Whistle noise on cold startup 2018 Sport Tech

ZoomZ · 12-25-2019, 12:12 PM

I also suspect the Transmission. Dealer replaced CSC and pilot bushing. Noise went away initially but Came back a few days later. Not as pronounced, but same type of sound. Hasn't really done it since. Car is now in Hibernation, so we'll see in few more months.

I really couldn't grasp why a CSC would squeal on cold starts. It always has fluid, the actual "Slave" portion Is just an actuator. Leaves only the Bearing portion, which is not lubricated (sealed), but just spins. Correct me if I'm wrong.

While in Idle, in Neutral, clutch NOT depressed, transmission main shaft should be spinning. Noise is there.

Press clutch to floor (idle, neutral) noise goes away. Don't even need to warm up. How the CSC behaves in this manner, is what I don't understand.

Leads me to think Transmission is not getting lubrication where required after sitting for a few days. (oil has flowed away)

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12-25-2019, 12:12 PM	#30 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 807 Drives: 17' 370Z Nismo Rep Power: 40657	I also suspect the Transmission. Dealer replaced CSC and pilot bushing. Noise went away initially but Came back a few days later. Not as pronounced, but same type of sound. Hasn't really done it since. Car is now in Hibernation, so we'll see in few more months. I really couldn't grasp why a CSC would squeal on cold starts. It always has fluid, the actual "Slave" portion Is just an actuator. Leaves only the Bearing portion, which is not lubricated (sealed), but just spins. Correct me if I'm wrong. While in Idle, in Neutral, clutch NOT depressed, transmission main shaft should be spinning. Noise is there. Press clutch to floor (idle, neutral) noise goes away. Don't even need to warm up. How the CSC behaves in this manner, is what I don't understand. Leads me to think Transmission is not getting lubrication where required after sitting for a few days. (oil has flowed away)