Poor fuel economy, Auto problem ?

[crossy999]

Over the past 4 months the fuel economy on my td5 has declined, it used to be around 13L/100klm but now I am getting around 16 - 17L/100klm.

The MAF readings look normal (60 at idle, 550 under load) and the engine seems to run ok and pulls happily up hills.

so... I tried a stall test, the nanocom idle reading stabilised at 2940rpm, now this would appear to be a bit higher than normal (around 2800 I think?).

So my question is, a) do I have a TC problem coming my way and b) at this current stage would it account for the poor fuel economy ?

The auto fluid was changed 12 months ago (12,000K's) and hasn't done much work, the fluid level is good. car has 160K on clock...

Any other ideas about where to look for those extra few litres of diesel would be appreciated ;)

crossy

[slug_burner]

Any black smoke?

Is there diesel in the engine oil sump? Is there any diesel stains on the driveway or on the sides of the engine/ You may have a leaking fuel.

Unless you feel that the auto is not changing or locking in I'd concentrate on the engine and fuel lines.

[crossy999]

There was some black smoke at take off when running a stage 1 map but have now rolled back to the stock standard map & no more smoke. btw, fuel economy unchanged between either map.

Sump level is good, sits dead on high with minimal loss between changes & unfortunatly no apparant diesel leaks or stains on the ground (that would be too easy...)

I will be happy if it's not the auto, just seem to be running out of ideas...