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A rapid deceleration and low rpm's on a 1999 Avalon might be caused by a misfire of the engine. This problem can also occur if the car is shifting too soon. The shift solenoid might also be the problem.

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โˆ™ 2014-10-07 01:58:10
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Q: On a 99 Avalon when decelerating rpm sometimes drop quickly below 1K then goes back up to around 1500 any ideas what may cause that since it acelerates fine and runs well otherwise?
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