What causes engine surge while driving?
If an engine is not getting enough fuel (this is called “running lean”), due to fuel pressure (regulated by the fuel pump and regulator), restricted fuel injectors, a vacuum leak or really anything that throws off the fuel mixture going in to the engine, this can cause the surge.
Why does my car feel like its losing power when accelerating?
There are many reasons why your vehicle may be losing power, especially when accelerating. Some of these common causes are: Mechanical problems such as: Low compression, clogged fuel filter, dirty air filter, clogged Exhaust Manifold. Malfunction of actuators such as: Bad injectors, bad fuel pump, bad spark plugs.
Why does my Subaru Forester surge and hesitate?
Shifting into neutral stops the surging and idle stabilizes. Engine occasionally stalls or almost stalls when driving very slowly like through a parking lot. Engine power is jerky at all speeds (used to be just at slow speeds but getting worse) unless you are deep into the throttle at higher RPM (like 3,000-4,000 + ).
What causes no start on a 2002 Forester?
6, IAC is Idle air Control. Once you have the throttle open, this is out of the picture. Your 02 Forester has a MAP (Manifold Absolute Pressure) sensor. It can cause a no start, no run, but doesn’t usually cause the intermittent problems seen with a contaminated MAF sensor strip.
What to do if your Subaru Forester is stalling?
Before troubleshooting any automotive issue, including stalling issues with the Forester, make sure that you check the vehicles trouble codes with an OBD2 scanner. Trouble codes are always a great place to start diagnosing problems on today’s modern computer controlled vehicles. Without them, you are in the dark. These codes are vital to diagnosis.
What does it feel like to run out of gas in a forester?
My Forester has roughly 60,000 miles on it. Recently it has been surging/hesitating/jolting. It feels as though the car is on and off running out of gas. It happens to most when accelerating (especially up a hill) but is happens more lightly while cruising.