406oc.co.uk

hi guys, been searching the forum without sucess so hope some of you experts can help. After some help from here I have got the car looking and running great, untill this morning. Went out and the car was covered in ice, so started her up to defrost the windows but it sounded as though it was missing. Set off, no power, anti pollution light came on and when I put my foot down it stalled, restarted it and sounded like it was only firing on 1 cylinder. Parked it up and left it a few minutes and started her up again and she ran perfect, smooth and quite. So any ideas, just been serviced 2 months ago.

It's a D9 2.0 petrol
cheers
Dan

First thoughts would be ignition system, plugs or coils. It'd be best to have the fault codes read since that would likely tell you straight off and you wouldn't be wasting money on unnecessary parts.

Alternative it could be a fuelling issue but since it was fine the second time I somehow doubt that.

Where are you based? There are a lot of people around the country with the PP2000 diag kit, I'm sure someone will help you out.

cheers for that, had a feeling it might be the coil packs , just had new plugs so I doubt it's them. Just ordered a pp2000 so will have a play with that when it arrives.

That's a good plan, the ECU is usually very good at detecting and being specific about ignition problems, so it should pinpoint the issue pretty well. I had my diag kit on a 2003 V6 coupe the other day and it showed a fault something like "Permanent fault: Misfire detected, cylinder 1, ignition coil failure".

I'm not very familiar with the petrol engines in the 406s, but whack your VIN into ServiceBox and have a look at the parts diagrams to get an idea of the system layout

Good luck!