Jerks when shifting from second to third over 2,000 RPMs but under 2,000 RPMs it shifts good.
Nov 16, 2021 at 10:19 PM
Transmission jerks when shifting from second gear to third gear over 2,000 RPMs
2005 HYUNDAI SANTA FE
KELLI LYNN PRESTRIDGE
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Hi,
First, is the transmission fluid clean and full? If you haven't checked, follow the directions below and let me know the results. (See pics 1-4)
Transmissions depend on what is called line pressure and shift solenoids to function. What you described at first sounded like a pressure issue, but I need to know if this is the only shift it happens during.
As far as testing, what really should be done is this. First, scan the can-bus system. CAN stands for controller area network. Basically, all computers/modules are tied together via a few wires. With this type of scan, trouble codes can be retrieved regardless of the module storing them. Here is a quick video showing how it's done:
https://youtu.be/InIlnsjOVFA
The other way to test for a harsh upshift is by driving the vehicle with a live data scanner and watching shift commands from the PCM/TCM (power/transmission control module).
I realize these are things that may be difficult for you to do, so let me know what I can do to help. Also, here is a link you may find of interest:
https://www.2carpros.com/articles/automatic-transmission-problems
Let me know what you find or if you have other questions.
Take care,
Joe
See pics below.
First, is the transmission fluid clean and full? If you haven't checked, follow the directions below and let me know the results. (See pics 1-4)
Transmissions depend on what is called line pressure and shift solenoids to function. What you described at first sounded like a pressure issue, but I need to know if this is the only shift it happens during.
As far as testing, what really should be done is this. First, scan the can-bus system. CAN stands for controller area network. Basically, all computers/modules are tied together via a few wires. With this type of scan, trouble codes can be retrieved regardless of the module storing them. Here is a quick video showing how it's done:
https://youtu.be/InIlnsjOVFA
The other way to test for a harsh upshift is by driving the vehicle with a live data scanner and watching shift commands from the PCM/TCM (power/transmission control module).
I realize these are things that may be difficult for you to do, so let me know what I can do to help. Also, here is a link you may find of interest:
https://www.2carpros.com/articles/automatic-transmission-problems
Let me know what you find or if you have other questions.
Take care,
Joe
See pics below.
Images (Click to enlarge)
Nov 17, 2021 at 8:20 PM
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Did you get my eply?
Nov 19, 2021 at 10:12 PM
Hi, Kelli.
I didn't receive anything. Did you attach it to this thread?
Joe
I didn't receive anything. Did you attach it to this thread?
Joe
Nov 19, 2021 at 10:22 PM