[T3] cool weather idle hunt

[Keith Park]

that FI relay screw is a often forgotten weak spot that can leave you hung,
I remember Russ getting a great deal on a car once because of that....

if its loose it can have a high resistance, that would effectively give the
electronics a low system voltage, could be intermittent and have different
effects over the warmup curve, not noticable as much at speed but way too
rich at idle.

Keith


-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of Daniel Nohejl
Sent: Wednesday, January 11, 2017 8:19 PM
To: type3 at vwtype3.org
Subject: Re: [T3] cool weather idle hunt

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Well, we lifted up the back seat and found that all the connections running
to/from the battery were okay. However, the ground screw for the FI power
relay was really loose and I was able to easily rotate the connector side to
side. We started up the car and waited for the idle to come up. It started
to hunt but when I moved the ground wire, it stopped. We turned the engine
off, tightened up the ground screw, and went for a ride. For the first time
in months, there was no hunt at cold idle at all!! We drove around for a
while with the lights on and there was no lope whatsoever but that's an
intermittent and can't be ruled out yet. 

I'm reluctant to think that everything is fine, but that might be because I
don't understand how a loose ground screw at the FI power relay would cause
a hunt/lope at cold idle and an intermittent low lope and stall once warm
while having no other effect on drivability. Can someone enlighten me? Was
my experience with stalling the car by plugging the AAR hose another red
herring?

Oh...I think this has been covered before, but why do I never get Bob's
messages directly to my inbox? I only see them if I go to the type3.org
archive or when someone quotes them. Is this a gmail/AOL thing?




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