Q: Q: Jerking reaction

asked by on

I recently had a new air filter new spark plugs and a fuel system cleaning done on this car. However it continues to exhibit a slight jerkING when it is driven. It is a 2007 suzuki XL7.

My car has 104461 miles.
My car has an automatic transmission.

Hello, There are a few things that can typically cause a car to have a bit of a jerking reaction when driving. Low transmission fluid can cause this to happen when the transmission lacks sufficient transmission fluid required to build enough hydraulic pressure to cause the transmission to shift properly. Another common cause of this kind of symptom is a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays vital information to the ECM which uses this to make adjustments to fuel supply to the motor. A dirty or faulty sensor can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. This type of inconsistent fuel supply to the motor may cause a hesitation, loss of power, a jerking reaction, potentially a bit of black exhaust smoke and typically a strong smell of fuel when this sensor is malfunctioning. I would suggest having a professional from Your Mechanic come to your home to diagnose and inspect your vehicle.

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
  1. Home
  2. Questions
  3. Q: Jerking reaction

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: Where is the OK buttom to turn blind spot monitor on or off?

There is no "OK" button, rather you use the "select" button which appears as an arrow indicator that points to the right. The procedure to turn the BSM system on and off, and select the various options, is explained on...

Q: Q: Rattling noise from under the car

Hello, There are a number of things that may produce a rattling sound, however the most common are things like exhaust heat shields, fan pulley bearings or other loose body shield panels underneath the car. I would suggest having a...

Q: is 2007 Lincoln MKZ a good buy for $1900 with that many miles on it? and will it last till 300,000 miles?

Hello. If you are getting that vehicle for only $1900 then that is a good deal. If the vehicle is well maintained then it should last for quite some time. I have had a lot of these vehicle last over...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...