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?
Topic: What is it? (Read 1233 times)
