Skip the auto shop - Our mechanics make house calls

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 1000 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
  • Home
  • Questions
  • 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: Van stalled, now cannot be started - 1991 Volkswagen Vanagon

Hey there. Your repairs seem to have focused on electrical (or lack of spark) issues. First, confirm that you now have a good spark at the spark plugs. If so, move on to the fuel system and check the fuel...

Q: What does the low tire pressure Warning Light mean?

The low tire pressure Warning Light is located on the instrument panel. If the light flashes for one minute, and then illuminates consistently, then the Tire Pressure Monitoring System (TPMS) is malfunctioning. If the light illuminates without ever flashing, then...

Q: Car is revving high constantly with loud noise and makes the engine sluggish

The most common cause of this revving is either a stuck throttle or the mass airflow (MAF) sensor. This fault should be addressed as soon as possible for normal operation as this revving can become dangerous if the vehicle is...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.