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  #1  
Old 25th November 2019, 08:31 PM
Bushido Bushido is offline
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Default D3 3.0 tdi temp gauge / heaters issue

Long and short folks ...

Temp gauge often sits at 70 degrees on runs. Will rise occasionally to 90 when sat in slow traffic / stationary. Cabin heaters are typically warm enough to take chill out but no more. Are hotter when gauge is sat at 90.

Replaced the thermostat and coolant temp sensor up to now with oem parts. No difference.

Where do we go next please? In dependent suggested back flush of coolant system.

Any advice appreciated
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Old 26th November 2019, 02:38 AM
snapdragon snapdragon is offline
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https://www.ebay.co.uk/sch/i.html?_f...21113&_sacat=0

You need to replace this, it is beside the gearbox inline with the coolant hoses. Taking off the wheel makes it easier. Might be easier to buy one and get a fast fit place fit it, it is easy enough but almost in the middle of the car is difficult when laid on the floor.. It is just undertrays, two spring clips and some spare coolant to top up. I went with a FEBI one and it has lasted longer than the original VW/Audi one.
I don't know who supplies them but they are a common failure across many VAG models.

Last edited by snapdragon; 26th November 2019 at 02:40 AM.
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Old 26th November 2019, 09:55 AM
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Johnmed Johnmed is offline
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Snap beat me to it. Itís the often overlooked/largely unknown thermostat.
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CURRENT CAR: Quartz gray 2008 A8 3.0 TDi. My installs: (2009) AMI and ViseeO Tune2Air WMA3000A, generic RVC, Westfalia OEM towbar, D4 19s and S8 MFSW with paddles.

LAST CAR: Black 2001 A2 1.4 TDi, winter pack, leather/alcantara sports seats, DIS and BrokenSky
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Old 27th November 2019, 06:15 PM
Bushido Bushido is offline
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Much appreciated, I tried an indi and our sponsors regarding this who all seemed to think I had dreamt up the existence of it...

Will report back
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Old 10th December 2020, 08:23 PM
Bushido Bushido is offline
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And just a year later I finally got around to having it replaced!! lol
Fingers crossed it does seem to have done the trick but will know better when I run to work in the morning. Wish me luck!
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Old 12th December 2020, 10:15 AM
Bushido Bushido is offline
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Job jobbed. Temp gauge sits at 90 and we have..... heat in the whole cabin!!!

Still have the garages I approached saying "cant have been that..."
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Old 14th December 2020, 08:22 PM
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Johnmed Johnmed is offline
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Quote:
Originally Posted by Bushido View Post
And just a year later I finally got around to having it replaced!! lol
Fingers crossed it does seem to have done the trick but will know better when I run to work in the morning. Wish me luck!
Best not to rush into these things, eh!!
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CURRENT CAR: Quartz gray 2008 A8 3.0 TDi. My installs: (2009) AMI and ViseeO Tune2Air WMA3000A, generic RVC, Westfalia OEM towbar, D4 19s and S8 MFSW with paddles.

LAST CAR: Black 2001 A2 1.4 TDi, winter pack, leather/alcantara sports seats, DIS and BrokenSky
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