MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: stuart-88 on September 16, 2015, 10:19:00 pm

Title: Temp gauge fluctuating
Post by: stuart-88 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.
Title: Re: Temp gauge fluctuating
Post by: PT82 on September 16, 2015, 10:20:40 pm
Thermostat. A lovely 3 hours labour to replace!
Title: Re: Temp gauge fluctuating
Post by: Andy on September 16, 2015, 10:25:16 pm
Move to a gti Stuart!need some pics
Title: Re: Temp gauge fluctuating
Post by: stuart-88 on September 16, 2015, 10:57:09 pm
Quote from: PT82 on September 16, 2015, 10:20:40 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:
Title: Re: Temp gauge fluctuating
Post by: Madone 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 ! 
Title: Re: Temp gauge fluctuating
Post by: Wolf Burger 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.
Title: Re: Temp gauge fluctuating
Post by: MC71 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.
Title: Re: Temp gauge fluctuating
Post by: dazza 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?
Title: Re: Temp gauge fluctuating
Post by: stuart-88 on September 18, 2015, 01:29:36 pm
Cheers guys. Sounds pretty involved, should be fun   :scared: