RE: [DML] idle problem

["John Hervey" <john@xxxx>]

If you will follow the link to the web site, it will show you how to set the
idle. I would set it 950. 775 is to low. About middle of the page.
John Hervey
http://www.specialtauto.com/delorean-parts/reference-materials.html

-----Original Message-----
From: checksix3 [mailto:jetjock11@xxxx]
Sent: Wednesday, August 27, 2003 3:24 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] idle problem


...I have yet to see the proper way to set up the idle speed system
(the Bosch recommended method) in any post or archive. As long as you
have no air leaks and your CO is set closely this will solve all idle
hunting...period. Some airflow trough the throttle body and metering
plate is required for the system to work properly. This is obvious if
the conductance of the system is measured.

Opening the loop by disconnecting the engine speed input variable
(pin 12) on the idle ECU while keeping the idle switch closed and
forcing the CIS motor to it's basic default position is the key to
proper setup of the CIS system. (This is also a convienent method of
setting manual idle if you prefer not to use the CIS, although the
switch only needs to be kept closed during setup.) You should also
test the components before you attempt setup to be sure they're
working.

I also point out an open circuit or high value in the CIS warm up
thermistor will cause a default idle speed of appx 2000 rpm. Be sure
this circuit is not open. Jumper it (or measure it) at the ECU if you
have a doubt, zero ohms or any value below appx 10K will ensure the
ECU setpoint is 775 rpm.

Fwiw, my car idles perfectly, hot or cold, from the moment it's
started.






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