Top 10 Signs of Transmission Trouble


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Whining, Clunking and Humming
Ignore the noises your car makes for long enough and you could eventually wind up like this unfortunate driver.
Ignore the noises your car makes for long enough and you could eventually wind up like this unfortunate driver.
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It's difficult to nail down exactly how your car may sound if there's transmission trouble, but one thing's pretty certain, you'll probably get a that-doesn't-sound-right feeling when you hear it. Every car is built differently, so the sounds they produce can vary greatly, but if you have an automatic transmission, there's a good chance you may hear a whining, humming or even a slight buzzing sound [source: Lee Myles Transmissions and Auto Care].

With manual transmissions, the sounds will usually come across as a bit more abrupt and mechanical sounding. If you shift gears and hear a clunking sound, then you definitely need to have it checked out by a professional [source: AAMCO]. But a clunking sound from underneath your vehicle may not always point to a transmission problem. Your constant velocity joints (CV joints), or even your differential may be the culprit [source: AAMCO].

The sounds you hear may happen from time to time at first, but if you neglect the noises, they'll occur more frequently as time goes on.