astra mk4 juddering problem
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Thread: astra mk4 juddering problem

  1. #1
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    astra mk4 juddering problem

    hi, recently my astra mk4 1.8 sport has began to judder, almost like "kangeroo petrol" but nowhere near as bad. its most noticable at low constant speeds around town but gets fully worse if i'm in a car park in 2nd gear looking for a space, yet accelerating up through the gears or travelling at speeds of 50-60mph and the problem is completely unnoticeable.
    anybody got any ideas what the problem could be?

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  3. #2
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    tbh i dont know but have similar problems in my 1.4 16v. it did stop for a while when i started using bp ultimate (and other similar branded performance petrols) but since going back to regular has started again.
    I smile because I don't know what's going on.

  4. #3
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    you havent fitted a cone induction kit by any chance have you?

  5. #4
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    was gonna say its often induction related..

  6. #5
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    Thread Starter
    yes i did have a k&n cone filter but once this problem started i then changed it for a panel filter using the standard airbox, but it hasn't helped any

  7. #6
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    Does it happen more when engine is warm?, is the car hesitant on acceleration?, if so it could be the temp coolant sensor, cost about £10 and 10 mins to change. Faulty sensor tells ecu its cold, ecu pumps more fuel in = flooding. Mine had these symptoms and thats what it was mate. Only a guess though and its only a tenner wasted if it turns out not to be.

  8. #7
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    yes, that sounds hopeful, as it does seem worse after a longer run, cheers

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