What can cause acceleration hesitation?
A vehicle that hesitates while accelerating or while driving up a hill may have a weak fuel pump. Fuel injectors may become dirty over time and not be able to provide as much fuel to the cylinder as is needed. Dirty fuel injectors may cause the engine to run lean which will in turn, cause hesitation when accelerating.
Why wont my car accelerate when I press the gas?
The most common reasons why your car is having trouble accelerating is due to three main categories: Actuator Malfunction – bad spark plugs, faulty fuel pump, damaged fuel injectors, old fuel wiring, and other fuel component issues.
What happens if an injector fails?
A faulty fuel injector may cause a rough engine idle if it fails to deliver a steady, constant stream of flow to a vehicle’s engine. A dysfunctional fuel injector may inject too much or too little fuel into an engine’s cylinders. Both scenarios can cause a rough engine idle.
What to do about hesitation in a Subaru Outback?
I have a 2007 Outback that had the same symptoms. Taking the MAF (Mass Air Flow) Sensor out and spraying some electronic sensor cleaner on it removed the hesitation. There are just two screws that hold it in to the intake, so it is a quick operation.
Are there any problems with the 2010 Subaru Outback?
The chief problem with the 2010 Subaru Outback related to engine issues. In particular, stalling and hesitation were reported by several drivers. The most significant thing to know about the 2010 Outback was that there were seventeen recalls issued affecting this year.
Why does my Subaru hesitate when I accelerate?
Subaru 2004 2l auto tip tronic. It seems to hesitate or have slow or lack of power when you accelerate slowly Just resolved a similar problem on ’03 Forester 2.0 turbo. Car would not respond for 2 to 3 seconds when the accelerator pedal is pushed. Also, when it finally kicked in it lacked power.
Why did my Subaru Outback hesitate to change the spark plug?
My hesitation was due to my plug wire on #3 breaking apart after the last spark plug change (I pulled on the proper location of the wires to take the wires off). I changed them in the parking lot of the local Subaru dealership (when I was out of town!).