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Old 14 Jul 2008, 08:34 am
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Default Honda City 4AT Grinding noise at certain RPM

Hi Guys,
I own a 2001 Honda City and at a certain speed (between 70-80kmph) the Auto transmission sometimes makes a grinding noise.

The noise goes away if I press the accelerator and move to a higher speed.
The sound persists if I continue driving in that speed and rpm range

Any reason why this should happen? Is it serious?
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Old 17 Jul 2008, 04:50 am
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Default Re: Honda City 4AT Grinding noise at certain RPM

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Old 16 Sep 2010, 03:14 am
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Default Re: Honda City 4AT Grinding noise at certain RPM

Is the car shifting smoothly from the 3rd to 4th gear [logically, it should be in 4th gear at the speed you mention] A grinding noise generally points to a deformity in the gear BUT given that it is intermittent and speed-related, I would suggest that you should go in for an gear-oil change [using a heavier brand of oil] and add a suppressant/ additive to the same. Companies like ABRO have additives which specifically address issues such as the one you are facing.
Further, you shall notice that there is a male-female type wire-connector link-up going to the gearbox .... open up this connector and spray WD40 on both the split parts and re-connect them. This connector is basically the sensor which tells the system when to upshift and downshift. If you can provide me with more specific details of the problem you are facing, I could probably help you further in this matter....
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