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#2
21st September 2010, 03:11 PM
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As Dezzy says. Screw driver to take of the air bog to throttle body pipe (2 jubilee clips). Allen key to remove the cover. 10mm spanner to take out no 4 coil and swap it with number 3. Replace air pipe and clear faults with vagcom, go for a drive and see if it moves to three. Do the same for 1. If it don't move, do the same with the plugs and see if it moves.
Which water temp sensor? You have 2. One in the head and one in the radiator I think.
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. 
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#3
21st September 2010, 03:12 PM
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As Dezzy says. Screw driver to take of the air box to throttle body pipe (2 jubilee clips). Allen key to remove the cover. 10mm spanner to take out no 4 coil and swap it with number 3. Replace air pipe and clear faults with vagcom, go for a drive and see if it moves to three. Do the same for 1. If it don't move, do the same with the plugs and see if it moves.
Which water temp sensor? You have 2. One in the head and one in the radiator I think.
__________________
Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light.
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#4
22nd September 2010, 09:57 PM
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thanks for the replies - re the sensor i think its the one in the head, but will check. As for trying it myself it looks pretty straight forward so I'm up for having a bash at it - only problem is the need to clear the faults with vagcom - I don't have it myself.
May consider just replacing the plugs anyway - if I still have the problem then its must be the coils but to check I can swap them as suggested and if it misfires then it would confirm and I can just replace? I know changing all the plugs is unnecessary but its got to be better than paying the dealer to do what seems like an easy job?
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#5
22nd September 2010, 10:46 PM
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Bad luck really and those prices are outrageous £400 for transfer box seal?? It costs £10 for seal and £240 at Audi dealer
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#6
22nd September 2010, 10:51 PM
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And yes for misfires swap coils and plugs around to see if fault follows them, failing that ignition amplifiers .
For the temp sensors- there are 2 one on each head, the one in the radiaor is just a simple thermo switch. No need to clear faults. If the fault is not detected in next time it will run fine as without fault just store the fault in memory. If fault does not show up again in 30 or 40 times the ignition is turned it will be deleted itself.
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#7
24th September 2010, 12:57 PM
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Great thanks for this - I'm going to give it a go this weekend!
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