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Date:         Wed, 19 Nov 2003 22:41:36 -0700
Reply-To:     Gnarlodious <gnarlodious@EARTHLINK.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Gnarlodious <gnarlodious@EARTHLINK.NET>
Subject:      Re: DIESEL starting and other general questions
Comments: To: Jeffrey Earl <jefferrata@YAHOO.COM>
In-Reply-To:  <20031119221646.13933.qmail@web14604.mail.yahoo.com>
Content-type: text/plain; charset="US-ASCII"

Thanks for that comprehensive explanation.

--Gnarlie

Entity Jeffrey Earl spoke thus:

> To learn more (perhaps more than you really wanted to > know) about the VW diesel glow-system, visit Roger > Brown's excellent page: > > http://4crawler.cruiserpages.com/Diesel/CheapTricks/GlowPlugs.shtml > > From whence I quote: > "So you have the little yellow glow plug LED on the > dash, why do you need another glow plug light? > Actually, the LED on the dash has nothing to do with > the glow plugs. Its just an output from one part of > the glow plug relay, which takes the temperature > sender input and produces a delay to let the glow > plugs reach the proper operating temperature. The glow > plugs themselves are powered by a relay which is > operated by a different part of the relay circuit and > they generally stay on for a time after the LED goes > out. If the coolant temperature is warm enough, the > glow plugs and LED won't be turned on at all in the > "glow" position of the ignition switch. However, the > glow plugs are always turned on whenever the starter > is operating, regardless of temperature. > > "By running a wire off the glow plug bus bar to a > light on the dash, it will be possible to observe when > power is actually reaching the glow plugs directly. > This indicator would be useful to diagnose a number of > glow plug problems." > > IIRC, the Bentley specifies that--assuming a cold > engine--the glow plugs should continue to glow for 30 > seconds AFTER the engine is running, although the dash > indicator will have gone out long before. > > Jeffrey Earl > 1983 diesel Westfalia "Vanasazi"


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