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    Why has my 2019 Hyundai Kona been losing power?

    Hyundai Hyundai Advice Hyundai Kona Hyundai Kona Advice Hyundai Kona 2019
    ...

    My 2019 Hyundai Kona has done 194,000km. Can you explain why, for the last year, the vehicle has started losing power when slowing and conking out? It will start up and run okay for a while then do the same again. It has been inspected by an auto electrician and twice by a Hyundai dealer.

    The Hyundai dealer replaced the crank angle sensor, but I had the same problem. The second inspection said it was a timing chain issue and would require replacement of multiple parts including both manifolds at a cost of $5500. I am seriously sceptical.

    Answered by CarsGuide
    14 January 2025
    David Morley

    I can understand why the crank angle sensor was the first thing to be changed. These often start to die and the first symptom is an engine that stops after running for a while. But you’re right to be sceptical about the timing chain as there’s a theory that says if the engine runs properly at all, then the issue won’t be anything fundamental. Which is to say, if the timing chain was stretched beyond the point at which the engine could function properly, it wouldn’t function properly at all, regardless of how long it had been running.

    A good workshop should be able to scan the car’s computer. If the timing chain really is stretched, then the computer should have logged this as a problem. If not, then you’re looking for something else. Of course, what that something else is the million-dollar question. Don’t rule out basic things like a dirty fuel filter which can allow fuel to flow for a while before the rubbish in it clogs the flow after a few minutes running.

    That said, if the engine can’t locate the correct signal from the camshaft (which is controlled by the timing chain) it will sometimes look for a stand-in signal somewhere else on the engine, allowing it to start but not run properly. An electronic scan is definitely the way forward.

    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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