hum in idle speed regulator
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hum in idle speed regulator
- From: Peter Lucas <lucas@xxxx>
- Date: Thu, 14 Jun 2001 22:48:28 -0400
Ever since completing my water pump replacement project, I have had a
rough idle problem, mostly when the engine is cold
.
I am still working through the obvious possibilities, but in the
process of doing so I noticed that
when the ignition is on but the engine is not running, there is a
soft continuous hum coming from the idle speed regulator (this is
*not* the buzz from the frequency valve). I have never noticed this
before. Is this normal, or could it be related to my problem?
Any tips on diagnosing the regulator? If there is a problem, how
does one differentiate between bad regulator and a bad ECU? Can I
measure the electrical activity between the two? Well, I know I can
do that, but what should it look like?
Thanks for any guidance.
--Pete Lucas
VIN #06703
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