Testing ISVs

[Brett Dikeman]

At 11:24 PM -0500 2/23/01, 
<isham-research.freeserve.co.uk at pop.pol.net.uk> wrote:

>Just blow into one end of the ISV - it shouldn't leak.

Heh, your ISV is clean enough? :-)

Also, curious...we're talking about the 10v ISV here?

My ISV(for the 3B) is open slightly when not connected, I'm guessing 
for failsafe allow-the-engine-to-idle mode.

   Connect it and perform an output test sequence on the ECU, and the 
ECU keeps the valve 100% closed when it's done(you can even hear the 
valve humming; unplug the connector and it goes back to its rest 
position with kerp-plink.)

I suspect the #1 cause of damage to the valve is a well-intentioned 
troubleshooter forcing the valve the wrong way...perhaps an entry 
for the FOM is in order.

B
-- 
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Brett Dikeman				Systems Engineer
ProAct Technologies Corporation		914-872-8043
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