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Old 12-23-2005, 06:43 PM
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cvt
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Default For the 5AT guys...got a question

i notice that when i am in manual mode that when i come to a stop and the car shifts down to "1" i get an abrupt hault and a muffled 'bum' noise...is this normal??
Old 12-23-2005, 06:51 PM
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aonic
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No, i dont get that
Old 12-23-2005, 07:31 PM
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HighwaySpeed
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Originally Posted by aonic
No, i dont get that

+1
Old 12-23-2005, 07:38 PM
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Bubble
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i got it sometime. DId you have aftermarket exhaust or HFC or testpipe installed?
Old 12-23-2005, 07:40 PM
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when coming to a stop, what gear (in manual mode) are you in?

i get the thump/thud noise only when slowing down/stopping in 2nd. so if you slow down/stop in 3rd there will be no thump/thud and it'll automatically go to 1st.
Old 12-23-2005, 07:47 PM
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cvt
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yes i'm in 2nd...then it goes to 1st and i get a thump sound and a jolt (engine braking)...i have to exhaust or test pipe installed.

so is this normal?
Old 12-23-2005, 07:50 PM
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mgl
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Originally Posted by cvt
yes i'm in 2nd...then it goes to 1st and i get a thump sound and a jolt (engine braking)...i have to exhaust or test pipe installed.

so is this normal?
the test pipes or exhaust doesn't cause this.
i had this happen to me when i first got the z and it was stock.

i just learned to slow/stop in 3rd to avoid this.
Old 12-23-2005, 07:52 PM
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cvt
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i dunno it just sounds like it's wrong....lol..and i meant i have no exhaust or test pipes. i just don't know why the car downshifts so violently at 2 to 1 comming to a stop..but in auto mode i'm fine....weird.
Old 12-23-2005, 08:05 PM
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Z MANIA
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Mine doesn't do anything like that. I always down shift 3rd to 2nd when stopping, and the "auto" shift into first is smooth/ without noise or abrupt halting. Take it in to your Dealer to be checked.
Old 12-23-2005, 08:17 PM
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Paul350Z
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+1 I don't notice any odd things happening in the tranny while it's in the manual mode.

While you're on the line ... does anyone else notice a grind in auto from 1st to 2nd on the very first shift of the day? I'm letting the car sit for 30 seconds or so warming up and I drive it gentle for the first four blocks. As I leave the drive and start forward gently there is a definite grind for half a second or so before hitting second.
Old 12-23-2005, 08:30 PM
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mgl
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Originally Posted by Paul350Z

While you're on the line ... does anyone else notice a grind in auto from 1st to 2nd on the very first shift of the day? I'm letting the car sit for 30 seconds or so warming up and I drive it gentle for the first four blocks. As I leave the drive and start forward gently there is a definite grind for half a second or so before hitting second.

no grinds or noises when accelerating or shift up. the noise i hear in in manual mode and only happens when i'm in 2nd and am slowing or stopping. a thud occurs when the car automatically shifts to 1st. and this happens all the time.
Old 12-23-2005, 08:37 PM
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cvt
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Originally Posted by mgl
when i'm in 2nd and am slowing or stopping. a thud occurs when the car automatically shifts to 1st. and this happens all the time.
that's exactly what i'm talking about....have you done any tranny fluid changes?
Old 12-23-2005, 08:57 PM
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Yeah,I get that also. I think it has something to do with 1st gear no engaging quick enough when you downshift. Kind of like being in neutral for a split second and then the gear catches making the car suddenly slow down due to 1st gear engaging. Kind of feels like putting the car into drive after putting it in neutral while going over 65 or so. The only difference is that on the freeway to still want to keep moving but when downshifting to 1st your body is probably expecting to feel the car slow down. I think about this everyday when I drive.
Old 12-23-2005, 09:17 PM
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mgl
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Originally Posted by cvt
that's exactly what i'm talking about....have you done any tranny fluid changes?

nope.

this happened since i got the car.
i guess i'll bring it to have it get checked out before my warranty expires, just in case.

Last edited by mgl; 12-23-2005 at 09:38 PM.
Old 12-23-2005, 09:38 PM
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gumulri
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Originally Posted by cvt
yes i'm in 2nd...then it goes to 1st and i get a thump sound and a jolt (engine braking)...i have to exhaust or test pipe installed.

so is this normal?
that's normal
Old 12-23-2005, 09:48 PM
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cessna
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I dont get that.... but again, I dont have many engine mods"...... And thats with a G.....
Old 12-23-2005, 10:21 PM
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cvt
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i don't have many engine mods either...just an intake and pulley...but it seems a few people do experience it...
Old 12-24-2005, 10:49 AM
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BENJ-AMG
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Not normal. Get it checked.
Old 12-24-2005, 10:51 AM
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cvt
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strange..some people say it is and some people say it isn't...
Old 12-24-2005, 12:44 PM
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I get it if the engine is cold. After everything warms up it's fine.

I also get a slight "grind" from 1st to 2nd when the engine is cold. And sometimes there's a prety bad lag from 1st to 2nd.


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