Engine rattle upon shutoff.

gh0st3794 · 02-22-2010, 01:56 AM

If I have my driver door open as the engine is running (I have the door open to better hear the engine bay), when I push the start/stop button to shut the car off, I hear a quick rattle/knock-like noise as the motor winds down to a rest. The noise seems to be coming from the motor or somewhere in the engine bay. Anyone else notice this? I know the VQ37 isn't the quietest of motors, but just wanted to know if this was normal.

tbonesteak · 02-22-2010, 08:35 AM

yes that noise is coming from the clutch/flywheel assembly of the transmission and it is normal.

JJ-NISMO · 02-26-2010, 10:15 PM

I have the same issue and just noticed it tonight. I have 200 miles on the car so far and have not noticed it before. I was actually nervous when I heard it for the first time while parking in the garage tonight. The engine makes a knocking noise when I shut it off.

I also noticed a faint vibrating and rattling noise with all feet of the pedals; however, it goes away when i depress the clutch while I am in neutral. Is this normal also? I am worried the bearing or flywheel may have issues.

1slow370 · 02-27-2010, 04:51 AM

thats probably your input shaft making noise JJ. when the clutch is depressed you cut power to it so it stops spinning but in neutral with the clutch out it is freewheeling with the engine. as for the knocking on shutoff

could be a lot of things might be the flywheel but mine doesn't do that so i don't know for sure.

ZKindaGuy · 02-27-2010, 07:07 AM

Quote:

Originally Posted by JJ-NISMO

I have the same issue and just noticed it tonight. I have 200 miles on the car so far and have not noticed it before. I was actually nervous when I heard it for the first time while parking in the garage tonight. The engine makes a knocking noise when I shut it off.

I also noticed a faint vibrating and rattling noise with all feet of the pedals; however, it goes away when i depress the clutch while I am in neutral. Is this normal also? I am worried the bearing or flywheel may have issues.

You folks have entirely too much time on your hands. Do you ever use any time of yours to just enjoy your car?

370Zsteve · 02-27-2010, 07:36 AM

You are using at least 91 Octane fuel, right?

JJ-NISMO · 02-27-2010, 12:58 PM

I love the car ZKinda!! I just ran across this post and wanted to let the OP know that other people have the same issue. I am definitely not concerned at all, the tranny on this car is noisy and just takes a bit of finnessing. As for the noise on shutdown, I think it is just everything winding down.

ZKindaGuy · 02-27-2010, 07:01 PM

Quote:

Originally Posted by JJ-NISMO

I love the car ZKinda!! I just ran across this post and wanted to let the OP know that other people have the same issue. I am definitely not concerned at all, the tranny on this car is noisy and just takes a bit of finnessing. As for the noise on shutdown, I think it is just everything winding down.

OK...that works for me! Cheers!

cruzmisl · 02-28-2010, 02:20 AM

Push in the clutch when shutting it off. It should be near-silent.

Rattle happens when I just shut it off without pushing in the clutch.

02-22-2010, 01:56 AM	#1 (permalink)
gh0st3794 Base Member Join Date: Jan 2010 Location: FL Posts: 121 Drives: 2012 NISMO 370Z Rep Power: 15	Engine rattle upon shutoff. If I have my driver door open as the engine is running (I have the door open to better hear the engine bay), when I push the start/stop button to shut the car off, I hear a quick rattle/knock-like noise as the motor winds down to a rest. The noise seems to be coming from the motor or somewhere in the engine bay. Anyone else notice this? I know the VQ37 isn't the quietest of motors, but just wanted to know if this was normal. __________________ -2012 Solid Red NISMO 370Z -2010 370Z 6MT sport pkg 301 whp 251.4 wtq (Dynojet) SOLD -K8 Suzuki GSX-R 600

02-27-2010, 04:51 AM	#4 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	thats probably your input shaft making noise JJ. when the clutch is depressed you cut power to it so it stops spinning but in neutral with the clutch out it is freewheeling with the engine. as for the knocking on shutoff could be a lot of things might be the flywheel but mine doesn't do that so i don't know for sure. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

02-27-2010, 07:36 AM	#6 (permalink)
370Zsteve A True Z Fanatic Join Date: Sep 2009 Location: Gold Coast CT Posts: 10,599 Drives: 2019 Corvette G.S. Rep Power: 43	You are using at least 91 Octane fuel, right? __________________ SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

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02-22-2010, 08:35 AM	#2 (permalink)
tbonesteak Track Member Join Date: Mar 2009 Location: Socal Posts: 914 Drives: MY09 MB 6MT Rep Power: 375	yes that noise is coming from the clutch/flywheel assembly of the transmission and it is normal.

02-26-2010, 10:15 PM	#3 (permalink)
JJ-NISMO Enthusiast Member Join Date: Feb 2010 Location: SoCal Posts: 276 Drives: 09 NISMO 370Z PG Rep Power: 242	I have the same issue and just noticed it tonight. I have 200 miles on the car so far and have not noticed it before. I was actually nervous when I heard it for the first time while parking in the garage tonight. The engine makes a knocking noise when I shut it off. I also noticed a faint vibrating and rattling noise with all feet of the pedals; however, it goes away when i depress the clutch while I am in neutral. Is this normal also? I am worried the bearing or flywheel may have issues.

02-27-2010, 12:58 PM	#7 (permalink)
JJ-NISMO Enthusiast Member Join Date: Feb 2010 Location: SoCal Posts: 276 Drives: 09 NISMO 370Z PG Rep Power: 242	I love the car ZKinda!! I just ran across this post and wanted to let the OP know that other people have the same issue. I am definitely not concerned at all, the tranny on this car is noisy and just takes a bit of finnessing. As for the noise on shutdown, I think it is just everything winding down.

02-28-2010, 02:20 AM	#9 (permalink)
cruzmisl Base Member Join Date: Feb 2010 Location: Hillsboro, OR Posts: 122 Drives: 08 G37S 6MT Rep Power: 15	Push in the clutch when shutting it off. It should be near-silent. Rattle happens when I just shut it off without pushing in the clutch.