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Author Topic: Temp gauge fluctuating  (Read 2185 times)

Offline stuart-88

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Temp gauge fluctuating
« on: September 16, 2015, 10:19:00 pm »
Hi

Recently bought a GTI, and noticed the temperature gauge fluctuates. Warms up fine then will drop down to 70, raises back up to 90 and just goes between them.

Is this normal? Or a sensor having a mare?

Any help appreciated.

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Offline PT82

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Re: Temp gauge fluctuating
« Reply #1 on: September 16, 2015, 10:20:40 pm »
Thermostat. A lovely 3 hours labour to replace!

Offline Andy

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Re: Temp gauge fluctuating
« Reply #2 on: September 16, 2015, 10:25:16 pm »
Move to a gti Stuart!need some pics

Offline stuart-88

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Re: Temp gauge fluctuating
« Reply #3 on: September 16, 2015, 10:57:09 pm »
Thermostat. A lovely 3 hours labour to replace!

3 hours?!  :surprised: I hope that includes 2 1/2h of standing around and drinking tea before hand!!

I'll get some pics over the weekend Andy  :smiley:

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Offline Madone

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Re: Temp gauge fluctuating
« Reply #4 on: September 17, 2015, 07:48:24 pm »
My stat was done not so long ago by a Audi master tech, even he said it took a good few hours. The stat is right at the front below the inlet, a pig to get to apparently ! 
« Last Edit: September 17, 2015, 10:07:34 pm by Madone »

Offline Wolf Burger

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Re: Temp gauge fluctuating
« Reply #5 on: September 17, 2015, 09:33:32 pm »
Main Thermostat will sort this.

Don't mess with Coolant sensors ETC.
Bit of an awkward change. Alternator needs to come off from memory.
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Offline MC71

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Re: Temp gauge fluctuating
« Reply #6 on: September 17, 2015, 11:11:43 pm »
Yeap.....your main stat needs changing.  :happy2:

It will take some time to fit due to its locations deep in the bowels.
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Offline dazza

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Re: Temp gauge fluctuating
« Reply #7 on: September 18, 2015, 08:31:57 am »
It took me about 3 hours i had a bit more room as we were in the middle of doing the cam belt. Are you DIYing it?

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Offline stuart-88

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Re: Temp gauge fluctuating
« Reply #8 on: September 18, 2015, 01:29:36 pm »
Cheers guys. Sounds pretty involved, should be fun   :scared:

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