Skip the auto shop - Our mechanics make house calls

Q: Help in pinpointing recent car issues/ performance.

asked by on

The car stutters when taking off sometimes resulting in misfire very seldom. Check engine light is on. Accelerating is slow and steady can't press pedal completely down or it chugs or jerks. Loss of power on incline. Idles slightly low at a stop with some slight sputtering. The codes came back MAF and Cylinder 4 misfire. Could be faulty. What is the most likely causing this problem. When up to highway speed don't notice any sputtering haven't heard any noises.

My car has 150000 miles.
My car has a manual transmission.

The Mass Airflow Sensor will cause general misfire codes. As far as cylinder #4 is concerned, you should still give it a quick inspection. The Mass Air Flow sensor is used to calculate a few different equations for the computer. When it is faulty or dirty those readings become skewed and can give you the poor engine performance like you have described. You may be able to improve performance with cleaning the sensor. If this does not help clear the code, then you want to look at replacing the unit. A faulty or dirty MAF sensor may also be the reason your cylinder #4 has a misfire. The computer is calculating that the engine is taking in more or less than the air it really is and is changing the fuel trim to match. This is likely causing the engine to perform the way it is.

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

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: Okay, my car is sputtering while driving and then jerks. Then after about 10 to 20 miles it cuts off when I come to a complete stop.

Sounds like the fuel system is being interrupted when you are driving. Check the following: There could be a clogged fuel filter. If enough particles accumulate in the fuel filter the pressure at the fuel rail can get low...

Q: Clutch not working properly.

This sounds like you have a busted clutch or transmission along with your axles being broken. The broken axles may be an indication that the transmission input shaft or clutch is broken. The engine oil cooler would have to be...

Q: Hey whats up peter, my name is Trayvon i wanted to get my mazda 6 fixed but dont know what all is wrong with the right tire can yo

Hey Treyvon. If the tire itself is stuck and won't roll forward or in reverse, then it is more than likely that the wheel bearing is damaged. Wheel bearings enable wheels on a car to spin freely and stay secured...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.