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Diagnostic code P0351, Peugeot to replace coils and sparks to cure juddering

Doublebubblelover

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Hi, as newbie RCZ owner who has just hit a snag, I wonder if anyone can help?

Last weekend my 2012 RCZ1.6 200THP with only 40k on the clock suddenly had the EML light come on and juddering on acceleration.

The RAC came out and put a new coil in cylinder 1 but this didn't solve the problem, so they towed me to a main dealer.

The main dealer said the diagnostic code was P0351, a misfire on cylinder 1. They swapped the coils for 1 and 4 and found that the misfire moved to coil 4.

So they are suggesting replacing all 4 coils and sparkplugs, at a cost of £420, and then see if that solves the issue, and if not, then clearly the bill is going to climb. So i'm thinking of replacing the coils and sparks myself for half the cost, elsewhere.

Other symptoms were the fan goes like crazy when you turn off the engine. I also may have overfilled the oil recently!

(I'm not a car specialist by any means, and just love my RCZ, but don't have an endless supply of cash to keep throwing at the problem in the hope that eventually it'll be fixed. I'm surprised that the main dealer can't find the root of the problem and then quote me the amount to fix it.)

Any help or advice VERY gratefully received.
Thanks
 

Pedro

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On the Prince Engines Unfortunately its strongly advised you change all 4 plugs or coil packs together mainly due to the fact if one is failing the others won't be too far behind so better to be safe than sorry as for the fan the ECU has detected a combustion fault which may interfere with the wrong Engine Temperature readings being sent to the ECU thus the fan can be triggered to save overheating etc
Coil packs can be had for around £20-25 each depending on which sort you choose but I would bite the bullet & install the Bosch ones I fitted NGK plugs In my 200 with no issues & they perform very well regarding overfilling the oil level its not advisable as it causes all sorts of issues which can harm the functionality of the Engine with excessive Oil being burnt & fouling the plugs etc
 

Doublebubblelover

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On the Prince Engines Unfortunately its strongly advised you change all 4 plugs or coil packs together mainly due to the fact if one is failing the others won't be too far behind so better to be safe than sorry as for the fan the ECU has detected a combustion fault which may interfere with the wrong Engine Temperature readings being sent to the ECU thus the fan can be triggered to save overheating etc
Coil packs can be had for around £20-25 each depending on which sort you choose but I would bite the bullet & install the Bosch ones I fitted NGK plugs In my 200 with no issues & they perform very well regarding overfilling the oil level its not advisable as it causes all sorts of issues which can harm the functionality of the Engine with excessive Oil being burnt & fouling the plugs etc
Thank you for the advice, I shall proceed as you stated!
Much appreciated
 
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