Alfa Romeo Giulietta - Grinding/Knocking sound when coasting | Technical matters | Back Room Forum

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Wed 3 Aug 2016 23:09

Alfa Romeo Giulietta - Grinding/Knocking sound when coasting - Craig Irving

I've started getting a grinding sound coming from the front passenger side of my car when coasting and the occasional knocking sound when changing gears. As soon as the clutch or accelerator is pressed the sound goes away. This came about all of a sudden a couple of days ago after pulling away from a junction. I've taken it to a garage since then where they couldn't hear or see anything wrong with it though. From what I've read it sounds like it may be the input shaft bearing but I don't have any knowledge on the matter. Has anyone experienced anything similar or have any ideas as to what it may be?

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Fri 5 Aug 2016 09:55

Alfa Romeo Giulietta - Grinding/Knocking sound when coasting - hardway

I've had some pretty horific noises come from wheel bearings,

One sounded like a cat being stabbed!

When I stripped the bearing out there was a chip in just one of the ball bearings in the race.

Sometimes it made the cat stab noise sometimes it didn't.

Intermittent.

And way cheaper than a gearbox rebuild.

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