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2008 Hyundai Sonata when it gets up to 40 mph in rumbles then stops?
Wiki User
∙ 14y ago
That is the result of the torque convertor locking. Notice when it starts to rumble the RPMs drop like it is going into another gear, yet you are already in the highest gear. The fix is to take it back to the dealer and have them flash the computer with the new trans curve. This changes the lock speed to 46 MPH and solves the issue. TSB is here: www.amdmaddness.com/sonata/tsb/4cyl_nf_transmission_shudder.pdf and should not cost you a dime. Regards!
Wiki User
∙ 14y ago
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The 2008 Hyundai Sonata has 16 valves.
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The 2008 Hyundai Sonata is a gas-powered vehicle.
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The 2008 Hyundai Sonata has an inline 4 engine.
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The 2008 Hyundai Sonata has a drag coefficient of .32 Cd.
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