Just bought Audi A8 4.2 D2!! Some problems though help!

Just bought Audi A8 4.2 D2!! Some problems though help!

Author
Discussion

mazm3

Original Poster:

42 posts

137 months

Wednesday 22nd October 2014
quotequote all
Hi all, So ive always had BMWs over the years, still got my newly restored e36 M3 GT (wouldnt part with that!) and have just bought my old Audi back from a member of my family (i had it about 5 years ago when it was perfect) and it now has some odd issues.

Its a 1996 Quattro 4.2 V8 but its currently a V7 running without a cylinder. If i loosen ll coilpacks and lift them up slightly whilst the car is running i can hear the clicking noise of them sparking but on number 1 cylinder i have no spark/noise. Ok, easy fix just a coilpack? Wrong! Didnt cure it, nor did swapping over the one from cylinder 2. So, it seems i have a problem with the plug/wiring that goes to it. Any known wire problems for this issue?

Second issue is the blowers dont work at all. The climate control lights up and so do the dashes on the fan speed but no fan. Have read somewhere if it has the solar sunroof its the module on the steering column? Can anyone shed some light please?

Lastly, i remember from whn i had the car last the interior would never get that wrm from the blowers. Seeing as i cant test this at the moment is the anyhting common for this issue? The two pipes that pass throuh the bulkhead are both hot BTW with car running/

Thanks in advance

Adrian E

3,248 posts

175 months

Thursday 23rd October 2014
quotequote all
Best bets are standard fault finding for the loss of 1 cylinder - does it have a spark at the plug, is there fuel getting to it, does it have any compression? If it's been run like that for ages it could be beyond salvation if it's been bore-washing the cylinder and diluting the oil...

Ref the climate issues - unlikely to be linked to solar roof. There's one wire going from the fuse board in the passenger footwell to the climate module which just tells the module whether to draw power available from the roof and divert it to the fan motor. You could try pulling the relay for the solar roof (can't remember the number but it's in the front footwell and the manual should tell you which it is) in case it's failed one way and is preventing it working when the car is being driven. Does the fan run if you light up the solar panel when the car is parked? Probably tricky to tell now without shining some substantial work lights on it!

Other option is failed motors/fan unit. Both are fairly common and a fault scan should pick up any obvious ones.

mazm3

Original Poster:

42 posts

137 months

Thursday 23rd October 2014
quotequote all
Thanks for the info. I have solved the misfire,traced it to the ignition amplifier! Very pleased to be back on 8 again!

Will look into the blower issues..