Dave6188 Posted May 1, 2016 Share Posted May 1, 2016 When I start my car and release the clutch sometimes but not everytime something thuds/knocks, sounds like it's coming from underneath the car. Also noticed it when I nailed the car and shifted from 2nd to 3rd, same thud/knock ! Any ideas anyone ??? HR if it makes a difference. Quote Link to comment Share on other sites More sharing options...
Zeezeebaba Posted May 1, 2016 Share Posted May 1, 2016 I'm not sure about the Z but I had a bmw that did something similar. That was a gearbox mount. Quote Link to comment Share on other sites More sharing options...
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