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I am not sure but most of vw car temp sensors sit on the water pypes at the left side of gearbox(gearbox side) so just follow ure water pypes u will find it there.hope it helps
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check for dead short in the temp wire to the sender unit or faulty sender unit
do not confuse sender unit for the gauge as against sensor unit for the coolant control for the ECM and fans
My info shows two. One is sender for gage on the dash. the other, ect, tells the computer, the engine temp. The sender for the temp gage has a one wire connector, red/white tracer. The ect is a two wire connector, gray--gray with red tracer. What kind of problem are you having?
I don't know if your the person I was talking to, but, you click on the comment link to reply.
My info shows the temp sender is not the coolant temp sensor, if wiring is correct. The temp sender is a one wire connector, I believe yellow wire. Take that wire loose from temp gage sender, key on, use a digital multimeter, any voltage on the wire? If not not have to check proper wire colors to and from instrument cluster. The voltage comes from meter fuse. I wouldn't think the fuse is the issue or you would have more than one problem.
cant tell where sensor is, but when you find it if you connect the sender unit wire to ground the gauge should read hot with ignition turned on (with engine not running) this will tell you sender unit is at fault not gauge
What do u mean by spark knock? Missfire? Temp gauge not working could be a few things, sender fault, no water, gauge fault or wiring. Check u have water in it. Then find the sender and earth it out, gauge should go all the way up, if it does replace the temp sender, if not it's gauge or wiring.
Let me know about the spark knock.. Not sure what u mean
Remove lead from temp sender on engine and ground lead, watch gauge for kneedle movement if it moves to register then remove and replace temp sender unit, if not check power supply to gauge, and related fuses and or grounds...
find the wire that goes to temp sender and apply earth to it turn ignition on the temp gauge should read hot if it does replace water temp sender if gauge dose not move gauge needs replaging
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