Transmission not shifting properly and engine loses power

2001 HYUNDAI SANTA FE
200,000 MILES • 2.7L • V6 • 2WD • AUTOMATIC
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TONYSANDERS50
  • MEMBER
  • 1 POST
The car will down shift out of fourth to third gear and will lose power. it will not shift back up and will not go into first gear until it is shut off for awhile.
Dec 11, 2020 at 1:46 PM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

This sounds like it could be related to a few different things. First, I recommend having the computer scanned to see if there are diagnostic trouble codes related to the transmission. Here is a quick video showing how that is done:

https://youtu.be/b2IJGfImVvw

I realize most people don't own a scanner, but most parts stores will do it free of charge. If the check engine light stays on when the engine is running, this really should be done.

Next, check the condition and the level of the transmission fluid. Here are the directions for checking:

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See pics 1 and 2 for testing locations.

1) Start the engine and let it idle for 1-2 minutes.

2) Move the select lever through all positions, and then move it to the N position.

3) Drive the vehicle until the fluid temperature rises to the normal temperature (70 - 80°C), and then check the fluid level again. The fluid level must be at the HOT Mark.

_________________________

Let me know what you find or if you have other questions.
Take care,
Joe
Dec 12, 2020 at 2:07 PM
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