Temperature Sensor Reading

Discussion relating to the Scirocco 1982-1991 - - please ask technical questions in the technical/trouble shooting section
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Chris_vw_1987
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Temperature Sensor Reading

Post by Chris_vw_1987 »

Hi guys,

I was just wondering where about the temperature reading should sit when up-to running temp, currently mine reads like this (slightly more in traffic):

Image

Do I need a new sensor?

Cheers lol


mark1gls
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Re: Temperature Sensor Reading

Post by mark1gls »

Mine sits in the middle of the guage when running and moves to about 3/4 when stuck in traffic then the fan kicks in and it goes back the 1/2 way.
How old is your coolant and what colour is it?


Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
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Chris_vw_1987
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Re: Temperature Sensor Reading

Post by Chris_vw_1987 »

Not sure about the age of the coolant, I picked up the car a few weeks ago.

Do you think it would be worth replacing the sender and coolant?

Cheers


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whiteshark
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Re: Temperature Sensor Reading

Post by whiteshark »

Drain your water and flush the system well out. Top up with enough coolant and water and take it from there. Why not change your oil and oil filter while your at it. I had the same problem in my old Polo S. A good flush out and plenty of coolant solved the problem.


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james butler
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Re: Temperature Sensor Reading

Post by james butler »

same as mine i would say.
goes about 2/3 the way up the gauge when in traffic then bang on in the middle when travelling over 40mph.
no sense changing the sensor, just change the coolant as a precaution and see how it goes.
as whiteshark says it would be worth doing a service while you are there


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unknownmale
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Re: Temperature Sensor Reading

Post by unknownmale »

The temp sender could be at fault. As the temperature increases there should be less resistance to ground. When you start the car up from cold does the gauge move up a fraction right away?


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mark1gls
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Re: Temperature Sensor Reading

Post by mark1gls »

Yes worth a coolant change if you don't know the history, the blue stuff is best replaced every 2 years.
£7.99 for ready mixed coolant and it's enough to do the whole system.
http://www.eurocarparts.com/ecp/p/car-a ... &0&cc5_865
If you can remove the thermostat as well and you can test that's ok by putting it in boiling water and check it opens, it should open at 88 degrees C, you will need a replace the seal when removing the thermostat.
http://www.eurocarparts.com/thermostat-housings-gasket


Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
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Chris_vw_1987
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Re: Temperature Sensor Reading

Post by Chris_vw_1987 »

Awesome guys, thanks for the help!

I'll have a go at this once I've picked up the new bumper.

Cheers


Chris_vw_1987
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Re: Temperature Sensor Reading

Post by Chris_vw_1987 »

I forgot to ask!

You see the LCD clock on the clocks, can that be repaired??


DT1
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Re: Temperature Sensor Reading

Post by DT1 »



Chris_vw_1987
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Re: Temperature Sensor Reading

Post by Chris_vw_1987 »

Awesome! thank you :)


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