2nd gen Prius - could a misfiring cylinder cause additional shaking / noises when engine turns off?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by bnjmn.id, Mar 7, 2025 at 1:52 AM.

  1. bnjmn.id

    bnjmn.id New Member

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    Title. '06, 94kkm. The engine feels a bit rough at idle but is fine at speed. Feels a lot like ignition coil failure on a previous Toyota of mine. Haven't replaced the coils yet until I can test the current coils. Stranger issue is a stronger-than-normal shudder when the engine stops. Feels like a weight spinning around and then coming to rest over the course of about a second. Sometimes happens, sometimes not. Can coincide with a clunking noise from the transaxle(?). I'm afraid that it might be a bigger issue than just the coil. Chances they're related?
     
    #1 bnjmn.id, Mar 7, 2025 at 1:52 AM
  2. MAX2

    MAX2 Active Member

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    The coil may or may not work, but it cannot work only in some engine modes. A non-working coil never works and the engine will shake in all operating modes.

    Carry out preventive maintenance, inspect the condition of the spark plugs, cylinders, throttle valve, air filter, air filter box and air hoses.
     
    #2 MAX2, Mar 7, 2025 at 1:59 AM
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