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Transmission not shifting from first gear

Tiny
RONNIIE BOY
  • MEMBER
  • 2005 KIA SORENTO
  • 3.5L
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I changed fuel pump and mass airflow sensor then reset computer now it does not shift and revs up when changing shifting positions.
Wednesday, August 12th, 2020 AT 4:26 PM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

What were the codes that were set for you to replace those parts?

Was this issue present prior to the repair?

https://www.2carpros.com/articles/automatic-transmission-problems

Roy
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Thursday, August 13th, 2020 AT 4:08 AM
Tiny
RONNIIE BOY
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  • 4 POSTS
Didn't get codes checked I just went by things I read online.
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Thursday, August 13th, 2020 AT 5:25 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay,

Is the check engine light on?

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

Again, was this issue present before those repairs?

The transmission main sensor is the throttle position sensor. That sends a signal to the ECM where the fuel pedal is at and load and the ECM adjusts the time the transmission shifts.

This is why I am asking about codes. If the sensor was an issue, it should code. You can have the system read for free at a parts store.

I attached the location and the wiring diagram of the TPS for you. Do you have a voltmeter to test for voltage?

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Thursday, August 13th, 2020 AT 5:35 AM
Tiny
RONNIIE BOY
  • MEMBER
  • 4 POSTS
No, it didn't do that before. The throttle position sensor was my next step I wanted to ask to be more sure.
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Thursday, August 13th, 2020 AT 7:17 AM
Tiny
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I would verify voltages to the sensor before replacing the sensor.

Roy
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+1
Thursday, August 13th, 2020 AT 7:21 AM
Tiny
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  • MEMBER
  • 4 POSTS
I had taken sensor off to make sure it wasn't dirty could it be on wrong?
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Thursday, August 13th, 2020 AT 7:54 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No, because if it was, it would set a code for it.

Roy
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Thursday, August 13th, 2020 AT 7:56 AM

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