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Engine Specific Info and Questions => IDI Engine => Topic started by: drainsurgin on October 27, 2009, 07:34:05 pm

Title: what does this sensor do?
Post by: drainsurgin on October 27, 2009, 07:34:05 pm

I have a 92 td 1.6 jetta . There is a sensor between the puck on crankcase vent and main air inlet to turbo . Can anyone tell me its function. It is shaped like a d inside and looks copper in color.   thanks c

Title: Re: what does this sensor do?
Post by: Vincent Waldon on October 27, 2009, 08:46:58 pm

It's actually a small heater in-line with the vent line for crankcase fumes... designed to keep frost/condensation from forming in that particular pipe.

I've seen many many many diesels in my travels and have *never* actually seen one connected... perhaps an option for colder climates than Edmonton... although some days that's hard to imagine. ;)

Title: Re: what does this sensor do?
Post by: Black Smokin' Diesel on October 28, 2009, 11:02:40 am

I had one connected in my 87 TD. I have no idea if it's actually useful since the PCV pulls hot air from the engine.

Title: Re: what does this sensor do?
Post by: Jettage1 on October 28, 2009, 07:01:19 pm

My 92 Jetta Eco has one connected.  Don't know if it helps anything or not.  Don't even know if it works...or what tells it to work.  Heck, maybe it's always powered.  Someday when I am REALLY bored I'll get out the multimeter & see.  But I doubt I'll ever be that bored  ;D 

Besides, I need to figure out a new routing for my air intake tube, & it may mean getting rid of that section of pipe anyway...  Though I will probably still try to tee in the crankcase return somehow.