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Sudden RPM drop when foot off gas pedal (Automatic)

 
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Old 10-20-2013, 03:38 AM
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Sudden RPM drop when foot off gas pedal (Automatic)

Is this normal for Auto Ludes? It happens all the time when I'm in stop and go traffic but never when I'm on the highway. The car isn't downshifting when the RPM drops, it will drop and then quickly stabilize.

ex.
cruising at 40mph, I'm in 4th gear (revving approx. 2200) , as soon as I let off the accelerator the RPM will drop to 1200-1300 and then quickly stabilize, this happens in either D4 or SS mode.

But if I'm cruising at highway speeds (55mph and up) the rpm gradually decreases if I let off the accelerator.

I'm thinking in both cases, it's the Torque Convertor doing it's job??
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Old 10-30-2013, 10:19 PM
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Re: Sudden RPM drop when foot off gas pedal (Automatic)

If what you are experiencing is the same as what mine does, I think its just a symptom of the torque converter going from load to no load to load.
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Old 10-30-2013, 10:24 PM
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Re: Sudden RPM drop when foot off gas pedal (Automatic)

Quote:
Originally Posted by Noober View Post
If what you are experiencing is the same as what mine does, I think its just a symptom of the torque converter going from load to no load to load.
Hey Noober
thanks for your input.
I've owned the car since new and never realized this up until a few weeks ago.
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Old 10-30-2013, 11:01 PM
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Re: Sudden RPM drop when foot off gas pedal (Automatic)

I think I know this feeling, yes it does happen to me in mine as well. Drops a bit below then back to where it should be. Happens every so often to my auto, if it's what I think your referring to
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