[Vwdiesel] glow plug indicator light - follow-up

[Craig Osborn]

Thanks to all who made suggestions.  As a few of you guessed - it was indeed
the temperature sender.  One follow-up question --  I thought that there was
only one sensor, but I see there are two 180 degrees opposed on the fitting.
Should I have replaced both?  It is working correctly after replacing one.

 

Craig 

 

>>My 81 recently started doing a peculiar thing.  The yellow glow plug
indicator light will light when the ignition key is turned, but will NEVER
turn off until the engine is started.  The engine will start (even in cold

temperatures) in the usual manner if I wait for a period of time equivalent
to the time in the past when it was functioning properly.  After the engine
is started, the yellow indicator light will turn off. It acts the same way
even if the engine is at normal operating temperature and I perform a
restart. I replaced the glow plug relay with a new one and it did not fix
the condition.  Any suggestions?

 

 

Craig