Q: Car hesitate when driving

asked by on October 15, 2016

With my car sucking in air from maf, cause it to run hot a little?

My car has 300000 miles.
My car has an automatic transmission.

Mass Airflow Sensor Replacement $188.36 - $786.53 Get a Quote

Hi there, 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. The MAF sensor does not actually bring into the intake; rather it monitors the air intake and relays this information to the ECU. It is possible that a lean fuel condition (caused by too much air and not enough fuel) may contribute to a warmer engine temperature. I would suggest having a professional from YourMechanic come to your home to take a look at your sensor

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I use the luggage cover?
Your car may be equipped with a luggage cover (it’s optional equipment). If it is, then you have an important tool for protecting items in the back from exposure to heat, light and even prying eyes. Here’s how to use...
How do I program a rolling code garage door?
You can program your vehicle’s Car2U system so that you can open your garage door with your car. If you have a rolling code garage door, programming may require a ladder, as you will need to be able to reach...
Hole in gas tank
It is never good to have a hole in the gas tank. The gas tank in your vehicle is plastic so it should only be replaced with a new tank. There are some tank repair kits available that would allow...
Steering to the right or left makes a noise.
I believer the cause of your noise is your power steering pump or belt. If your pump is making a loud whining noise then you may have a power steering leak (https://www.yourmechanic.com/services/power-steering-fluid-is-leaking-inspection) and the pump is starving for fluid. Check...
One of my power windows will not raise.
Hi there, thanks for writing in. It's hard to give a specific answer with no specific details regarding your vehicle or your exact problem, though I can tell you that there are several possibilities of what could be wrong. It...
Engine makes tapping noise, exhaust blows bluish smoke
If you are burning oil and you have a noise in the engine, then you need to have the noise checked to see if it is coming from a piston. You may also have valve problems and oil getting through...
Brake Fluid Level Insufficient Warning Sign Error
This may suggest that your brake pads are worn and due to be replaced or that you have a leak (https://www.yourmechanic.com/services/brake-fluid-is-leaking-inspection) somewhere in your brake hydraulic system. The brake reservoir has a sensor inside that detects when the brake fluid...
The transmission seems to be slipping.
I see your note about the color of the transmission fluid, but is the fluid level correct too? Dark or burned fluid along with a low level can cause the transmission to slip and if the fluid smells burned there...
No Start Condition - Starts, but Stalls... Is my Fuel Pump the Answer?
I wouldn't put a fuel pump on it just yet. There are a number of other possible faults. The first thing I would check for is air leaks. Any air that can get into the engine without passing through the...

Related articles

How Long Does a Coolant Level Sensor Last?
The The coolant level sensor uses a moveable float device and a reed switch that senses when the radiator has low coolant. Once the sensor detects low coolant, the driver is alerted by a light illuminated on the dashboard. The...
How Long Does a Manifold Temperature Sensor Last?
Keeping Keeping a car running at peak condition is a lot harder that most people think. The engine of a car is a very complicated piece of machinery that has just the right amount of fuel and air to run...
P0337 OBD-II Trouble Code: Crankshaft Position Sensor A Circuit Low Input
P0337 means that the crankshaft is suffering because of low voltage. This could be due to sensor not being aligned properly or electrical problems.