That Vibration at 40 MPH: Is It Torque Converter Shudder?
Does your vehicle develop a shimmy or rumble around 40 mph, almost like you’re driving over a strip of grooves in the road? Torque converter shudder is one possible cause, especially if the vibration shows up under light throttle and disappears when you speed up or let off the gas. But speed alone doesn’t diagnose…
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