[Vwdiesel] Glowplugs how mine works -- ( Slow and fast )
h_hagar at prcn.org
Fri Nov 28 11:14:52 EST 2003
First the old slow system : The light on dash does not tell status of plugs.
it is a timing indicator showing amount of preheat suggested. Plugs can be
heating , even with light off. Plugs stop heating the minute engine fires, regardless of
temperature.(likely controlled by alternator) . Knowing this you can find out what system
you have in your VW. With engine cold turn key on but do not start. With a testlight connected
to plug buss, time the interval from dashlight goes out , to test light goes out.
It will be in the order of 15 to 30 seconds. Then do a start and see if testlight goes out
when engine fires. IF so you have the old "Relay" installed. If test light
stays on after a startup "afterglow" you have the new "Relay" installed.
The turbo I have with afterglow does not have the dashlight working so I can't test that,
however I do have a light connected to plug buss and the afterglow is working. Hagar
PS : This to help Wade York.
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