idle control motor

[Landshark]

well, i got everything back together and took it for a short test drive to burn off all the TB cleaner. i pull back into the driveway, and see puddles of coolant! ARRRRRGH! guess who forgot to hook up the right-side coolant hose to the TB? i'm pretty exhausted now, but i'll go back later to re-attach the hose (which means removal of the plastic air tube..... ) and take it for another spin.


tomorrow after work, i'll find out if the fix is in after it sits in the parking lot all day and it gets a cold start.............

[Landshark]

ok, everything back together (for real!). i forgot to mention that when i had it apart, i looked in my "Service Manual on CD", and checked the IAC resistance values. both were around 8ohms, where it should be between 5 and 20. here is the IAC valve check procedure from the CD:


IDLE CONTROL SYSTEM MALFUNCTION
1) Start and operate engine at idle. Check intake manifold,
idle air control (IAC) solenoid valve and throttle body for loose
installation and gaskets for cracks. Check by-pass and vacuum hoses
for loose connections and cracks. Repair or replace as necessary. If
air intake components are okay, go to next step.
2) Turn ignition on, with engine off. Using DVOM connected to
chassis ground, backprobe ECM connector terminal No. 13. See
appropriate wiring diagram in L - WIRING DIAGRAMS article. If voltage
reading is 3 volts or more, go to next step. If voltage reading is
less than 3 volts, go to step 8).
3) Backprobe ECM wiring terminal No. 14. If voltage reading
is 3 volts or more, go to next step. If voltage reading is less than 3
volts, go to step 8).
4) Turn ignition off. Remove air intake boot. Disconnect IAC
connector. Turn ignition on. Backprobe ECM connector terminal No. 13.
If voltage reading is 10 volts or more, repair short in wiring between
ECM and IAC. After repair, replace ECM. If voltage is less than 10
volts, go to next step.
5) Backprobe ECM connector terminal No. 14. If voltage
reading is 10 volts or more, check for short in wiring between ECM and
IAC connector. After repair, replace ECM. If voltage reading is less
than 10 volts, check for poor contact in ECM connector. If contact is
poor, repair contact in ECM connector. If contact is okay, go to next
step.
6) Turn ignition off. Check resistance between IAC connector
terminals No. 1 and 2, and terminals No. 2 and 3. If resistance is 20
ohms or more, replace IAC. If resistance is 5 ohms or less, replace
IAC and ECM. If resistance is more than 5 ohms, but less than 20 ohms,
go to next step.
7) Remove IAC. Connect battery voltage to IAC terminal No. 2.
Ground terminal No. 1. If IAC does not open fully, clean IAC. If IAC
opens fully, ground terminal No. 3. If IAC closes fully, go to next
step. If IAC does not close fully, clean IAC.
8) Turn ignition off. Disconnect IAC connector. Turn ignition
on. Check voltage between IAC connector terminal No. 2 and chassis
ground. If voltage reading is 10 volts or more, go to next step. If
voltage reading is less than 10 volts, repair open in wiring between
IAC connector and ECM connector.
9) Turn ignition off. Disconnect ECM connector. Check
resistance between ECM connector terminal No. 14 and IAC connector
terminal No. 1, and between ECM connector terminal No. 13 and IAC
connector terminal No. 3. If resistance is more than one ohm, repair
open in wiring between ECM and IAC connectors. If resistance is one
ohm or less, go to next step.
10) Check resistance between ground and ECM connector
terminal No. 13 and No. 14. If resistance is 10 ohms or more, ensure
IAC connector terminals are okay. Repair connector terminals as
necessary. If resistance is less than 10 ohms, repair short in wiring