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Originally Posted by procrj Any luck with the Limited slip differential Captain? |
RJ, no luck. EATON came back saying that they dont have an application for the TUV. PMed a couple of hardcore 'off-roaders' on the forum for advice. Nothing available for the TUV so far.
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Originally Posted by BattleTank POST 1 - Since yesterday there has been a low "woosh" sound each time I shift gears - only heard when the car changes transmission from between first or second gear. Not sure what that sound is.
POST 2 - Later on another SA walked up and told me that the sound is due to the new software update, installed post my second service just before Diwali. The sound is only heard when the gear is shifted from neutral to first and from first to second, when the vehicle is stationery and at low speeds on these two gears. He said it’s a known fact – that he has heard this from a few TUV owners. It was more of a feedback than a complaint. Another observation he pointed out to was at neutral idling the RPM meter stays at 1000 rpm, when I shift the gear from neutral to first, the RPM drops to around 800. So the SA said this dip in RPM primarily done to boost economy – is what the software picks up when I shift gears, resulting in the sound.
POST 3 - Dieselburner, I did change the modulators way back in Jan. The SA ruled out that the noise is not related to the modulators. |
BattleTank, the 'whoosh' noise is definitely from the Vacuum modulators. You mentioned that it was changed once. I have changed mine 5 times

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the last one being on 5th Nov, 2016. So I think the MASS should look no further. I, too, am experiencing the RPM drop from 1000 in neutral to around 850 to 900 once the gear is engaged. This happens without any 'whooo' noise, just that the engine note changes slightly.
I have written to M&M, and copied all the addresses I could get from the net, informing them that the Vacuum modulator of my TUV has been changed a number of times, and to find out the root cause for the vacuum modulators failing, instead of doing repeated replacement when ever the 'whooosing' noise crops up.
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Originally Posted by dieselburner My odo is around 28k and apart from this woosh sound and an annoying "thud" sound below the gear lever (it comes initially only when the vehicle starts in morning whenever vehicle crosses a bump/speed-breaker at a high speed and gradually decreases in the day, also this sound is more in winters as compared to summers. I bought vehicle in january and then this sound was there, in summers I never noticed this sound and now as the winter is around it has appeared again) there is no problem with the vehicle.
For the sound below the gear lever they told me to change the mounting which is not available with them when I got modulators changed. Hope they manage to source it by the time I go for 4th service. |
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Originally Posted by procrj Looks like I need to get my resonator & hoses changed during the 3rd service.
Apart from the knocking sound in the morning, there is nothing much to report on the way the tank is performing. . |
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Originally Posted by AutoIndian Folks this is common to all TUVs I believe. As you have mentioned I too hear this sound (under the handbrake lever), while passing a hump near my home the first thing when I leave in the morning. When the car passes over a hump something underneath the car is getting raised and touches a part just below the handbrake lever. I have not paid much attention to it and ignored till now. But if there is some solution to it, will surely want to get it rectified. |
Dieselburner, RJ and AutoIndian, with regards to the noise under the gear/handbrake lever, could you please confirm on the below.
1. Does this noise occur only when the engine is cold, that is - when you take the car out in the morning, or after a long period and the engine has cooled down ? (Engine temperature display shows just 1 bar)
2. The noise occurs only when the rear wheels go over the bump/hump. The front wheel going over the bump does not create this noise.
3. If you ride over the bump which the clutch disengaged (pedal fully pressed) you will not hear this sound.
If the answer is YES to all the three above questions, then it is the 'gear shifter assembly link' that is the culprit.
I was also experiencing this noise, and the M&M ASS

could not find out the cause. The car was with them for almost a week in total (2 visits). After a lot of trial and errors, which included replacing the entire clutch assembly, the noise stopped only after changing this so called LINK
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Originally Posted by AutoIndian The TUV's reflector design is very good and that is the reason, even the stock 55-60W lamps give sufficient illumination. |
AI, true the reflectors are good, so I did not increase the wattage but instead changed the bulbs to Philips Extreme Vision, which has a slightly whiter light with a longer throw that the stock bulbs.