Reliantman

Further to my post I now have some codes Engine running fault shows as: Fuel Trim Bank 1 Malfunction P0170 Immobilser fault: Engine start blocked by immobiliser P157Q Intermittent. Any advice as to what these codes actually mean will be gratefully recieved!

I am new here so not sure if I'm in the right place! Have recently bought a 2002 Fabia 1.4MPI Classic estate to replace my 1992 VW Polo in regular use ( this needs bodywork now, which will get done when I can, its all very original). The simplicity of the Classic trim drew me towards one, no electric gadgets, just as I like it. It has done just short of 60000 miles, and been stood a year or so, bodywork is excellent and underneath too. Its been serviced, and last week I took it on a 300 mile round trip, on a mix of motorways and normal roads, to collect some purchases. This revealed some problems that I had hoped a good run would cure. Although a pleasant car to drive, it seems very low on power and hesitant until it reaches about 60mph. The idle is also uneven and feels ready to stall. I know the car is a lot heavier than my old Polo, but it struggles on anything but the slightest incline without changing down. In all my cars I always tend to change up early ( about 2000rpm) and thus don't expect fierce acceleration but this feels very flat. Its had a diagnostic reader connected, that said " Fuel Bank 1" but that doesn't mean much to me! I'm more familar with contact breaker points and carburettors! The diagnostic also showed " intermittent immobiliser fault" which I had discovered after the car refused to start a couple of times with the immobilser light on - I didn't even know it had one as it doesnt have central locking. Has its proper Skoda keys though. Has anyone any suggestions, at present I am unwilling to trust the car any distance, and I bought it for longer runs that are unpleasant in my van ( 2005 Citroen Berlingo diesel)