Hi folks,

I'm hoping that a kind person can point me in the direction of a solution to an annoying little problem my Superb has developed. I drive my Superb fairly conservatively, for around 30 miles a day and more at the weekends. During the cold weather the revs started doing a little dance when I started her. The revs would rise slowly to about 200rpm above tickover and sit there for up to 3 minutes and then drop. Doesn't seem to do much when she's hot, although it's happened the odd time. But the kicker is when accelerating slowly (such as moving off in traffic). The car is hunting, as though she's being starved of fuel, or someone is pinching the fuel line. If you accelerate harder the problem seems to go away. At cruising speed (55-60mph) there doesn't seem to be any problem. I bung in a bottle of Diesel Redex as often as possible. Are these problems connected or seperate, and is it an easy enough fix.

Mainly, I'm concerned incase something is about to go bang and land me in the sticky stuff. I love my Skoda, and I literally can't afford to buy anything else, so all suggestions are more than welcome.

Sorry, I should have mentioned that my Superb is a 2003 model with 140k on the clock, and a FSH.

VAGCOM is your friend here, but for an inspired guess, I would suspect either the fuel temperature transducer (more likely) or the coolant temperature transducer.

Both are cheap and easy to change.

rotodiesel.

Roto could be right with the sensors, you could also try a new derv and air filter, I notice you use Redex, this isn't a good idea tbh, better off with a good quality main agent treatment, as these will be the ones they use and they can't be chucking in cheap muck when they are charging the customer on top for an emissions service, I suspect if Roto is right it will be the fuel temp sensor, that's the one I'd start with as the coolant one doesn't seem to play the idle up, if you've used the Redex too often there is a possibility that the fuel filter may have rotted out inside, or simply if you've not had a new one it's blocked, if you do change it be sure to put the plastic collar on the new one or it won't sit in the clasp properly, to give you an idea at GSF the air filter is around £8, the fuel one is £16 ish and the sensors are £15 ish each.

Thank you gentlemen,

I'll have a goo at the sensors and give her a new air and fuel filter. I'll let you know how I get on.

Thanks again.