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I have a 1.2l Vauxhall Corsa D (62 plate) that has done 63K miles. A problem has developed over the last day or two that is becoming a concern, and has got worse over the last 24 hours.

Whilst accelerating in 2nd and 3rd, the car stutters and judders, losing revs and slowing slightly. This goes on for the whole journey. When it happens badly, the malfunction light flashes, and if i ease off the accelerator, it stops, but there is still a slight hesitation in the engine.

About a year ago, the coil pack was changed, the symptoms at the time were similar but nowhere near as bad, and the light never came on.

Any ideas? I've read it could be a faulty lambda sensor, or MAF.

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A flashing check engine light means you have an active misfire. Driving your car while misfiring for an extended period of time can cause damage to your catalytic converter, so try not do do that.

Studdering/juddering or however you want to describe it is also a definite sign of a misfire. Suspecting the coil(s) or wires is good, and that should be your first area to troubleshoot.

  • Hmmm. and I was thinking dirty/blocked fuel filter. – zipzit May 2 '16 at 18:13
  • Not saying this is the only, or right answer, but with a misfire, it makes sense to check the fire part first. – JPhi1618 May 2 '16 at 18:14
  • Fairly certain there is no fuel filter on a Corsa D... spent a while investigating this last year. – stezzle90 May 2 '16 at 18:16
  • @JPhi1618, you da man! (I have absolutely no clue what kind of car or vintage this is. I presume a 62 plate means its from 1962? Sort of like a California Mustang with blank and orange license plates?) – zipzit May 2 '16 at 18:16
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    @zipzit I think a 62 plate means a 2012MY car. – Ben May 2 '16 at 23:23

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