Looking for a bit of advice here please guys before I possibly have to spend mega cash on my new CMAX.
Bought a 2004 CMAX 1.8 Zetec (Petrol) a short while ago with 68k on the clock.
I've started to notice that its hesitating sometimes when I put my foot down and that the rev's sometimes "stick" high when idling then return to normal. MPG has also been a bit lower than I would have expected, around 30mpg, on the couple of motorway runs that I've completed so far. No warning lights or anything on the dash to indicate any issues.
Took it into the local Ford dealers and had a Major service (plugs, filters etc) and it seemed to improve things a little but not completely. I've replaced all the coil packs thinking that it might be one of them breaking down but, again no luck solving the hesitation.
Anyway long and the short of it is I took it into the dealers this morning for them to have a look at it thinking it might be the Throttle body needing a clean etc and have been told that it needs a new PCM - £1400s worth of work
I really need some advice as to if there is anything else that could cause a fault code P0603 - PCM KAM error and what the hell it actually means as the guy on the service front desk didn't really know himself. What does the KAM memory actually store and if I have to drive the car for a month before getting it fixed is it going to cause more expensive issues.
The copy of the diagnostics sheet that I have says the following:
Description - P0603
PCM KAM error
Major memory corruption.
No more KAM data can be saved at key OFF or restored at key ON.
This DTC may be caused by :
Faulty or Damaged PCM.
If I have to pay out the £1400 then so be it BUT I really want to make sure that its 100% required before parting with that much hard earned cash. The annoying thing is that so far the car actually drives pretty well apart from this occasional hesitation and the low MPG.