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Old 19th December 2012, 17:57   #106
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Default Re: RPM shoots up when changing gears

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Originally Posted by aaggoswami View Post
Revs increasing suddenly without proportional throttle input is not normal. This is something wrong which somehow has found acceptance under the banner of many names. .....

Duster does not have this feature to the best of my knowledge, else this would come up in multiple reviews that I have read..... Sudden acceleration due to mats is not likely as it would actually hamper full flooring of throttle.......

The most likely possibility that comes to my mind is that the engine was cold and ECU was trying bring engine to operating temperature and hence increased the RPM. ......

Take the car to A.S & S. Duster is too new a product to research and arrive at conclusions. Its just not correct to have a car out of control due to unintended acceleration. There is something not correct, be it throttle pedal design, floor mat design or anything, but at the end of the day, this unintended acceleration must not happen ever again.
Thanks aaggoswami, The car is with the service guys right now, I'll get a clear reply tomorrow hopefully. I did not have a repeat of the spontaneous revving after that one incident. I guess you are right, it has been cold these days and I had just gone about a kilometer and had to downshift to overtake a bus that suddenly slowed down. Perhaps I depressed the clutch too suddenly, something I can't recall. I'll wait for the service center's verdict.
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Old 19th December 2012, 18:12   #107
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I had this problem in my old car in the 90's - Opel Astra. It's been a decade & half. Well the problem is the ECU. Please get it rectified at the Service Center. If it repeats again, try to get it rectified as soon as possible, since the vehicle is under warranty.
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Old 19th December 2012, 22:01   #108
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Default Re: RPM shoots up when changing gears

In my ikon this was happening , It was an issue with the ground to the VSS , ECM and IAC , The shared a ground point and that was broken.

Just fixed a new ground point and back to stable idle and no hanging of rpms.
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Old 23rd December 2012, 00:16   #109
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Default Re: RPM shoots up when changing gears

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Originally Posted by 1self View Post
You ARE supposed to lift your foot off the accelerator when changing gears. When you push the accelerator while changing gears, there will be a point when there is no load on the engine. Then the revs will rise suddenly.
Thanks for replying.

Yup, I do take of care of that.

First : When the RPM shoots then I do not depress the accelerator to an extent that it shoots up. So without the accelerator being depressed more than it was earlier it should not shoot.

Second : This problem is being noticed lately. So if it was related to my driving style it should have been there from day 1.
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Old 23rd December 2012, 02:46   #110
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Default Re: RPM shoots up when changing gears

Can't edit so another post.

Looks like its common but is disguised under another problem

http://www.team-bhp.com/forum/techni...pressed-4.html (RPM shoots up when clutch depressed)
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Old 3rd February 2013, 03:23   #111
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Default Re: RPM shoots up when changing gears

Got the issue fixed. It was the clutch.

Off late the suddenly the RPM would rise. Earlier it was after a gear change only. Moreover the pickup was gone. Decided to show it to the service centre as it was due for it's 3rd year and 20K service.

Got the clutch, pressure plate, flywheel, throw up bearing and a ball bearing changed.

Ball bearing and flywheel could have been reused but looking at the labour costs and individual price of the components I felt it would better if I got the whole thing changed.

Coupled with the service, with a 25% discount on labour (with some other things to be changed) the total cost came to about 8K. Out of which I guess clutch consumed around 5 - 6K.
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