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350Z Hard Vibration at Idle, and throughout all gears.

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Old Mar 4, 2023 | 08:30 PM
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Billythekid123
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Default 350Z Hard Vibration at Idle, and throughout all gears.

Hey guys, was wondering if you have had the experience of having this happen to your automatic 350Z.

vehicle will vibrate harshly in any gear at standstill.

if gas is applied, it will go away temporarily.

can be felt through shifter and vehicle itself. Especially in center console area.

Drives smooth and shifts fine in all gears.

No codes or misfires.

checked oil for any metallic particles and found little to none. (She’s got 171K.)

only thing out of the ordinary she’s got is a poly mount at the bottom of transmission.
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Old Mar 5, 2023 | 02:38 PM
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Originally Posted by Billythekid123
Hey guys, was wondering if you have had the experience of having this happen to your automatic 350Z.

vehicle will vibrate harshly in any gear at standstill.

if gas is applied, it will go away temporarily.

can be felt through shifter and vehicle itself. Especially in center console area.

Drives smooth and shifts fine in all gears.

No codes or misfires.

checked oil for any metallic particles and found little to none. (She’s got 171K.)

only thing out of the ordinary she’s got is a poly mount at the bottom of transmission.
Sounds like a bad/loose trans or motor mount,
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Old Mar 5, 2023 | 03:55 PM
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Billythekid123
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Originally Posted by MicVelo
Sounds like a bad/loose trans or motor mount,


I just swapped to the poly in the trans mount.

only thing I’ve haven’t done is the motor mounts.

ive noticed that it happens randomly. I’ve pulled data for O2 sensor and found bank 2 sensor 2 dropping out randomly while driving. No CEL though.
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Old Mar 9, 2023 | 03:38 PM
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get under there and check the mount and bolts.
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Old Mar 11, 2023 | 08:49 AM
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It was the trans mount bolts backing off a bit. Thank you guys for the help and ideas!!
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