Transmission issues - shuddering, bucking, etc.

[ctRanger11]

Hey there. I’ve been lurking this forum for a while but decided to make an account to see if anyone had some advice. I know there are a ton of threads about this issue and I’ve read a bunch of them. I commented on another post and someone here was kind enough to advise that I should have the dealer run the test from the latest TSB 25-2134 which I realize now they did back in May… that came back with nothing. Dealer tried to blame it on my “aggressive oversized tires” which I think is bs. I was having shifting issues from the moment I bought this truck (used, private party) with stock tires. I don’t really know where to go from here since the tests are coming back with nada.

Oh also, other issues that have been fixed since I’ve owned: 4x4 switch (faulty light/wire), AC blend door, windshield delaminating/replaced, now I’m having problem with the passenger side window squeaking and taking forever to roll up lol.

Feels like transmission issues are just a given at this point . It’s a 2019 Lariat and I think an earlier build. Odo 47,000
I do have warranty which is why I’d like to get it fixed before it’s up.

Anyway I feel like I’m going crazy. I’m pretty sure I can tell the difference between riding on AT tires and actual shifting issues. Should I just keep driving and see if it gets any worse? Or have the dealership re-do the test stated in the TSB? If anyone has similar-ish situation and can weigh in here I’d really appreciate it.

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[NerkyMohawk]

Look up changing out your dpfe sensor. This will probably solve your "tranmission" issue.

 

[ctRanger11]

Look up changing out your dpfe sensor. This will probably solve your "tranmission" issue.

Cool, thank you for the reply. I briefly read about the dpfe sensors. Will look back into this. Appreciate it.

 

[Chris M]

Them's a lot of issues, friend. Since youre still under warranty for at least some of it, I would have a different dealer address them if you're able to.
Especially the transmission. Might be worth telling them you'll pay for doing the TSB if it still shows no faults...just for your own peace of mind.

Best of luck!

 

[Stein2424]

What size tires do you have on it? Thinking about bringing mine in before the warranty is up for them to check but went up one size.

 

[ctechbob]

Simple.

DPFE - Change it
Fluid - Change it
Lubegard - Add it

If the problem is still there it is a hard part problem and should show up during the TSB test.

If the problem is better but not 100% do another fluid change with Lubegard in a few hundred miles.

 

[ctRanger11]

What size tires do you have on it? Thinking about bringing mine in before the warranty is up for them to check but went up one size.

I sized up to 275/65r18. I did have to add a 2 inch level for those to fit.

 

[Stein2424]

What a joke. 32s aren’t even oversized! That’s what the ranger tremor has stock.

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