Why does my Subaru misfire?
Common causes are low fuel pressure and faulty fuel injectors. If the fuel injector is the problem, it can often simply be replaced; it’s also a good idea to check the fuel pump. Occasionally, a mechanical issue may cause an engine misfire–though this is relatively rare.
How do you check the ignition coil on a 2009 Subaru Forester?
The only tool you’ll need is a digital multimeter to measure resistance. Open your hood and unplug all four wire pin connectors on the coil pack. Plug the multimeter leads into the left two outlets on the face of the coil pack. The resistance reading should be about 0.73 ohms, plus or minus 10%.
What causes a Subaru Forester to misfire at random?
Something is causing cylinders to misfire at random, which is a lot less cut and dry than a cylinder specific misfire code. The P0300 Subaru trouble code will trigger the Forester’s service engine soon light.
What is the misfire code on a Subaru Impreza?
The one nice thing about P0301 is that it is a cylinder specific misfire code. This makes diagnosing the problems simpler than P0300, which means that the cylinders are randomly misfiring. It will often be accompanied by codes P0302-P0308. These particular codes indicate that there is a misfire in one of the other respective cylinders.
What to do if your Subaru Forester won’t start?
Drove it around the block, STILL no CEL code, still misfiring. Let it idle in the garage for a couple minutes, STILL misfiring and the computer still refuses to throw up a CEL. So I unplugged the two coil packs on cylinder 1 & 3 and the car didn’t start.
What causes trouble code p0301 on Subaru Forester?
There are quite a few things that can cause the P0301 trouble code to trigger the Subaru Forester . Here are the most common problems that will throw the code. They are presented somewhat in order from most to least likely to be causing the code: