I replaced my cooling fan switch on my 81 240D with a new

FAE/Behr
Cooling Fan Sensor; Auxiliary Fan Switch; 212 Degree C

from www.autohauzaz.com

and now my Temp gauge does not work. what gives?

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06 VW Jetta TDI

You probably just knocked the temp sensor off.

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1984 300SD Turbo Diesel 150,000 miles

OBK member #23

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Check ele. plug near t'stat as per dannym. I think it's http://*************** I use them often.

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83 SD

84 CD

its plugged in but what is the chance of the temp gauge failing when i changed that sensor? i plugged the old fan switch sensor back in and let it lay on the head of the engine and the gauge moves now?

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06 VW Jetta TDI

so the old sensor works and the new one doesnt, maybe a bad sensor or wrong one?

i put the old sensor back in and my temp gauge works now it that right? i thought that sensor was for just the aux cooling fan?

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06 VW Jetta TDI

any other ideas?

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06 VW Jetta TDI