Transmission delay in shifting problem

Hi,

The harder you accelerate, the longer it will take for the shifts. The RPM's will increase higher before shifting. Is that what is happening? By any chance, is the check engine light staying on when the engine is running?

Joe

I didn't notice the rpm. There is no check engine light.

Hi,

Check to see if the RPM's are simply increasing because you are accelerating faster. I have a feeling that is what is happening. I am basing that on the idea that you mentioned it shifts normally if you are easy on the throttle.

Let me know.

Joe

Okay. Let me check and get back to you.
Thank you Joe.

Hi,

You are very welcome. Let me know what you find or if you have other questions.

Take care and I hope you are well.

Joe

Unfortunately this truck doesn't have a rpm gauge!

Hi,

No problem. Can you hear the engine increasing in speed as the vehicle does the same?

Joe

Good morning Joe. I did, but no it doesn't increase in speed!

Okay, if the engine RPM's are increasing but the vehicle isn't, it almost sounds like the transmission is slipping.

I need you to check the transmission fluid level to confirm it is clean and full. Here are the directions for doing it.

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Engine RPM must be at idle before starting the level check. Keep the transmission fully warmed (valve body ATF temperature: 158-176°F/70-80°C) during the procedure.

1. Park the vehicle on level ground, set the parking brake, block the wheels and start the engine.

2. With the engine idling and regular brakes applied, shift the gear slowly in every range from P to 1 range, and return to the P range.


see pic 1


3. With the engine idling, remove the level gauge and clean off any fluid or foreign material. Insert the level gauge, remove it again, and confirm that the oil level is within the 'HOT' range.

________________________

Let me know.

Joe

Okay Joe. Will do.

Sounds good. Let me know what you find.

Take care,
Joe

I checked. It's not in the 'H" range. What oil shall I use?

Hi,

What I am seeing for a 2001 is Dexron III. See attached picture.
Is the fluid clean? (red in color)
Joe

Hi. Yes the fluid is clean. (red in color.)
Thank you for your time Joe.

You are very welcome. If you have other questions or need anything, let me know.

Take care, stay healthy, and have a Happy Easter!

Joe

Hi. I added more ATF and the level is correct, but the problem still exists!

Hi,

Is it possible for you to drive the vehicle and record what it is doing so I can hear and see what you are experiencing?

Joe

Hi. Sure I can Joe.