2006 automatic 350z shifting
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So I have an automatic 350z and it seems when I use the sport mode and manually shift at 2000-4000k rpm it tends to shift really hard and “pop” into gear in a sense. I was curious if by letting of the gas in between shifts would cause any wear and tear on the transmission because by letting off gives me a more smoother transition. If anyone knows anything lmk I would really appreciate it 🤙🏻
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So I have an automatic 350z and it seems when I use the sport mode and manually shift at 2000-4000k rpm it tends to shift really hard and “pop” into gear in a sense. I was curious if by letting of the gas in between shifts would cause any wear and tear on the transmission because by letting off gives me a more smoother transition. If anyone knows anything lmk I would really appreciate it 🤙🏻
Yes, there are mechanical reasons that could be the underlying cause as well but if your car hasn't had the fluid changed in a while, might be a good, inexpensive place to start.
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I have an 06 auto as well and wondering the same thing! I shift pretty smoothly at anything below 3,500 RPM but anything above that and I get that "bang". Letting off the gas while shifting gets it a little smoother, but I would also like to know more about this!
Edit: Only going from 2nd to 3rd gear I get the bang, rest of the gears shift nicely.
Edit: Only going from 2nd to 3rd gear I get the bang, rest of the gears shift nicely.
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I get it as well for hard shifts, not often. I have 156K Miles. It rides nice though, but as for me... I'm purposely being neglectful to the AT so I can blow it and swap in a MT. But it does make me wonder what that is about. I have an 07'.
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Question remains, what is the bang noise.
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You may have answered your own question. By neglecting to change the tranny fluid and making it maintenance-free, there's a high likelihood you're damaging some of the valves in your automatic trans body. Wear and heat will breakdown any fluid over time.
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Letting off the gas shouldn't hurt the transmission but the sharp shift shouldn't either. If I am remembering correctly the manual mode disables or bipasses some of the smarts in the transmission. In auto mode it controls the clutch engagement to make it smoother. It's part of the "learning" the transmission does if you disconnect the battery and why the shifts might be a little faster and harsher if you reset the transmission. I think manual mode engages the clutches as fast as the valve body is designed to do. It feels harsh at low rpm but also feels correct once your above ~4500rpm. It is a manual mode so play around with rpm shift points and how you let off the gas to get it smooth. Generally I don't drive it in manual mode unless I'm driving it aggressively.
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Letting off the gas shouldn't hurt the transmission but the sharp shift shouldn't either. If I am remembering correctly the manual mode disables or bipasses some of the smarts in the transmission. In auto mode it controls the clutch engagement to make it smoother. It's part of the "learning" the transmission does if you disconnect the battery and why the shifts might be a little faster and harsher if you reset the transmission. I think manual mode engages the clutches as fast as the valve body is designed to do. It feels harsh at low rpm but also feels correct once your above ~4500rpm. It is a manual mode so play around with rpm shift points and how you let off the gas to get it smooth. Generally I don't drive it in manual mode unless I'm driving it aggressively.
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My 2006 Grand Touring has always shifted hard (like a custom valve body). Is the stock unit beefed up or could I have a custom valve body? I'd ask the guy I got it from but he seems to be clueless... All useful input appreciated!
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Wait are you talking about when your driving in triptonic? Because if your driving in tiptonic and you go from cruising to WOT sometimes the system freaks out and gives a hard shift if that’s what your talking about
Last edited by Oz33; 03-25-2021 at 02:55 PM.
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When I drive it in auto mode and just nail it, the downshift is pretty brutal and the upshifts are "banging" as well. I had the fluid changed last year but not sure what he used. Just feels like some of my old muscle cars with a racing valve body in it. Hate to have to tear it down just to find out what is in there... If I start off and just nail it, I'm chirping the tires thru three shifts.
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When I drive it in auto mode and just nail it, the downshift is pretty brutal and the upshifts are "banging" as well. I had the fluid changed last year but not sure what he used. Just feels like some of my old muscle cars with a racing valve body in it. Hate to have to tear it down just to find out what is in there... If I start off and just nail it, I'm chirping the tires thru three shifts.
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