Q: My car jerk's some times one week is good and the other week is bad.

asked by on March 11, 2017

My van works good in one week it acts up the next week it's back and forth
My car's transmission is unknown to me.

Either the EGR - Exhaust Gas Recirculation - has been plugged up or the MAF - Mass Air Flow - sensor is dirty or damaged. Try removing the vacuum line to the EGR and test driving the vehicle with the hose plugged up. If the symptoms change and make the jerking go away, then the EGR may be coming on when the engine is accelerating under a load forcing the engine to have a misfire condition. The MAF could also contribute to the symptoms of the same and cause the engine to have a misfire condition. If you need further assistance with your vehicle jerking on acceleration, then seek out a professional, such as one from Your Mechanic, to help you.

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

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

Brake fluid leaking

Hi there. There are two copper crush washers, one on each side of the banjo fitting (the "banjo" is the segment of the brake hose that the bolt is put through). The reason it is leaking is you appear to...

Putting water in radiator but keeps spitting out as im filling it

It is possible that the reason for the overheating is not related to the radiator being low on water. Overheating can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or...

Fuel pressure

There are a number of things that may cause low fuel pressure such as a weak fuel pump, clogged fuel lines, clogged fuel filter or a bad fuel pressure regulator. This can happen when the pump itself is not working...

Related articles

How Your ECU Uses Sensor Data
Today’s Today’s modern vehicles are made up of anywhere from one to seven computers that assist with the car’s day to day functions. An engine control unit (ECU), is a computer that similar to that of a laptop or smartphone...
The Best Used Cars to Buy If You're a Gardener or Landscape Architect
Gardeners Gardeners and landscape architects need to haul around quite a bit of gear. As a gardener, chances are you will need to transport a variety of mowing equipment, along with smaller implements. You may also need to move shrubs,...
What Does the Mass Airflow Sensor Do?
How How often does the mass airflow sensor need to be replaced? Mass airflow sensors (MAF) have no expiration date. They are not included on the manufacturer’s scheduled maintenance list of things to replace based on mileage, like spark plugs...