Brand new 2020 350R weird noises

[racingandfishing]

Can anyone else hear the clunk noise at about 16 seconds when I shut the car off? It's the 2nd to the last noise you hear in the clip - opening the door is the last noise. It happens when I turn the car off. Do your cars make that noise?

Don't own a GT350 and can't comment on the rattling sound, but I have the FP Power Pack 2 on my lowly GT and it uses the 350 throttle body. It makes the same clunk sound when the car is turned off. Lot's of folks have complained about it, but apparently it has something to do with emissions.

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[Champale]

racingandfishing - thank you for that information! I had no idea. Hopefully that is all that is.

And nothing 'lowly' about a GT especially one with that power pack! Very cool. Thank you for the help.

 

[DrumReaper]

Just a question for my inquiring mind... does it make the same nose with the exhaust in loud mode?

 

[honeybadger]

#2 is most definitely the throttle body. Can 100% confirm that. My car has made it since day 1 and every other GT350 I've been in.

#1 sounds exhaust related to me as well. Can you get it up in the air and have someone rev it while you're under it?

 

[Champale]

DrumReaper - yes.

honeybadger - thank you very much for that regarding the TB! Makes me feel better. Will have some friends over this weekend to help me located the other noise.

 

[Champale]

UPDATE: passenger side O2 sensor was loose to the touch. Tightened it up and the resonance/ringing at 1500-2000rpm seems completely gone. Will take it for a drive later on. Whew.

Now I can start focusing on the dash rattles!

 

[JZTRK]

my 19 R clunks when I shut it off and the sound was a bit louder after the filter replacement I assume its the throttle blade snapping shut

 

[johnny1]

my 19 R clunks when I shut it off and the sound was a bit louder after the filter replacement I assume its the throttle blade snapping shut

Yup both mine did and my 2005 GTO I had new did also

 

[Champale]

Thank you all for confirming about the TB! I drove the car for over an hour yesterday and the ringing/vibration noise is completely gone since I tightened the O2 sensor. And the clunk at shutdown no longer concerns me. What a fantastic and fun car!

 

[yosv0610]

Thank you all for confirming about the TB! I drove the car for over an hour yesterday and the ringing/vibration noise is completely gone since I tightened the O2 sensor. And the clunk at shutdown no longer concerns me. What a fantastic and fun car!

Thank God, another thread resolved!

 

[Champale]

No kidding! I love easy fixes!

 

[Alain]

I have to listen for that snapping sound coming from the throttle body next time I turn mine off. Never noticed it......... but that’s probably because I park my car outdoors in my driveway instead of in a garage so the sound dissipates.

glad it was an easy fix !!!

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