Hi All, I recently bought a pretty old (51 plate) 1.9tdi with 106000 miles on. It has been great so far. I'm grateful to this site for the info on the auxiliary heater as we'd have taken it back to the garage thinking something was going to take off, without the comments on here. One thing I noticed recently though, on one of the rare occasions I get to use it (it's for the kids/dog and for those camping hols coming up instead of going abroad - I commute by bike), is it appeared to suddenly become gutless when I was on the ring road - very little acceleration, at all speeds. On the way home it was OK. I'm hopeful it is one of the myriad of sensors these vehicles seem to have, developed a loose or corroded connection that has started to play up. Can anyone back me up on this hope, and point me towards the likely culprit, or am I barking up the wrong tree? Any advice welcome, Many thanks, Martin