Infiniti QX56 loss of power problems

Filed Jan 18, 2022 · Engine · 140,000 miles · TX

The contact owns a 2011 Infiniti QX56. The contact stated while driving at various speeds, the vehicle would vibrate violently. Additionally, the vehicle had experienced intermittent power loss and had gone into limp mode. The contact stated that the check engine warning light was illuminated. The vehicle was taken to a local mechanic where it was diagnosed with needing the timing chain replaced. The vehicle was not repaired. The manufacturer was informed of the failure and informed the contact that the VIN was not included in a recall. The failure mileage was approximately 140,000.

Filed Sep 4, 2021 · Electrical, Engine · MD

Suv would not start so had to get a jump. 1 week later same thing. Had battery tested but was not bad and it had just been replaced by dealer in 2019. 1 week later again SUV would not start. Got a jump and took to jba infiniti in ellicott city, md who charged the battery for 2 hours. 2 weeks later, SUV is hesitating to start. I refuse to pay another $186 for them to diagnose and then recharge the battery again. After some research it looks like others are having this same issue. Next, catalytic converters. Suv is 8 years old and jba infiniti is telling me I need to replace them @ a cost of $7500. This is ridiculous.....I don't have loss of power but I so get the "rotten egg" smell sometimes. I would think this part would be covered under emission warranty for at least 15 years. I have 142000 miles on it.

Filed Jan 18, 2021 · Fuel system · 147,032 miles · NJ

While driving my 2011infiniti qx56 to work, the service engine light came on and the vehicle start losing power and shaking.after checking it I had codespoo21,poo87 and poo90. The codes are related to vvt solenoid and high pressure fuel pump.

Filed Jan 4, 2021 · Brakes, Electrical · 155,000 miles · TX

The vehicle will lose power to the brakes while driving intermittently. When problem occurs you will lose power steering and pressure to braking system. Also the driver hid headlamp gets moisture in it whenever it rains. I have had to replace the hid bulb about 6 times in the past year. Also there seems to be an electrical issue with the onboard computer that causes the tachometer to not work or read correctly.

Filed Jul 14, 2020 · Fuel system · 24,000 miles · PA

Was driving my vehicle and first noticed a drop in fuel economy. Later it was losing power and stalling. Gave me p0090 and p0087 codes. Happened in both driving and stationary positions. Turns out my high pressure fuel pump is bad.

Filed Jun 26, 2020 · Electrical, Engine · 270,000 miles · TX

While driving in residential/business area my vehicle completely lost power and turned off. I drifted to the side of the road without power steering. Tried to start vehicle again. Vehicle would start but would immediately die-would not idle. After resting approx 5 minutes I was able to start again and continue home. This has happened 3 times in the past 2 months. I am terrified to drive this vehicle again. I also cannot keep the drivers side headlight working. Bulbs constantly blow out at over 300.00 dollars each.

Filed Oct 24, 2019 · Engine · 137,500 miles · OH

Loud whistling/whining sound from the motor at start up. Extreme loss of power when starting up a grade or to get up to speed on the interstate causing fear of rear end collision. It appears to be a common issue with this vehicle that results in a timing chain or catalytic converter repair, costing several thousand dollars. It appears infiniti is aware of the problem but won't issue a recall for obvious reasons. This vehicle is now virtually inoperable as it is not safe to be on the road until it is fixed.

Filed Oct 11, 2019 · Engine · 70,000 miles · TX

Tl* the contact owns a 2012 infiniti qx56. The contact stated that the vehicle lost power and failed to accelerate. In addition, there was a humming noise coming from the engine. There were no warning indicators illuminated. The vehicle was taken to west houston infiniti (12200 katy fwy, houston, tx 77079, (281) 589-8900) where it was diagnosed that the brakes were wearing down. The contact stated that the dealer did not diagnose the humming noise. The vehicle was not repaired. In addition, the contact stated that the power steering pump was replaced by an independent mechanic. The humming noise recurred. The contact stated that the mechanic called the infiniti dealer and was informed that it was due to the timing chain. The approximate failure mileage was 70,000.

Filed Apr 22, 2019 · Electrical, Engine · 115,540 miles · NC

Was driving home, A/C was on, all lights was on, all of a suddenly lost of power to the engine and while going up hill, so I floor it so the vehicle so I can get past over the hill then I started to smell something through the vents like it was on fire coming from the engine bay so I pulled over and turned off the engine pop the hood but didn't see no fire, then when I tried to start the vehicle back up it wouldn't so I waited for few minutes and tried again, the vehicle started back up so I went on driving again but it didn't show any thing on the dash no check engine light at all. It done it again lose of power to the engine and I started smelling something burning like metal coming from the vents again lucky I was close to home when it done it again, I shut the vehicle off and put the scanner on it, it throw out 3 codes but it never showed up on the dash saying check engine light at all. For the 3 codes one was for fuel pump other was for 02 sensor and the other was ECM I believe, wish I wrote them all down.

Filed Apr 12, 2019 · Fuel system · 85,000 miles · FL

While driving "service engine soon" light came on, noticed power loss. Diagnosed with bad catalytic converter at 85k miles