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Slight Judder On Light Acceleration


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#1 lipso

lipso

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  • Name: joe
  • Ford Model: Focus 1.6tdci estate
  • Year: 2008
  • Location: Donegal

Posted 24 August 2013 - 09:40 PM

I have an 04 fusion 1.4tdci with 117k - when driving roughly between 45 to 50mph in 5th gear uner light acceleration there is a noticeable slight judder - it stops if I decelerate or accelerate harder.Also noticeable in other gears when driving fairly slowly and with minimal acceleration.

Otherwise the car drives fine - it feels a bit similar to 'hunting' in a petrol car

Have read a few posts about similar problem but no solutions



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#2 Gombal

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  • Name: Arjen
  • Ford Model: Fusion
  • Year: 2004
  • Location: Other / Non-UK
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Posted 24 August 2013 - 10:36 PM

Still have a fully functional EGR? Used to have it but since i blocked the EGR valve it is gone (still have a 6 mm hole in the plate, gonna replace it with a full plate).

I can now accelerate from idle engine speed without any hesitation or judder. Drives a lot nicer this way.

Think it's because the engine gets exhaust gasses through the EGR when on partial load and doesn't like it. Same as we would breath in a bag so we would breath in "used" air with just a little hole for fresh air, we wouldn't like it either.




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