This is a discussion on IF YOU HAVE A MISFIRE CODE ,PLEASE READ THIS!!! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Originally Posted by JuSteve Just to reiterate. I've worked on lots of cars old and new and weird things happen. ...
On the intake there is a small electric device with a harness clipped to it. Is is about the size of a match box and located on the top of the intake after the filter section, and is black. This is the mass airflow sensor. Periodically it can accumulate dirt (especially if the filtration is sub-par -- read: aftermarket) and generate a PO171 "lean mixture O2 sensor" code or more rarely in my experience a misfire.
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New here. Just brought my first Subaru as im mainly a Rotary or nissan guy. Anyway I have just brought a 1999 jap import wrx wagon which has a misfire. I have changed fuel filter which has helped a wee bit but my main question is how do i access the fault codes? Do i need a diagnosis tool or something? Also how do i read the fault code?
I don't know how you would go about it on a '99 WRX. I have an access port which can read the codes. But more than likely your nearest Auto Zone will check your CEL codes for free.
Yes you would need a OBDII diagnostic tool to retrive the code. Once you have the code all you have to do is Google it or you can check here:
A Complete List of all SUBARU OBD2 error codes - i-Club
Shot cheers guys. I will go through the options above. If no love will take it somwehere to get code.
I have the 03 WRX, would you recommend the NKG Platinum Spark plugs? I need to replace mine and I think this could be the reason for my misfire codes.
I had misfire codes popping up all the time for no reason.
I changed the battery and it never happened again.
is the MAF trick doable on the 2011 wrx model? Im getting a misfire code on all cylinders and I feel like when I idle the car feels like its shaking. I get the feeling the ECU or something might be mis-reading the air flow or something.
Your 2011 should be under warranty. If so this is not your problem, it's Subaru Canada's problem.
you are correct sir, but my dealership is a pain because I didn't really buy the car from them. they also dont have a loaner car for me says there cars are all gone, but i'm ready to let someone have it so tomorrow hopefully I can get something