My 2001 2.0 147 has started to do something odd in the past couple of weeks. When I'm driving along at a constant speed it feels like i'm lifting off the accelerator every so often, when I'm definitely not! It just does it for a second or 2 but the revs dip slightly. Also, if I'm coming up to a junction and lift off the accelerator completely to coast, the revs seem to drop more quickly than they used to.
This has only started happening since I had car in garage getting power steering pipes changed, though i can't see how this can be related.
I know its not a major thing, just worried a bigger problem is brewing! Does anyone have any ideas?