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Strange noise, possibly gearbox related


Andy_Mac

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Car has a noise that sounds almost like metal on metal grinding when coming off throttle. Regardless of type of driving, and seems to do it the whole way through the rev range, notice mainly down low since the engine's obviously alot quieter.

Notice it mainly in 1st and 2nd gear. Dissapears when clutch is put in too. So wouldn't say its engine related.

Been looking on nasioc and similar sounding issues have appeared there. They seem to think its lightweight flywheels/ over lightened machined stock ones.

Does that sound about right or just a load of uneducated chatter?

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  • 4 weeks later...

Have this deacceleration noise also, v7 sti all stock standard so don't think flywheel theory is a given.

Only started few weeks ago after not using car for 2 months.

Had a quick look on web myself and no sure fix. Some mention bearing in transfer case, mounts, heat shields, pilot bearing, tire pressures! Etc etc.

Will get a shop to look at it next service.

Please post if you find a cure for yours. Will do the same. Good luck!

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Have this same problem. Had a couple of mechanics have a look and output bearing has been mentioned. Going on prices a second hand gearbox will probably be cheapest as a strip and rebuild was eye watering and don't really want to be off the road for long. Could also be thrust/release bearing in the clutch? Just my two cents :)

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