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Mondeo 2.0 GLX Auto - 4000 rev misfire - John Britt

Have the above vehicle, and it has a mystery misfire only at 4k revs. Have changed all manner of common sense items as I have a donor vehicle, but all usual remedies fail. Fuel pressure, airmass meter, plugs, checked CAT, etc, etc, anyone have any similar experiences? The car is a mk2 auto, and when driving/running at anything less than 4k all is smooth and it's driving well, on increased acceleration over 4k, the engine simply pulses and this affects the auto box, changing it up and down.

Edited by John Britt on 20/10/2010 at 14:00

Mondeo 2.0 GLX Auto - 4000 rev misfire - injection doc

needs a diag check ? Does the speedo work ok ? cam sensor ?