Skip the auto shop - Our mechanics make house calls

Q: Car pulling when I change gears.

asked by on

My car is pulling when I change gears. The scanner says the gas is too lean in bank 1. I think it might be the sensor or a hose is leaking , or retaining, air.

A: All the air that goes into the cars engine ...

All the air that goes into the cars engine is metered. If there is unmetered air coming in somewhere it will be detected by the Oxygen sensors and a lean code will be set. A lean condition will cause a drivability issue if it is severe enough, sometimes to the point of keeping the car from starting. Lean conditions are usually vacuum leaks. Something like a loose or torn air intake hose can trigger a lean condition code. A torn vacuum line or leaking intake gaskets can cause the lean condition also. A mechanic should be able to determine where the leak is and repair it. The code stored in your cars computer is very important and can help pin point the leak faster, so don't erase it.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Rattling from timing chain tensioner

Hello. Ford motors commonly have a problem with the timing chain making noise over time. Most of the time, the problem is that the timing chain guides are worn out. This could be causing the timing chain to hit metal...

Q: Steering wheel shaking

It is not good to hold the steering all the way to the left or right against the stops. This can stress the power steering components. Some shaking at the stops can be normal. I would ask for help from...

Q: rubber gromments not in transmission and screen on bottom of pan. will those rubbers cause a problem

Any foreign material making it's way through the transmission has the potential to cause problems. There is a chance the last person to service the vehicle did not install the grommets for the screens correctly or not at all and...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...