FishermanJer
New Member
- Joined
- Jan 20, 2022
- Messages
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I didn't replace air filter yet. it didn't need it. I replaced the Fuel Filters and oil change.
How did you fix that?Reminds me of my 47RE days when the governor pressure solenoid would go out. It wouldn’t kick down to a lower gear like it should when you get hard into the accelerator pedal.
So the fix was a replacement solenoid kit. Dnj components made a upgrade kit with a more reliable solenoid. I’m not sure this is your problem as these transmissions are decades apart.How did you fix that?
AA bought them way before this became an issue. Installed it a few weeks ago. No issues so far but did keep the original just in case.Which mopar engine air filter did you install:
68517554AA
Or
53034051AB
Or
Aftermarket
?
That is the incorrect filter for a 2019+ Cummins truck. And they have shown multiple times to chase a lack of power or throttle response, as well as P0299 turbocharger underboost codes, and even more frequent regeneration cycles.AA bought them way before this became an issue. Installed it a few weeks ago. No issues so far but did keep the original just in case.
Which air filter brand / number was installed when you had the issue?I didn't replace air filter yet. it didn't need it. I replaced the Fuel Filters and oil change.
That is the incorrect filter for a 2019+ Cummins truck. And they have shown multiple times to chase a lack of power or throttle response, as well as P0299 turbocharger underboost codes, and even more frequent regeneration cycles.
The air filter is the first thing to rectify moving forward. I would highly recommend changing it to a mopar 53034051AB or a Fleetguard AF27684
Then see if that helps the issue you’re experiencing.View attachment 62732View attachment 62733
Which air filter brand / number was installed when you had the issue?
That might have been my fault. I saw the AA filter reference and got lost. Either way that’s a known filter for underboost codes / slow throttle response. I lived it. My 2022 Ho was gutless off the line with that filter installed.We got off on a tangent somewhere with @CdnHO . The OP says he hasn’t replaced the air filter yet, I take that as the OE one is still installed.
The OP doesn’t appear to be having an air filter issue. The truck will tell you when the air filter is restricted, long before it limits speed to 30 mph uphill.
It’s acting more like a fuel delivery issue, but could be programming/computer, transmission, turbo related… or something else.
The lack of a downshift and lack of a CEL makes me think it’s a computer issue.
That might have been my fault. I saw the AA filter reference and got lost. Either way that’s a known filter for underboost codes / slow throttle response. I lived it. My 2022 Ho was gutless off the line with that filter installed.
The OP’s truck is a 2021, you’d think it would have at least one filter change on it by now, unless the truck sits a lot.
Agreed. And from the description it sounds like turbo lag / underboost….Yeah it’s easy to do with all the air filter issues.
I would have also thought the OP would have changed the air filter by now, if not by miles at least by months.. maybe it was a late 21 purchase.
My bad.We got off on a tangent somewhere with @CdnHO . The OP says he hasn’t replaced the air filter yet, I take that as the OE one is still installed.
The OP doesn’t appear to be having an air filter issue. The truck will tell you when the air filter is restricted, long before it limits speed to 30 mph uphill.
It’s acting more like a fuel delivery issue, but could be programming/computer, transmission, turbo related… or something else.
The lack of a downshift and lack of a CEL makes me think it’s a computer issue.