2021-2025 Jeep/RAM/Dodge 3.6L Misfire & Valvetrain Noise TSB
A manufacturer communication (TSB 11014231) addresses engine misfires, rough idle, and valvetrain noise in 2021-2025 Jeep, RAM, and Dodge vehicles equipped with the 3.6L PSU Long Block engine. The issue is linked to worn intake camshafts and rocker arms, typically occurring between 10,000 and…
Also applies to
- Jeep Gladiator
- 2021–2025
- Jeep Grand Cherokee
- 2021–2024
- Jeep Grand Cherokee L
- 2021–2024
- Jeep Wrangler
- 2022–2025
- Dodge Durango
- 2021–2025
- Ram 1500
- 2021–2025
Owners of 2021-2025 Jeep, RAM, and Dodge vehicles equipped with the 3.6L PSU Long Block engine may experience issues such as engine misfires, a rough idle, or noticeable valvetrain noise. This manufacturer communication, identified as NHTSA ID 11014231, details a common cause for these problems and outlines a specific repair strategy. This issue often manifests as a high mileage failure, typically between 10,000 and 60,000 miles.
This technical service bulletin (TSB) is particularly relevant for owners searching for information related to a 2021 Jeep Wrangler manufacturer_communication regarding engine performance.
Symptoms
Owners may observe one or more of the following symptoms in their vehicle:
- Engine misfires, potentially indicated by a flashing check engine light or diagnostic trouble codes (DTCs).
- A rough or unstable engine idle.
- Audible valvetrain noise, which might sound like ticking or clattering from the engine.
These conditions are often related to wear on the intake camshaft high lift lobe(s) and the intake rocker arm(s) high lift slider.
Fault Codes / DTCs
The manufacturer communication mentions the presence of
Frequently Asked Questions
- What are the common symptoms of the 3.6L engine issue described in TSB 11014231?
- Owners may experience engine misfires, a rough idle, or valvetrain noise. These symptoms are often linked to worn intake camshaft high lift lobes and intake rocker arm high lift sliders.
- Which vehicles are affected by this 3.6L engine problem?
- This issue affects 2021-2025 Jeep Wrangler, RAM 1500, Dodge Durango, Jeep Gladiator, Jeep Grand Cherokee, and Jeep Grand Cherokee L models equipped with the 3.6L PSU Long Block engine.
- What is the typical mileage range when this engine problem occurs?
- The manufacturer communication indicates that this is typically a high mileage failure, occurring between 10,000 and 60,000 miles.
- How is the 3.6L engine misfire and valvetrain noise issue diagnosed and repaired?
- Diagnosis involves removing the valve cover(s) and visually confirming wear on the intake camshaft high lift lobe(s) and rocker arm(s) slider. The repair utilizes a special service kit containing a new intake camshaft, rocker arms, sealer, and gaskets, which is used instead of replacing the entire engine or long block.
What Jeep Wrangler owners report
Counted from the records in our database across 41 model years.
- 18,838
- Owner complaints
- 104
- Recalls
- 2,758
- Service bulletins
- 572
- Crashes reported
- 552
- Fires reported
- 435
- Injuries reported
The 2021 model year
963 complaints, the 5th most of 41 model years on file. Owners reported 21 crashes, 27 fires and 15 injuries for this year, which also has 17 recalls on file.
Engine, the system this article covers, accounts for 2,406 of 18,838 complaints (13%), including 225 for 2021.
Complaints by model year
| 2006 | 730 | |
|---|---|---|
| 2007 | 1,750 | |
| 2008 | 1,904 | |
| 2010 | 686 | |
| 2012 | 836 | |
| 2014 | 658 | |
| 2018 | 1,827 | |
| 2019 | 747 | |
| 2021 | 963 | |
| 2024 | 970 |
Most-reported systems
- Steering — 3,929
- Electrical System — 3,613
- Power Train — 2,470
- Engine — 2,406
- Fuel System — 2,015
Latest recalls for the 2021 model year
- 26V363000 — Steering (Jun 2026) — Park outside
- 25V741000 — Electrical System (Oct 2025) — Park outside
- 24V720000 — Electrical System (Sep 2024)
Recent owner reports about engine
At 47000 miles the oil cooler cracked, although the technician stated it did not cause the crankshaft: harmonic balancer pulley to be damaged, the mat issue did occur and documentation from other sources state one can cause the other.
Read owner complaints →When driving about 50 miles per hour on the highway, it felt like my engine suddenly gave out and my dash turned off. When it came back in, there were multiple indicator lights and a message that read "Pull over safely and shift to Park." I did just that, but…
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
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