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Originally Posted by phobos512
One thing I have done, and done repeatedly, is to eliminate my driving from the equation. Thinking that potentially my right hand was getting ahead of my left foot when this was all starting to become more repeatable, I conducted a test wherein, at decent speed (such that RPMs would be in the range where grinding is very likely) I held the clutch in completely, and then shifted from 3rd to 4th. And it ground every time. It doesn't do this in any. other. gear. I know 1/2/3 have more synchros than 4/5/6 which is why I have tried this in every gear and it only does it in 4th. I would think this would eliminate the potential for the clutch dragging as well.
It only happens at high RPM but it happens whether or not I'm driving aggressively. I gave all this detail to the dealer but I don't know what detail they gave to the tech. Looking at the service receipt I received upon picking the car up, it just says, customer reports grind in 4th gear; tech drove car and could not duplicate, vehicle operating as designed. I know they only drove it 5.3 miles and if what the girl at the counter told me is true they drove it at least three times to accumulate that distance, which again means that the transmission never reached true operating temperature, and it only grind when....it has been driving for more than about 10 minutes i.e. upon reaching operating temperature (trans, not engine oil). Again, they had all this info but I have way of knowing they did this.
I'm an electronics and systems engineer by education and trade - I know how to go about things very methodically, and while this is my first manual (car, as I have ridden motorcycles for 10 years) it's far from being my first vehicle, or the first vehicle I've modified. I guarantee that if the tech tests it appropriately, they'd have the same result, because I have, time and time and time again.
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Not blaming you, just listing in general what the causes would be (and exactly what the dealer is going to look at as well).
Get the tech to go on a ride with you while the car is hot and replicate the issue. Then let him drive it right after if needed.
Quote:
Originally Posted by phobos512
You're mixing notchiness and vagueness here - which aren't the same thing.
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Negative. True notchyness (NOT related to grinding) is how solidly linked the shifter is to the workings of the transmission. Most cars run rubber bushings to remove the feeling of the detents and other misc. parts moving around. It's a NVH thing and it seems they went for the slightly more connected approach on this car (which I enjoy since I'm used to shifters like this).