Q: I have a 2014 genesis coupe 2.0t, in low rpms I have boost, when I step on it hard not boost, and it goes into a limp mode after

asked by on

I have a 2014 hyundai genesis coupe 2.0t my car is stock except for a short cold air intake. When I turn the car on I feel the car with boost and also when I drive it in low rpms, but when I step on it hard I got no boost and the car goes into a "limp mode", no boost at all after that, I got no CEL codes or anything, just no boost. I have to disconnect battery to reset everything but when I drive it again is the same story.

My car has 37000 miles.
My car has a manual transmission.

Depending on the cold air intake, you may be affecting the readings from the mass air flow sensor, which may be causing the motor to stumble when pushing for more boost as you describe. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays vital information to the ECM which uses this to make adjustments to fuel supply to the motor. A dirty or faulty sensor can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. This type of inconsistent fuel supply to the motor may cause a hesitation, loss of power, a jerking reaction, potentially a bit of black exhaust smoke and typically a strong smell of fuel when this sensor is malfunctioning. I would suggest having a professional from Your Mechanic come to your home to diagnose and inspect your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I have a 2014 genesis coupe 2.0t, in low rpms I have boost, when I step on it hard not boost, and it goes into a limp mode after

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Timing chain jumped 2 teeth on my 2011 vw gti

I would stongly recommend taking your vehicle back to the place that changed the oil and showing them the information that the dealership gave you. I would request that they compensate you for the issues you are having with your...

Q: After hitting a median, my slip indicator light came on. I had the struts replaced today but the light stays on. Any suggestions?

If you hit something and bent a strut, it is very possible that your wheel speed sensor wiring was stretched. If the wheel speed sensor wiring was stretched or damaged in any other way, It could be the cause of...

Q: Does the bumper of my car need to be taken off to replace windshield washer fluid motor?

According to the Factory Service Manual for your vehicle, the front bumper does indeed have to be removed to gain access to the washer motor. Occasionally, manuals are mistaken as to procedure and/or "access", and thus there are sometimes acceptable...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.