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Rpm drops

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Old Dec 29, 2020 | 04:15 PM
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Default Rpm drops
I have a Grand Prix 2003 and when I let off the throttle the rpms drop think it might be the torque converter not locking up but wasn’t sure was looking for advice on what to do thanks!
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Old Dec 29, 2020 | 09:16 PM
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. . . at what speed?

Uphill or down or flat?

How many miles on it?

How many miles have you owned it?
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Old Dec 29, 2020 | 09:21 PM
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It doesn’t matter what speed I have 200,xxx on it doesn’t matter uphill downhill or flat at 55 mph it runs 2500 rpm and at 70 mph 3000 rpm but as soon as I let off the accelerator the rpm drops to idle
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Old Dec 29, 2020 | 09:40 PM
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How full is the fluid when it is warmed up and idling in Park?
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Old Dec 29, 2020 | 09:45 PM
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Fluid is full but it doesn’t matter if it’* cold or warm it does it
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Old Dec 29, 2020 | 11:15 PM
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Yes it does. This is why the dipstick denotes "full hot" in some form.

Are you checking the fluid when it is warmed up and idling in Park?

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Old Dec 29, 2020 | 11:16 PM
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No I’m saying cold or hot fluid it does this and yes I am
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Old Dec 29, 2020 | 11:25 PM
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How many miles have you owned it?

How many miles since the last transmission service?
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Old Dec 29, 2020 | 11:28 PM
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I’ve owned it since 145,xxx and was the second owner I haven’t serviced it and not sure if they had it serviced but was thinking about putting fresh fluid in it
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Old Jan 1, 2021 | 02:55 PM
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Originally Posted by Grandprix03
I have 200,xxx on it
Originally Posted by Grandprix03
I’ve owned it since 145,xxx
Okay so you've put at least 55,000 miles on it, and unknown additional miles prior.

​​​​​​​Definitely do a service and change the filter.
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