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Thread: y20dth acceleration boost at 2500rpm

  
  1. #1
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    y20dth_gvan's Avatar
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    y20dth acceleration boost at 2500rpm

    Hi.
    I own a 2.0dti astra caravan. It has this 'jump' at 2500rpm where the car seems to gain tremendous power. This only happens at lower gears, at fourth or fifth gear it seems unnoticeable.

    Someone told me that this might happen if the maf-sensor is filthy. I took it out and sprayed the crc-cleaner inside the sensor (didn't take the connector apart as it was fixed with some opel-specific screws for which I don't have a bit), the behavior remains the same.

    The air filter is clean and there are no warning lights.

    The car feels responsive and accelerates decently.

    What could be the problem? Or, is there a problem to begin with.

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    alex1916v's Avatar
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    sounds like the turbo kicking in?

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    y20dth_gvan's Avatar
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    Excatly. I've read it starts to function at about 1600rpm or so. Are you saying it's normal for the turbo to have a jumpy boost at some point?

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    nry's Avatar
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    It probably depends on how hard you're pushing the car? My old TD Pug had the turbo kick in noticeably around 2500rpm - it may begin to spool up earlier than this, but it will havethe maximum boost higher up the rpm range.

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    Since it's noticeable even with low throttle I was wondering whether it was normal or not. I would've thought the turbo would gradually gain the maximum boost value rather than just plain jump to it at some rpm.

    I guess there's nothing I can clean to make it go away, thanks all!

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    jcastraDTi's Avatar
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    I have exactly the same with my Y20DTH, only happens every now and again and usually when its cold (when engine in warming up). Have changed my MAF sensor because it had become faulty but that still makes no difference.

    I dont think it is a major issue, just wish i could have that boost all the time
    No longer a Astra Owner
    Now Drives -2006 Skoda Octavia vRs in Race Blue

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    Unrealist's Avatar
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    The same happends to me after 2500rpm it's a diferent care with a big boost especially in th e 2nd gear, the 3rd to, I changed the MAF sensor, and it response to acceleration at low rpm changed but nothing amainzing and still the boost at 2500 rpm remaind, and like jcastraDTi said it feels especially when the motor is cold. I don't think it's a malfunction, at least I hope:P

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