Gears D3 and D4 not functioning

180 MILES • 4.3L • 4 CYL • 2WD • AUTOMATIC
Avatar
CLIMAX
  • MEMBER
  • 1 POST
This problem started by the car jerking when moving from gear D1 to D2, after which the car accelerates normally. I then decided to replace the automatic transmission fluid. The jerking then stopped.

One month later, I discovered that the high speed gears D3 and D4 were no longer engaging. The lever shifts to D3 and D4 and the lamps light up accordingly but the gears do not engage. The reverse gear (R), D1 and D2 engage and work well.

What can be the cause?

Thanks,

Climax
Mar 12, 2019 at 6:45 PM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,512 POSTS
Hello,

It sounds like the input shaft speed sensor has gone out. but to be sure here is a guide to help us run the codes:

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

If the codes of the sensor comes up here is a video to help you change it out.

https://youtu.be/f3bETtCIdxM

Please run down these guides and report back.
Mar 14, 2019 at 6:11 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle