Q: My car is not starting when the MAF sensor is plugged in - 1991 Nissan Serena

asked by on

It is not revving properties

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 often times results in the engine starving for air or fuel.

This is what causes the hesitation or loss of power you describe. This can also cause the engine to struggle to idle for the same reason. In your case, when unplugging the mass air flow sensor, your car’s engine is bypassing the mass air flow sensor input into the ECU causing it not to have a reference point for air/fuel mixture. This may momentarily start the car, but it will not run correctly or rev up normally as you have experienced.

I would suggest having a professional, such as one from YourMechanic, come to your home to diagnose and replace the mass air flow sensor.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. My car is not starting when the MAF sensor is plugged in - 1991 Nissan Serena

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 have a new battery, and my car starts with a jumper cable, but it won't restart after driving and shutting the engine off.

This suggests you may have a bad grounding issue or potentially a faulty alternator. As you may know, the alternator is what charges your car's battery when the car is running. When this is not working properly, your battery will...

Q: Q: How do I check the engine oil level?

Checking the oil level is an essential part of owning a vehicle. You should check the oil levels with regularity, especially before and after long trips. Checking the oil is easy: 1. Park the car on a flat surface, and...

Q: Car idles rough wants to almost do and kinda jumps when at stop lights and lights flicker but stops when given gas

There are a few components that could be causing your problem. You may want to start by doing some voltage testing on the battery and the alternator. If you know your alternator and battery are good, look at the drive...

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.