Two weeks into owning my 57 plate 159 3.2 I've hit my first worrying problem. The EOBD light started flashing at me while I was overtaking, just after changing from 4th to 5th. I slowed down took it easy and the light went out. A few miles on and still accelerating very gently, changing from 2nd to 3rd, the light came on again and I experienced some nasty juddering as the revs climbed from 2000-3000. Light went out again after about 5 seconds. This really worried me so as soon as I could I pulled over, checked all the fluids (all fine) and looked up the symbol in the manual. Flashing means a possible problem with the cat; the manual says you can still drive the car but 'moderately', which I proceeded to do for the next 200 miles (I was a fair way from home!).
Towards the end of my journey I figured the car seemed normal enough (and I was rather bored driving like a granny
) so decided to give it a bit of welly and see if the light came on again. No light, but I did get occasional flat/laggy bits while accelerating, much like turbo lag. Not sure if I only noticed this though because I was looking for it.
I called my local Alfa specialist today and they said it might have been the cat "regenerating". However, despite searching the interwebs I cannot find anything about catalytic converters regenerating themselves? I know some kind of regeneration happens with the diesel 159s but thought that was just a diesel thing?
Anyway part of the reason I'm concerned is that in the first week of owning the car I scraped the engine floor pan on a speed bump. I wasn't going very fast but at that point I hadn't realised how low the nose of the 159 is with that heavy v6 lump. Now I take them at about 5mph
The car's going in Friday for the codes to be read, but should I be worried?