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Engine Specific Info and Questions => IDI Engine => Topic started by: slorimer on January 17, 2008, 08:30:09 am

Title: What is it?
Post by: slorimer on January 17, 2008, 08:30:09 am

On a Mk3 Jetta.  Where the upper rad hose goes into the engine, there is plastic fitting which bolts to the block.  There are 2 temperature sensors on one side of the plastic fitting, one for the gauge the other for the glow plug timer.  And on the top side of the plastic fitting there is something else that has 4 pins.  Anyone know what it does?

Title: What is it?
Post by: burn_your_money on January 17, 2008, 08:40:58 am

picture?

Title: What is it?
Post by: Vincent Waldon on January 17, 2008, 08:43:24 am

I believe it's the air-conditioning cut-out.... if the engine gets too hot the air conditioning is automatically disabled.

Title: What is it?
Post by: zukgod1 on January 17, 2008, 09:12:26 am

Quote from: "Vincent Waldon"

I believe it's the air-conditioning cut-out.... if the engine gets too hot the air conditioning is automatically disabled.

No kidding? That's kinda cool...

Title: What is it?
Post by: slorimer on January 17, 2008, 12:57:26 pm

Thanks Vincent, makes sense.

Title: What is it?
Post by: Tintin on January 18, 2008, 05:37:21 am

The two sensor on the AAZ, like you said the first is for the gauge and glow time, the other is for one of the speed of the cooling rad fan (3speed)