[Vwdiesel] Hi All, Happy May already. I have a wiring question about the heaterelement in the breater hose

[Sandy Cameron]

At 07:50 AM 01/05/2009 -0700, you wrote:
>On newer diesels, there is a 12V heating element in the breater hose
that sucks crank case and valve cover gases and feeds them back into the
intake hose going to the turbo.  Does this have 12V on it all at times or
only until the motor gets to a certain temp and then some relay turns it
off based on a signal from a temp sender on the head?

 Possibly only on turbo's? Both my A2  TD's have them

A lot of air being pumped  (sucked) past the breather junction, lowered
pressure, lowered temperature, 

It's there to prevent ice build-up from water vapour from the crankcase at
certain ambient temperatures, which could block the breather. (bad news).

I think it is powered from the X relay, but it is a very low wattage heater,
somewhat the same as the windshield washer nozzels.
It is powered as long as the engine is running (and alternator is charging)
(on A2's)