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Ecoboost (B7DA) - Acceleration Judder in Incorrect Gear

Maunzer01
Maunzer01
in Ford Focus Club

Featured Replies

Hi,

I recently bought a 2019 ST Line Focus with the 125PS 1.0 Ecoboost (B7DA) engine and a 6 Speed Manual and no issues with it (100,00 KM/62,000 Miles)

Previously 

  • I had a 1.4i 96 Civic for 5 years
  • Then a 06 1.6 Zetec Hatchback Focus which I had for about 15 years

With both of those cars if you were in the wrong gear as such e.g. 5th Gear in the Focus at 30 mph you could still put the foot down and it would accelerate away albeit slowly 

However with the Ecoboost and it's only happened twice to me where I've let's say been in the wrong gear (so completely my fault) at a low speed (So lets say 2000 RPM range) and then you put the foot down and get a judder (once you drop down gears it's fine)

  • So is the Ecoboost just that unforgiving a combination that this would be expected
  • Or is there potentially something I should get checked out  

Thanks

  • Quote


    Hi Ciaran, 

    It sounds fairly characteristic of downsized turbocharged engines generally, not just the Ecoboost.

    I had a 1.0 Fiesta for 5 years and found it was only happy at 2,000 rpm or more, unless in a low gear, going downhill, or coasting. 

    Road test review here: https://www.autoexpress.co.uk/ford/focus/104441/new-ford-focus-10-ecoboost-review

    which includes this comment:

    "Below 2,000rpm the engine is a little hesitant, but beyond this it spins cleanly to 6,500rpm."

    You've been driving normally aspirated (non-turbo) cars for the last 20 years, so I'd say you just need to give it time to get used to something pretty different. 

     

     

     

     

     

     

  • Quote
    • Like 3
    13 hours ago, Maunzer01 said:

    this would be expected

    Agreed that this is normal for the EcoBoost. No power and lots of engine shake in too high a gear at low revs.

    The various power versions of the EcoBoost vary a bit in their preferred revs but I wouldn't expect the 100ps version to accelerate below 2250 rpm, the 125ps version below 2000 rpm or the higher powered versions below 1750 rpm. I find that the green arrow to change up a gear comes on a bit to early. You soon learn to adjust your driving style to suit the engine.

  • Quote
    • Like 3
    • Author

    Thanks Eric and Pcaouolte

  • Quote
    • Like 1

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