50 rpm,
this means the EVAP system is purging the canister.
To stop the purging temporarily, raise the engine
speed above 1,000 rpm with the accelerator pedal,
then slowly release the pedal.
9 . l d l e t h e e n g i n e f o r o n e m i n u t e w i t h h e a d l i g h t s
(Low) ON. and check the idle speed.
ldle speed should be:
750 i 50 rpm
1 0 . T u r n t h e h e a d l i g h t s o f f . l d l e t h e e n g i n e f o r o n e
minute with heater fan switch at Hl and air condi-
tioner on, then check the idle soeed.
ldls speed should be:
810 t 50 rpm
l f t h e i d l e s p e e d i s n o t w i t h i n s p e c i f i c a t i o n , s e e
Symptom Chart on page 11-84.