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Hi Guys, I am a new member. I have been stumped trying locate a vibrating noise (that lasts approx 2-3 seconds) that my Carrerra 4 makes under load @1500-2000 rpm that's driving me nuts! As soon as the rpms get above 2000 rpm it goes away. The best I can describe the noise as the noise you would hear if the was a loose shroud with something, like a driveshaft rubbing against it. I can't produce the noise while standing still, I have to be moving. At first, I thought it was the exhaust, I have since eliminated it as the culprit. The noise comes from under the car (can't tell if its front or b