Q: Shuddering and check engine lights blink so

asked by on

When I accelerate fast the check engine light flashes, and I lose some power and car shakes/studders. I already changed spark plugs and egr valve. Could this be my maps sensor??

My car has 114000 miles.
My car has an automatic transmission.

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the motor. When this fails, this 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 may cause a hesitation, loss of power or jerking reaction when this sensor is malfunctioning. I would suggest having a professional from YourMechanic come to your home to diagnose your mass air flow sensor.

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. Shuddering and check engine lights blink so

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: I just changed my oil and everything went well until the test drive. The car started knocking and sputtering bad and smoke idk wha

Hi Andrew. Thanks for sending the question tonight. Changing the oil involves three basic steps, draining the old oil, removing the old oil filter, and installing new filter and oil. In some cases, if the oil filter is not correctly...

Q: My brake light has been on for about a week. Today my ABS light and my battery light both came on at the same time.

It sounds like a fuse may have blown for the throttle control. You should check and replace any blown fuses. The ABS light will come on with the battery light if the alternator is failing as the system voltage begins...

Q: Power steering fluid shoots out of cap when turned off and wheel is not turned?

You may have an air leak at the pump and thus air is being continually drawn in, and building enough residual pressure that must be relieved once you shut the p/s off. The pressure is too much to bleed of...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.