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    Why does my 2013 Hyundai ix35 feel sluggish?

    Hyundai Hyundai Advice Hyundai IX35 Hyundai IX35 Advice Hyundai IX35 2013

    I recently had a problem with no acceleration when my 2013 Hyundai iX35 goes up a hill. It loses all power no matter what speed you are doing and is very sluggish when changing gears (auto) and the revs are high. I have dumped the transmission fluid twice and it’s still black. Anything else?

    Answered by CarsGuide
    22 January 2023
    David Morley

    It sounds like you’re on the right track with the transmission, Melissa. Transmission oil goes black when it starts to pick up bits of burnt clutch and band material shed by the gearbox’s internal parts. If that’s happening, there’s also a good chance that the transmission is worn and that’s causing the lack of acceleration and slipping you’re experiencing.

    This sort of problem can be caused by low transmission fluid levels, a worn out pump or just plain old wear and tear. A check of the torque converter’s health would also be a good idea, but on the surface, it sounds like the transmission is ready to be rebuilt. Have the vehicle scanned and see what faults – if any – are thrown up by the computer. It could be something simple, but the black transmission fluid tends to tell a different story. It should be a nice, clear red colour.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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