2015 Infiniti QX80 Engine Problems

“First I want to make it clear that I love my vehicle, however it has an issue with starting the engine occassionaly. In the beginning I was blaming it on the battery, I had that checked several time and all seemed to be ok? After several times of this happening I decided I was losing confidence in the testing and I purchased a new battery. That seemed to take care of the problem for 10 months, when it started again and has happened 3 times since. I had a friend jump start me and I drove staight to the dealership I had purchased the vehicle and battery from. …”

“I purchased a 2015 Infiniti QX80 on March 31, 2021. Since the purchase, I have only driven it approximately 6,000 miles and the check engine light has already come on. I took it to the dealership and they stated that both Catalytic Converters need to be replaced. This vehicle is only 6 years old; it should not need both Catalytic Converters replaced. Upon research, I discovered that there was a recall on 11/28/2014 for certain 2014-2015 Infiniti Q80 vehicles. …”

“The contact owns a 2015 Infiniti QX80. The contact stated that on several occasions while driving approximately 20-25 MPH, the vehicle lost power, the engine revved abnormally, and the transmission failed to shift as intended. There were no warning lights illuminated. The vehicle was taken to a dealer; however, the cause of the failure was not duplicated. The manufacturer was not notified of the failure. The failure mileage was approximately 85,000.”

“The contact owns a 2015 Infiniti QX80. The contact stated that while accelerating from a stop sign, there was an abnormal sound coming from the vehicle. The contact veered to the shoulder of the roadway to inspect the vehicle but found no issues. The contact drove the vehicle to an independent mechanic to be diagnosed. The contact was informed that the high-pressure fuel cap had disintegrated which caused metal fragments to enter the engine. The contact was informed that the VIN was not under recall. …”

“The most glaring safety issue caused by below is the SUV will try to move forward on its own while stopped and the brakes pressed that can potentially cause a fender bender. Infiniti/Nissan 5.6L engines have a history of failed or failing viscous cooling fan clutches. This goes back over a decade based on the TSG released by NISMO. When the viscous fan begins to fail, the most glaring symptom is that ECM will compensate by revving up the engine RPM...specially with the AC on. This can cause the RPM to go from around 500 to 1000 RPM during an RPM surge. …”