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#1
9th March 2011, 05:39 PM
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Temperature Guage on the blink?
Coming home tonight I noticed that the coolant temperature guage wasn't reading anything at all. When I turned off the ignition it moved very slightly to the left and then slightly to the right (to the first mark) when I turned the ignition back on again.
After a couple or repeats of the above, it went back up to the usual 90C. Just a glitch or is this indicative of a faulty sensor/guage? 
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#2
16th March 2011, 06:28 PM
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mine does that sometimes too Jim, I suspect its the sender thats on the way out as the car runs warm enough, I was just waiting till it goes into Andy for a service and get him to have a look, seems to be a common problem on a number of Audi's if other forums (or is that Fori?) are anything to go on
cheers
__________________
 Audi S8 2015, Daytona Grey
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#3
16th March 2011, 06:33 PM
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might be a sticky thermostat otherwise. . .
__________________
Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#4
16th March 2011, 06:38 PM
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it sometimes happens when the car has been driven and stopped for 10 mins or so and then started up again, so the engine is still warm, and the temp guage hardly moves, and then if I switch off and on again it registers 90 again, so I didnt think it could be the thermostat?
cheers
__________________
Audi S8 2015, Daytona Grey
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#5
16th March 2011, 06:54 PM
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In those circumstances, you're right - the thermostat would be either a sticking then suddenly opening problem or staying shut etc so if it is doing that after 10 minutes then it is unlikely. . .
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#6
17th March 2011, 07:03 AM
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Popping in to A4Audi again this afternoon to get this and the parking sensors looked at. The thermostat is new, so I don't think it's likely to be that. But today, in addition to the 'all or nothing' readings that I've been getting, it did start to wander up and down a bit (which is what it did when the thermostat was iffy).
More news tomorrow..... ...what a cliff-hanger, eh? 
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