Replaced the battery on my car today, started it up and it now idle's badly. It swings between 300-1100 RPM. Whilst driving, the car seems ok, although the auto change seems a bit different??. It feels like it's going to stall at junctions, and when off throttle it nearly dies.
I think we all know it ain't a good idea for your engine to stall or fail at speed if your cars got PAS....

Has anyone had similar problems, or suggest a fix please.