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Glow Plug voltage constantly on Glow Plug voltage constantly on
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Old 12-28-2011, 05:53 PM
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Car: 97 Passat TDI, 98 Jetta TDI, 91 Jetta 1.9 AAZ TD, 81 Caddy project
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Default Glow Plug voltage constantly on
My 96 Passat came without a glow plug harness - so I salvaged one off another TDI I have and installed - and just to make sure voltage was getting to glows I hooked up a meter to see - and was suprised that once key is turned on to start voltage going to plugs is constantly there - now I am wondering - do these types of glow plug relays ever go bad stuck in the on position? I don't know doesn't really make sense - any suggestions?
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Old 12-28-2011, 07:08 PM
chittychittybangbang's Avatar
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What does the coolant temp sensor read? Should be on when cold and on after every engine start.
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