[Vwdiesel] Caddy glow plug light acting up

[James Hansen]

My absolutely favorite thing to install is a cheater light to tell me if the
glow plug bus bar is getting power or not.  Without it you don't quite have
enough information to really figure out stuff Doug.  Did you try cranking
after the no light condition and it didn't start?  Most likely the relay, or
the relay plug has issues.  Did this coincide with washing the car a day or
so earlier?  Might have a windshield gasket leak that dribbles down on the
relay and causes all sorts of fun things like harness plug(s) corrosion,
high resistance connections causing heat melting the harness to fuse panel
plugs, etc..
-james

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com] On
Behalf Of Doug
Sent: January-12-14 5:54 PM
To: vwdiesel at vwfans.com
Subject: [Vwdiesel] Caddy glow plug light acting up

What is the Caddy trying to tell me? Last week, when we had the below zero
weather, I drove the truck to work and then had a panic attack when I went
to go home and the glow plug failed to light when I turned the key. I turned
it off and back on and the light came on normally and the engine started.
The next day, in the garage in the morning, the glow plug light came on but
was dim. I turned it off and back on and the glow plug light lit normally
and I drove the Caddy to work. When I went to leave, I had the same
scenario. Today, I went to put the Caddy in the garage for the night and it
took two trys of no light and then it lit and the engine started normally.
Is this an indication of a faulty relay under the dash? If not the relay,
what is the Caddy trying to tell me?
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