The transmission does not shift into passing gear?

2004 DODGE DAKOTA
177,000 MILES • 3.7L • V6 • 2WD • AUTOMATIC
Avatar
ANNIE DONAHUE
  • MEMBER
  • 1 POST
Truck doesn't kick down into passing gear.
Nov 10, 2024 at 7:20 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
A somewhat common issue is related to the issue of often a pressure issue. If the pressure readings do not increase significantly as the engine speed is raised above 2000 rpm, the pressure control solenoid is usually at fault. The pressure control solenoid is usually accompanied by DTCs P0867(C8) and P0868(C9). If the readings vary with engine speed (above 2000 rpm), the fault is often a sticking main regulator valve. This valve is located in the transmission pump assembly.

So as mentioned, there could be diagnostic trouble codes that could point us in the right direction. If you haven't had the computer scanned, that is where I would recommend starting.

Here is a link showing how to scan the entire can-bus:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

If you have a live data scan tool, you could check to see if the line pressure is increasing via the tool.

Let me know your thoughts and questions. Also, if you have retrieved codes already, let me know what they are.

Take care,

Joe
Nov 11, 2024 at 5:44 PM
Advertisement