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Vibration and Groan after Auto Start/Stop

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Vibration and Groan after Auto Start/Stop

 
Old 03-12-2019, 01:37 PM
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Vibration and Groan after Auto Start/Stop

I was wondering if you guys might try this in your car. The engine is fully warmed up and you come to a complete stop. The engine shuts off. If you lift your foot slightly, where the engine fires up again, but you are still stationery, can you check if after 2 seconds or so, the engine will groan and make this odd sound, and send vibrations into the passenger compartment?
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Old 03-12-2019, 10:41 PM
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Maybe vibrations from the torqu converter?
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Old 03-12-2019, 11:34 PM
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I think this may be common but people miss it because you usually accelerate after the engine fires up so you can miss this entirely. I forgot to mention it lasts for about 2 seconds and then returns to normal. It reminds me of when you turn on an AC compressor in an old car, and how it puts additional strain on the engine.
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Old 03-13-2019, 02:05 AM
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Both my cars do that, I think it's powertrain backlash. Have got use to it. It really does it if I stop and put the car into reverse
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