Transmission Input speed sensor location and replacement?

Tiny
MIKELEE74
  • MEMBER
Thanks. True, but if it was a real transmission problem it would be happening all the time and not once and awhile right? See when I turned off the car today and left it for an hour when I went back out and started it the check engine light remained on but the D for Drive light stopped flashing and no problems shifting. The car drove fine. This has happened before. My mechanic friend would reset the computer and the check engine would go out. This is really strange.
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
It is not strange at all. The drive light flashes because the TCM has codes stored that need to be retrieved using an enhanced scan tool. It goes out because the problem is not constantly occurring. All you are doing when you reset the computer is to erase all that valuable diagnostic information that the engineers spent hours engineered into the computer to help find the problem. Unless you have a dealer level scan tool, someone else is going to have to do this.
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
MIKELEE74
  • MEMBER
Okay, but if it was truly a mechanical problem with the transmission it would be happening consistently and when the car would shut off and the flashing stops and the car rides fine wouldn't be happening if it was a genuine mechanical problem? Do you think it could be a computer issue?
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
KEN L
  • ADMIN
It sounds more like a sensor issue. There are two shaft speed sensors on the transmission did the mechanic replace both?

Cheers, Ken
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
MIKELEE74
  • MEMBER
Thanks for the reply. Yes he did. It was expensive. This issue does not happen all of the time. I would think that if this was a mechanical issue it would be happening all of the time. Drove it today. The check engine light was on but it rode fine. I drove this care a whole year with the check engine light on and it was fine. When the car got inspected my mechanic friend resets and the CE light goes away. The last time I got it inspected was in April 2017.
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
KEN L
  • ADMIN
Most of the time mechanical issues are constant this sounds like one of the sensors has gone bad did the mechanic use OEM parts?

Here is a video on how to replace the speed sensors.

https://youtu.be/f3bETtCIdxM

Please let us know what happens.

Cheers, Ken
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
MIKELEE74
  • MEMBER
Ken,
Just spoke to mechanic. He said he did use OEM.
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
KEN L
  • ADMIN
Lets run the codes to see what come up. Here is a guide to help show you how to get the codes so we can go from there.

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

Please let us know what you find.

Cheers, Ken
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)
Tiny
MIKELEE74
  • MEMBER
Okay thanks.
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Wednesday, October 28th, 2020 AT 1:55 PM (Merged)

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