Another MPG thread

[pudding]

The rough running map is very effective at seamlessly carrying on like a trooper, in spite of losing a couple of limbs 

VCDS is a lot easier, but if your scan tool can show live data, you can do it that way if it can translate VW/Audi PIDs.  Where are you based?  Someone on here is bound to have VCDS near you.   You could ask the dealer to check it, but they'll bill you £100+ minimum for that!

[Mark_DF05]

Probably best getting someone with VCDS then. I’m in West Yorkshire, there’s a few people round here that have it so I’ll see if anyone fancies doing it for some beer money before going to the main dealer

[Mark_DF05]

Had the car scanned today, here’s the result:

14:34:42 Group 091: Camshaft Adjustment (Bank 1 Intake)
  720 /min  Engine Speed (G28)
  5.9 %  Cam. Adjustment Intake Bank 1
  28.0°KW  Cam. Adjustment Intake B1 (spec.)
  28.0°KW  Cam. Adjustment Intake B1 (act.)

14:34:42 Group 093: Camshaft Adjustment Adaptation
  720 /min  Engine Speed (G28)
  16.5 %  Engine Load
  -1.0°KW  Phase Position Bank 1 Intake

Not sure if that indicates a faulty sensor or not?

[pudding]

No that's all spot on, at idle at least.  Ideally we'd like to see a log of 91 over a short journey, just to see if 'spec' and 'act' match.

Try removing the cam sensor to see if it has a nice beard of metal dust on it.  If that's all clear, I think your first diagnosis of a lazy N205 valve could be the fix.

[Mark_DF05]

Great. Thanks for the help, much appreciated!

[Mark_DF05]

Finally got to the bottom of this, started to notice that the temp was fluctuating when driving under certain conditions so had the main thermostat replaced and the car is now as it was before.

Changing the n205 didn’t make any difference to mpg but was faulty and still needed doing as I’ve not had the fault code since.

[ali]

how much was it to get the main thermostat replaced

[Mark_DF05]

£200