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| D3 - Engine Bay Everything under the bonnet |
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#11
11th August 2015, 03:42 PM
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My D2 has just started to do the same (or similar). It seems OK for ages and sits at 90C, but when I slow down or get stuck in traffic, it starts to rise. Get it out onto a 70mph stretch and it's back to 90C again.
But in slow, uphill driving it gets above 95C (but not quite 100). Both fans are running and the thermostat is recent - so back to the garage that fitted it I suppose. Would a CTS fault show upon VCDS?
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim. Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!). 
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#12
11th August 2015, 04:39 PM
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#13
11th August 2015, 05:42 PM
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When my stat failed recently the indicated temp climbed to 100deg plus as you would expect. However, when putting vcds on at home and starting the car, on one occasion the indicated temp showed a steady 95 when vcds show it steadily climbing to 100deg plus. I didn't manage to sort out why there was a discrepancy but it did occur on two occasions when I was trying to see if vcds could reveal any other defect. E.g pump or CTS failure. The stat is stamped as "87deg" so that is obviously when it should open and get the extra cooling of the radiator. The electric fan seemed to kick in at or around 97deg - a fact I ascertained when waiting for the engine to cool down when nursing the car back home after the stat failure. I.e. It would stop working when the temp fell below this as indicated on the dash instrument.
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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#14
11th August 2015, 06:10 PM
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Nothing on the VCDS scan, but I've not seen this behaviour before - the gauge usually sits at a very constant 90C. The pump and thermostat were replaced when the belt was done earlier this year, so if it's either of those, then it's a warranty job.
My suspicions are that it could be due to a sub-optimal pump that isn't coping with the slow speeds and extra load. Booked in on Monday.
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim. Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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#15
13th August 2015, 07:59 AM
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Had mine done now ...so will see how it goes. good luck with yours
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