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Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - NickRL

I'd be very grateful for any advice please.

On driving off the car started juddering as if it was the clutch, but the engine light came on and it continues to run roughly, sounding like it's running on three cylinders.

It's at its worst when pulling off from a standing start - juddering badly and a slight clattering noise. I've driven it about four miles since it happened, but am obviously very relectant to use it again.

I'm wondering if it is linked to a problem that it's had for 18 months or so, which I always though was the clutch and idling issue - slight clutch judder when pulling away from standing start (only when cold) and it being very difficult to change gear (particularly 1st to second) without riding the clutch - as if when you depress the clutch the revs drop but then momentarily race again making it seem like the clutch is slipping. I thought this might be a slight oil leak onto the clutch / fly wheel which burned off once it got hot, so I had it checked and all was OK.

I'd really appreciate any help - if it might be a common fault (I've driven several petrol Zafiras and one Astra and every one had a difficult clutch, or what seemd like that).

Thanks very much

Edit - 62,000 miles on the clock, by the way

Edited by NickRL on 24/08/2018 at 20:41

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - elekie&a/c doctor

"sounding like it's running on three cylinders." Probably is ,due to worn spark plugs or a faulty coil cassette.Very common on these.

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - NickRL

Thank you!

I'll check the plugs tomorrow, will a coil failure show up as specific fault code?

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - elekie&a/c doctor

It may well do,,depending on what diagnostic kit is being used. Ususally cylinder misfire dtc P03xx .

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - NickRL

Thank you!

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - NickRL

Managed to borrow a diagnostic tool - the engine light had gone out by itself, but there was a pending error code showing - P0302, which I believe is cylinder 2 misfire.

Would you say that the likely cause is the coil pack, or could it be something else please?

The plugs look OK. The coil pack looks OK too, but had some slight condensation on it.

Thank you

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - Railroad.

will a coil failure show up as specific fault code?

Not likely unless the fault is with the primary circuit either open or short. If the coil is tracking internally, or if the secondary windings are open or short circuit the ECM would have no way of knowing .

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - NickRL

Thanks very much!

Swapped plugs, but still the same, so have ordered a coil pack - fingers crossed it's that

Vauxhall Zafira B 2014 1.8 petrol - Running rough, engine light on, juddering - NickRL

All sorted now - it was the coil pack, but I changed the plugs as well anyway.

The problem it had with erratic idling when revs first drop has stopped too.

Many thanks for the help!