Where’s my Thermostat?

Post by **Lee1972** » 15 Jun 2021, 17:10

Hi guys,
Silly question, but where’s my thermostat located? my engines overheating and the fan switch also seized on me today.
I’m not great with engines.
Thanks

Post by **R0B** » 15 Jun 2021, 17:32

https://volkswagen.7zap.com/en/rdw/typ+ ... 121-16007/

Post by **TONYT25T25** » 15 Jun 2021, 17:41

It looks as if you also have a vacuum tube missing between the airbox and the Carb.

Post by **Lee1972** » 15 Jun 2021, 17:43

Thanks mate

Post by **weimarbus** » 15 Jun 2021, 18:22

sorry Rob, wrong drawing OP has early cooling system, the thermostat is in an aluminium casting attached to the waterpump

Post by **R0B** » 15 Jun 2021, 19:15

Ahh right, TBH I only know the 2.1. I wrongly assumed the stermothats were in the same place.

Post by **jrt** » 15 Jun 2021, 19:44

If you have to remove the housing give all the bolts a good brush and sparky with plusgas beforehand. Have you tested the radiator switch by bridging the the connector pins with a paper clip to test if it is faulty?
When you say overheating have you checked coolant levels in both tanks?

David.

Post by **Lee1972** » 15 Jun 2021, 21:17

Hi David, yes I’ve checked the coolant levels and they’re both good. I haven’t tested the radiator, but I’ll do that.
Thanks

Post by **jrt** » 15 Jun 2021, 22:02

https://wiki.club8090.co.uk/index.php/C ... diator_fan
David.

Post by **Lee1972** » 17 Jun 2021, 17:05

I’ve noticed the lower pipe here on the photo doesn’t get hot while running the engine so could this be a stuck thermostat?

Post by **DoubleOSeven** » 20 Jun 2021, 06:34

Lower pipe is the cooled water coming back from the radiator. Top pipe is the hot water going to the radiator.

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