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Transmission fault the gear will not select?

Tiny
TAOLAW8
  • MEMBER
  • 2008 HYUNDAI SANTA FE
  • 2.2L
  • V6
  • TURBO
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
When I am driving my gear will be select and once I attain 80mph speed, the gear will not select and stop on the select one may be 3, if I mash brake also it will not go back to one, unless I shift my gear lever to P and select it back to Drive. And if I use it manually it will do the same thing and I have replace the gear box still the same.
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Tuesday, November 19th, 2024 AT 9:45 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
This can be caused by many things, can I ask if you have a check engine light on? We should run the codes to see if any are stored. This guide can help.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Does the engine seems to have good power? Because a clogged catalytic converter will cause this issue, and I have seen a weak input shaft speed sensor cause this problem as well. Here is the location of the sensor in case a code is stored for it. Check out the images (below). Please let us know what happens.
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Thursday, November 21st, 2024 AT 11:05 AM

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