Power cut on hi-torque acceleration

Discussion in 'Subaru Impreza' started by eamoex, Nov 7, 2019.

  1. eamoex

    eamoex

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    Hi All,

    I'm in Europe, have a diesel 2011 Impreza, has about 90'000 miles on it. Runs fine except for this power cut problem. Detailed symptoms:
    • When I demand for moderate to hard acceleration, RPM rises but power abruptly cuts between 1700 and 2200 RPM
    • The gas pedal is dead from that moment on
    • Ignition is still going, though, because:
    • As soon as RPM returns to 1000 (either because I coast and let the engine brake the car down to there, or because I disengage the clutch), the gas pedal is live again
    • It doesn't happen if I keep shy on the gas (i.e. not require much torque)
    • To describe it another way, it feels like it cuts when the turbo is supposed to rev up
    • Never happens in 1st gear
    • Can't make this happens in neutral

    About timing:
    • Doesn't happen when car is start-cold
    • Happens after a minute or two after engine start
    • Disappears after 10-15 minutes of normal driving

    Any idea what this could come from?
     
    eamoex, Nov 7, 2019
    #1
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