[DML] Yet another Idle question

["Bill Koenig" <dmc06976@xxxxxxxx>]

I'm having some trouble diagnosing a problem with 6976.  It starts up 
and runs like a champ, however when the engine warms up, the idle 
gradually increases to the point that it doesn't go below ~1500rpm.

Now I've heard people say its the thermistor, but I been in the valley 
of my car and I don't want to return unless I am sure that is the 
problem.  I wanted to test the thermistor (and possibly the whole idle 
system).  Is it true that I should measure the resistance of the #9 & 
#11 wires coming off the ECU when the engine is cold/hot?  I read 
someplace else that on a cold engine, resistance should be around 10K 
ohms, and it should drop considerably after the engine is warm (if the 
thermistor is working).  Except I couldn't get a reading connecting my 
voltmeter to those two wires, so instead I was measuring resistance at 
the #9 and #11 pins on the ECU (which I realize now was a stupid 
mistake).  So I'm wondering - does anyone have any guidance to offer?  
Or perhaps an alternate means of testing my idle control system?

Thanks,
Bill
(and VIN06976!)



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