Jeep Patriot misfire problems

Filed Jul 14, 2026 · Suspension, Transmission · IN

Certified dealership service department omitted structural safety complaints from official service invoices, left vital diagnostic findings and performance metrics off paperwork tracking paths, cleared a compromised front suspension layout as safe, and actively instructed a vehicle operator to execute a driving pattern that induces sudden power loss on public roadway infrastructure. TIMELINE SUMMARY OF DEALERSHIP SERVICE (see uploaded PDF for details): March 26, 2026: Diagnostic service and fees for front right tire and new spark plugs. Left bay with immediate new serious issue. March 30, 2026: Follow up on new issue. No alerts. Given clearance. Zero charge invoice. May 19, 2026: Follow up AGAIN on same issue. Scheduled eventually after multiple tries to reach Supervisor. RPM alert reading. Technician gave negligent advice causing further damage to my vehicle and putting me in danger. The technician noted an unprecedented 3,000 to 4,000 RPM calculation anomaly on his computer screen yet dismissed the hazard by blaming my driving habits as "too gentle." He instructed me to find a ramp or an open stretch of road to "rev up" the acceleration and seek out cleaner fuel brands. Incomplete records. Zero charge invoice. I followed the advice and caused further damage and put myself and others at risk on the roads. June 22, 2026: Second opinion. Failing transmission and front arm controls damage. Reputable business reported: "Found front control arm bushings damaged and inop. Transmission fluid sample is dark and has a clutch odor. Test drove monitoring misfire and transmission: misfire 0. Trans slip during test drive even shows abnormal transmission slip. Recommend replacement of transmission and torque converter assembly." June 26, 2026: called management for full accountability. I request full repairs immediately. This situation created serious interruptions to my schedule and a threat to my personal safety. July 14, 2026: Certified letters to dealership.

Filed Sep 12, 2025 · Engine · 25,105 miles · KY

The contact owns a 2015 Jeep Patriot. The contact stated that the check engine warning light had illuminated. The vehicle was taken to the dealer, who diagnosed that the fuel and the oxygen were not mixing correctly. The dealer confirmed that the throttle body box sensor failed and needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was returned to the dealer, who confirmed that the same failure had reoccurred. The throttle body box sensor was replaced again. The contact stated that after the repair, while starting the vehicle, there was a misfire coming from the engine. The contact made several attempts, but the failure persisted. After turning off the vehicle, waiting for a while, and then restarting the vehicle, the contact was able to drive to the residence. The contact stated that the check engine warning light remained illuminated. The vehicle was returned to the dealer a third time, and the dealer determined that the same part needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 25,105.

Filed Jun 24, 2025 · Engine · TX

I received an alert on my insurance portal, that my vehicle type ( Jeep Patriot 2016) had a recall, S89 for the camshaft and crankshaft sensors . I noticed that my vehicle has the same issues that is caused by this recall. My vehicle has been stalling and the check engine light when off recently. I had it looked at and the obd reader displayed that there were misfires displaying in the cylinder and issues connected to the camshaft and crank shaft sensor at. I called the recall line but they stated it wasn’t associated with my specific car but I feel like my vehicle should be included in this recall due to the exact issue I am experiencing that is listed in the recall. My vin is [XXX] . I feel I should be included and the issues are causing potential safety risks when driving. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 13, 2024 · Electrical, Engine · TX

CAMSHAFT and CRANKSHAFT position sensors keep failing. I have gotten these replaced at a local auto shop 4 times in the 3 years I've had the vehicle. Each time they're replaced the PCM is flashed but issue comes back a couple days to a week later either when coming to a stop at an intersection or when driving up to 50 miles per hour, the acceleration doesn't work properly and RPMS shoot down to zero and back up. Car has also shut off when coming to a stop under 5 MPH and sometimes starts up again. Engine light and TCS light both come on when either sensor fails, car runs rough or doesn't start resulting in a tow to a shop. This is a huge safety risk and can cause a crash at any time. VIN does not have recall, but has all the issues described in the recall.

Filed Sep 26, 2023 · Acceleration, Electrical · MI

Over the past year, the car has had 4 crank position sensors, new pig tails/connectors on the wire harness, a new throttle body, and a new MCM. The Jeep will randomly shut off without warning either at stoplights/traffic or on the highway at speed. While at speed, the car will "restart" itself, but if it stalls while stagnant a manual restart is necessary. When the stalling occurs, warning lights do not appear on the dash. Lately, however; the crank position code P0339 has come up with the check engine light. I recently experienced a crank position sensor code followed by a cylinder 3 misfire which caused the car to go into limp mode. Once I replaced the MCM, the misfire went away. Most recently (today) the car stalled in the middle of an intersection while making a left turn; my [XXX] son was in the car with me. Since it was a stop light, the car was able to be restarted in time, but had it been a stop sign/non-stop oncoming traffic, the situation could have been much worse. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Dec 27, 2022 · Engine, Fuel system · VA

Every time I fill my gas tank it takes 20 minutes to fill it just keeps shutting gas off at handle. I have checked a Jeep forum it says it is a roll over valve in gas tank and entire tank has to be replaced at a cost of around 800.00 to 1000.00 dollars. It also caused engine to run rough and shut off a lot. This is something Jeep should have to repair at their cost not consumers. It has been going on for about 6-8 months and it scare me each time it happens Thank you

Filed Jun 14, 2021 · Engine · 101,858 miles · GA

The contact owns a 2016 Jeep Patriot. The contact stated while driving at various speeds, the vehicle lagged and hesitated before accelerating. There was also rough idling while stopped at a stoplight with an abnormal grinding sound coming from the vehicle. The vehicle stalled intermittently on several occasions. The vehicle was taken to an unknown dealer but was not yet diagnosed. The contact stated that the vehicle was taken to the dealer four times prior for the failure and the catalytic converter was replaced as part of a recall, the coolant was flushed, and the engine was repaired however, the failure recurred. The manufacturer was made aware of the failure but informed the contact that the VIN was not under recall. The contact was relating the failure to the federal safety agency Campaign Number: 16V907000 (Engine and Engine Cooling). The failure mileage was 101,858.

Filed Feb 1, 2020 · Driver assistance, Engine · 84,000 miles · KY

Traveling 40 MPH engine misfires check engine, throttle body, and traction warning lights on. Vehicle will not accelerate. Turn off engine resets throttle body and traction control warning lights check engine light remains on vehicle accelerates normally. Check engine code = u0401 invalid data received from engine control module/powertrain control module a. 84,000 miles

Filed Oct 23, 2019 · Engine · 28,000 miles · IL

Engine idles rough. Check engine, traction and throttle control waning light came on. Car sputtered and would not go over 30mph. Would almost stall when accelerating from a stop. Took to nearest dealership and was told the throttle body needed to be replaced. Picked up the car to take to my mechanic but the lights never came back on. Have driven roughly 100 miles since. Car still runs rough and has for about a year.

Filed Sep 14, 2018 · Driver assistance, Electrical · 44,465 miles · MD

While driving the car runs rough. I've scanned the car and no codes come up. I was driving and the etc light flashed and it felt like the time went out. I was afraid that my car went out of time. While driving and shifting the transmission sometimes slips out of gear prematurely. I was driving straight when all of these problems happened.