Infiniti Q50 owners have reported 4 problems related to engine belts and pulleys (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Infiniti Q50 based on all problems reported for the Q50.
Engine has rough idle while in park. Even after the following maintenance was done. Replacing spark plugs, engine software update, coolant flush, power steering flush, fuel system clean, new mass air flow sensors both sides, serpentine belt, all new gaskets on top part of engine, valve cover, intake manifold, spark plug tube seals. Flushed rear and rear diff and transmission. Steering is heavy to turn. The colder it is outside the worse the engine shakes. Throttle response is delayed at times. Transmission shifts hard the worse the engine shakes. Colder it is the slower the windows roll up and down along with the wipers. Engine drops rpm when turning wheel while in park. When driving engine drops about 100 - 200 rpm then keeps going back up under acceleration but causes transmission to shift hard. This problem causes the output shaft seal to break and rear wheel speed sensors were replaced. After a sharp turn car hesitates to accelerate even if hard on the gas. Extreme cold temps outside make the engine almost sound as if something inside engine internals is not right. Hot and humid weather makes it run the best. No check engine light problem started at 90,000 miles now im at 126,000 miles and still no fix and no check engine light. Loss of engine power. Even going up the smallest hill incline maybe a couple feet over a distance of maybe 3 blocks engine downshifts to 5th gear just to maintain 70mph even though I can be going 50mph in 7th gear. Car jolts forward when coming to a stop as if the output shaft is still spinning at a different speed than the engine. Can cause an accident if not fixed. Other Infiniti cars seem to have the same problem. Even the g37.
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all problems of the 2014 Infiniti Q50
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Vr30ddtt serpentine belt keeps shredding.
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all problems of the 2018 Infiniti Q50
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My power steering belt snapped off. Prior to that, my brake pedal was loose enough to move it up and down roughly a 1/4 of an inch with my foot. The only way to engage the cruise control was to hold the brake pedal up with my foot, then in order to keep the cruise control engaged was to keep holding the brake pedal up with my foot because it would sense that the driver slightly tapped the brake pedal to disengage it if I stopped holding it up manually. I had to have the brake pedal bolt tightened. It has happened again and I can't reach the bolt, so I have to pay to have it fixed again along with the other issues. The other issue is my a/c blend door is not operating, which is causing the two driver side a/c vents to blow warm air out of them while ever other vent blows ice cold . Not fun in these incredibly hot and humid georgia summers.
While I was driving my Infiniti on the highway my serpentine belt snapped 4 different times while in motion. All within one year. Including me getting my car back from the dealer and them letting me have it back that way. Also, the tires are horrendous, from day one, they pulled the car left or right on the car. All the settings were correct on the car. I wanted to have the tires replaced, by the manufacturer, and that can be done because no it's to long and everyone took to long to make things happen. Not to mention dunlop is impossible to get a hold of.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems | |
| Engine Belts And Pulleys problems | |
| Gas Recirculation Valve (egr Valve) problems | |
| Timing Tensioner problems | |
| Engine Stall problems | |
| Water Pump problems | |
| Check Engine Light On problems |