What to do if your Subaru Forester misfires?
Extremely Frustrated – Misfires! I’m so freaking frustrated right now, it’s not even funny… Took the car to the shop after misfire on 2 & 4 that started out of nowhere a couple of weeks ago, they said to replace the plugs and coil packs on that side.
What’s the cel code on a Subaru Forester?
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.
Why is the oil control valve on my Subaru Forester stuck?
The oil control valves on the 2.5 DOHC engines controls the variable valve timing. So with it stuck in the open position it was throwing of the timing off at idle.
When does a Subaru Forester make a clunking noise?
It happens really fast (within a second to a second and a half of starting it). It will NOT do the clunking noise again until the engine cools back down (being off for 20 minutes or more).
What is the misfire code on a Subaru Forester?
The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 4 into the exhaust. Mileage may suffer as well when your Forester has P0304 as well. P0304 is a cylinder specific misfire code, which means that Cylinder 4 is misfiring and causing the code.
What does a cylinder 4 misfire code mean?
P0304 is a cylinder specific misfire code, which means that Cylinder 4 is misfiring and causing the code. An important thing to understand when finding the location of Cylinder 4 is that it’s going to be the 4’th cylinder in the firing order of the vehicle, and not the 4’th cylinder that you might see when looking at the engine.
Where is the first cylinder on a Subaru Forester?
An important thing to understand when finding the location of cylinder one is that it’s going to be the first cylinder in the firing order of the vehicle, and not the first cylinder that you might see when looking at the engine. The P0301 Subaru trouble code will trigger the Forester’s service engine soon light.
What causes the p0304 trouble code on a Subaru Forester?
There are quite a few things that can cause the P0304 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: Bad Spark Plugs – Spark plugs are one of the most common causes of P0304.
Extremely Frustrated – Misfires! I’m so freaking frustrated right now, it’s not even funny… Took the car to the shop after misfire on 2 & 4 that started out of nowhere a couple of weeks ago, they said to replace the plugs and coil packs on that side.
What does flashing cel mean on a Subaru?
Flashing CEL = Gross misfire. A DTC is not always stored. The resolution is generally one of the ones listed above. FYI-The bugeyes were plagued with misfires. Updating the ROM in the ECU to the latest revision from Subaru helps alleviate most false misfire issues.
What causes a DTC to misfire all cylinders?
Misfires all cylinders: Coil pack connectors mixed up (correct way:black to back,white to front),light weight flywheel,bad/unplugged crank or cam sensor,incorrect gaped plugs,cam timing off or wrong spark plugs. Flashing CEL = Gross misfire. A DTC is not always stored.
How to find out if you have a misfire code?
Misfires are one of the hardest things to track down and they’re almost impossible to diagnose over the internet. This gives people a great place to start. Yesterday I’ve replaced 4 plugs and 1 coil pack.
https://www.youtube.com/watch?v=REWqJVQWxOY
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.
The oil control valves on the 2.5 DOHC engines controls the variable valve timing. So with it stuck in the open position it was throwing of the timing off at idle.
It happens really fast (within a second to a second and a half of starting it). It will NOT do the clunking noise again until the engine cools back down (being off for 20 minutes or more).