[Vwpickups] A2 glow plug !@#$!

[James Hansen]

Check the firewall fuse.  They get sometimes get brittle, and cracked, and
are intermittent.  I had similar experience on my 89, and that turned out to
be the fuse.
-james

> -----Original Message-----
> From: Mathew Banack [mailto:jiggseob at hotmail.com]
> Sent: Tuesday, October 27, 2009 11:08 PM
> To: vwpickups at neubayern.net
> Subject: [Vwpickups] A2 glow plug !@#$!
> 
> 
> Working on an 85 Golf for a winter beater car.
> 
> 
> 
> Glow plugs are intermittent, one day they work, next day they dont.
> When they don't, its crankety crank for about 30 seconds and it will
> go.  Some days the glow plugs work, and it fires right up.  The light
> in the cluster always says it works, but I've put a test-lite on the
> bus bar and found for sure they work sometimes and for sure the bus-bar
> is dead - zero volts when they don't.
> 
> 
> 
> Bentley says check the T terminal of the glow plug relay plug for
> continuity to ground below 50C thats about 122F.  Above 122, there
> should be no continuity.  Isn't that sensor a varistor, that is higher
> resistance higher temperatures, rather than a switch that closes below
> 50C and opens above?
> 
> 
> 
> Or is there circuitry between the socket and the sensor that turns
> resistance into off/on?  Nothing mentioned in Bentley...
> 
> 
> 
> Is that sensor troublesome?  Could a PO have hooked the glow plug T
> wire to the guage sensor?  Or replaced a T sensor with a guage sensor?
> Is there a part number on the glow plug T sensor?  Whats the PN?
> 
> 
> 
> The annoying thing is the intermittent fault, one day it works perfect,
> next day it craps out, especially when the Chevvy driving neighbours
> are watching.  The cloud of smoke it makes after 30 seconds of cranking
> is kind of embarrassing....
> 
> 
> 
> Thanks in advance,
> 
> 
> 
> Mathew Banack
> 
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