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For Sale and Wanted - Cars For the sale of whole cars, Audi or not, working or not. No cross links to other peoples cars please - Use Spotted online instead |
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#11
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Quote:
All that aside in the past, good luck with sale was a nice example of one!
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Audi S8 D2 #ronin - Cedar Green Abarth 500 Esseesse - Sold RS6 Avant Black - Stolen Mercedes Benz CLS 500 - Sold Corsa VXR Nurburgring - Sold RS6 Avant Grey - Sold Seat Leon Cupra R - Sold |
#12
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Funnily enough, your near neighbour (me) also has a similar cooling issue. I can run it on idle all day and it stays at 90. And out on the open road it sits at 90. But then, if I slow down in traffic or climb a steep hill, the temperature rises. Or if I then sit back at idle it also rises. And it started to happen after a belt change (with a new thermostat). It was very unnerving initially, but eventually I let the temp rise - it goes up to around 100 and eventually it falls again. It’s been like that for a couple of years an, inititially I was doing a 75 mile daily commute.
Not sure if anything would show up on VagCom, but if you fancy a careful drive to Redmile, I’ll plug it in for you (I’m up to my ears in decorating, so can’t come to you just now).
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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!). |
#13
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I have to confess to rarely, if ever, looking at the temperature gauge. But given that at 100C the needle is vertical I would probably assume that was pretty normal.
A quick rummage online finds: Quote:
I think the VCDS measuring method for thermostat and CTS is shown here: http://wiki.ross-tech.com/wiki/index...3/P2181/008577
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! Last edited by HPsauce; 22nd February 2018 at 10:30 AM. |
#14
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Thanks for the offer. I do have vagcom so can take a look if it throws anything up. One thing is for sure I know something has changed. I’m paranoid like that and have always kept an eye on temps. It used to sit bang on 90 all the time, everytime.
If these cars have an auxiliary water pump for the cabin could that explain why the cabin stays warm even if the main water pump has failed? |
#15
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I'd take a look anyway, see what those temperature sensors are all saying.
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! |
#16
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These engines do like to run hot - 100 actual temperature measured by the ECU is fairly normal. The cluster actually obfuscates the real temperature and shows 90 from about 80 to 100 actual temperature. Not sure why Audi felt the need to do that on the 8 when the 4 and 6 of the same generation show actual temperature
Definitely worth having a look at what the ECU is reporting with VCDS. Its not inconceivable that the cluster could have started showing the actual temperature rather than normalising it to 90 all the time. Bizarrely (and completely irrelevant but mildly interesting), the climate control guesses at the engine temperature based on running time and load as measured by the cluster, despite it talking directly to both the cluster and ECU about other things, both of which are measuring the actual temperature |
#17
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My S8 does this as well, but only in warm weather when stationary in traffic.
The thing that cools the temp down when it hits 100 or 110C is your AUX exectric fan coming on, check it out next time it happens. I suspect the temp creeps up because the main viscous clutch fan has failed. I bet if we all replaced this it would be back to normal. Actually I am planning to replace mine with a main electric fan that comes on a bit lower than the AUX fan, which seems to wait until its over 100C |
#18
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The aux fan should always be on unless the AC is in eco mode. Its lowest speed is also controlled by the radiator switch, if the AC controller hasn't already turned it on. Medium speed is controlled by the second contact in the radiator switch (which in my case switches on the main electric fan), and the top speed is controlled by the cluster in 'oh ****' mode
Could be that the aux fan has failed - that's very common on the 4s & 6s. If its not running with the AC on then check to see if its seized. It can also take out the fuse under the passenger carpet if its failing but not actually dead yet. Add in a worn viscous clutch, and it could get quite toasty! |
#19
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Thanks for all your replies. I will check the viscous fan. However wouldn’t it overheat at idle even more than when in motion if a fan had failed? My mechanic that did the thermostat left the car running for 15 minutes and it was running when I arrived. We had a chat, I paid up, got in the car and still at 90. Only once driving on a bypass (so not in traffic) did it begin the creep up. That’s the opposite to what my brain tells me when I think of how engine cooling works.
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#20
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Out of interest, why was the thermostat replaced? Or was it just part of a major service along with belts etc.?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! |
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