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Clunk sound when tapping gas in 5th gear??

 
Old 07-11-2019, 09:37 AM
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D3troit Muscle
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Default Clunk sound when tapping gas in high gear (M7)??

Hi all, i have a brand new '19 M7 i purchased less than two months ago, I noticed when i am driving around 45mph in 5th gear and i tap the gas real quick i sometimes here a "clunk" sound coming from under the car toward the rear, not sure if this is normal driveline clunk/play or not. If i am going faster or in any other lower gear i dont hear it. And obviously at 45mph in 5th the vehicle does not "buck" much at all when i hit the gas. Also new to manual so not sure if this normal? Thanks!

Last edited by D3troit Muscle; 07-11-2019 at 01:02 PM.
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Old 07-11-2019, 07:21 PM
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speedlink
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First of all, 5th is too high a gear for 45mph. Second, take it to the dealer. Drive line may have a problem.
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Old 07-11-2019, 07:54 PM
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Frosty
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I think it is normal
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Old 07-11-2019, 08:29 PM
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TNSQUIRE
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Fifth is definitely too high for only 45. At Spring Mountain we were doing over 100 in 4th. I never hit 5th until at least 65.
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Old 07-11-2019, 08:34 PM
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madrob2020
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5th gear is fine for 45. Even the Stingray has plenty of torque at that speed/gearing. Long as RPM is above 1000 the engine isn’t “lugging “. As for the “clunk” noise I suspect it’s simply a result of “tapping fast “ the gas & causing the tranny to “jerk “. Not technical I know ☹️ I’ve had a ‘14 Z51,‘16 Z & now ‘19 Z all with M7 so have a bit of experience.

Last edited by madrob2020; 07-11-2019 at 08:39 PM.
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