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Gearbox rattle. - Engine & Ancilliaries/Gearbox - The Lotus Forums Jump to content
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Roger 912

Gearbox rattle.

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Ever since I have owned my 89 Excel, which is for the last 8 years, I have noticed a problem that if I try and accelerate briskly when the engine revs are below 3 000 there is a grumble from the gearbox telling me to drop a cog or back off on the gas.

As soon as the revs go over 3 000 the grumbling disappears. It does not worry me unduly as it has not got any worse and tells me to drive better.

Any ideas what the grumbling can be.

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My guess would be a vibration coming from the engine at high loads/low revs, and being transmitted to the gearbox.

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Check the rear gearbox mounting, the rubber may have gone on it, as in perished and soft.

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