After driving for a few minutes, the transmission will not shift into fourth gear?

193,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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LOVED2DETH25
  • MEMBER
  • 1 POST
When I stop and go is when I experience it. If I drive the interstate it starts surging at a cruising speed.
Sep 30, 2022 at 6:57 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

It could be the result of a few things.

Here is what I suggest. We need to scan the can-bus system. CAN stands for controller area network. Basically, the different computers/modules are tied together via a few wires. This type of scan will retrieve codes regardless of the module storing them.

Here is a link showing how this is done:

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

Let me know if you are able to have that done. If you can, let me know what codes are retrieved. If you can't have it done, let me know that as well.

Take care,

Joe
Sep 30, 2022 at 3:20 PM
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