dburdick Posted April 21, 2012 Share Posted April 21, 2012 Replaced the PCV and cleaned the IAC. It was time for both to be done based on the grime. Car seems to idle better, but I still have the inconsistent bucking. On my way to the parts shop to get the PCV the check engine light came on. Codes P0302 and P0304 came on. Misfire in cylinders 2 and 4. Plugs and wires are new, so it's not that. The print out at the parts place says it could be a leaking, or blocked injector??? Does that sound right? I should replace #2 and #4 injectors? Link to comment Share on other sites More sharing options...
dburdick Posted April 25, 2012 Share Posted April 25, 2012 I bought a Multimeter today because I did not want to put in the expensive injectors that I purchased (I can take them back if I don't use them). I started off testing the throttle position sensor because I started to convince myself that it was the problem. It tested in spec, so it's not the issue. Now on to the coil. The primary resistance is not showing any resistance. My meter is definitely working and I tried several times to get a reading. I tested the secondary resistance and that tested in spec. I am really confused why my check engine light would not stay on if this is the issue, but oh well. I am going to grab a coil tomorrow morning and I will post back if I've resolved my issue. Link to comment Share on other sites More sharing options...
dburdick Posted April 26, 2012 Share Posted April 26, 2012 So...I have bad luck. The short story...My issues were caused by a very clogged PCV and the front o2 sensor. Long story... I believe the clogged PCV pushed oil into the spark plug tubes due to being so clogged. What bad luck...like I said before I was on my to the parts store for the PCV when the oil issue happened which is what made the 2 & 4 cylinder show a misfire. I replaced the PCV and replaced spark plug 2 & 4 due to the oil. I put the car back together and took it for a test drive. The car was still having issues, so I thought I would take a shot at disconnecting the o2 sensor as ferret suggested. Disconnecting it did not make the car run better, so I thought that was not it. On to today's festivities. I replaced the coil due to not getting primary resistance. I tested the replacement coil and the same issue...no primary resistance. I replaced it anyway, just in case. Not the issue. No difference. I believe the Haynes manual is incorrect with being able to measure primary resistance on the 2000 Outback coil. The parts place seconded not being able to test the primary resistance on this particular coil. Maybe we are wrong. On to the injectors. I replaced the 2 & 4 fuel injectors knowing if this was the issue that it probably only needed one. This also did not fix the issue...I figured as much. I was at a loss...I then decided to check the 1 & 3 spark plugs even though I did not have any misfire codes anymore. What do you know...1 & 3 spark plugs also had a teeny bit of oil on them. I replaced those spark plugs. Now the car was really starting to run better. It still felt choked a little on acceleration and it would still randomly have great acceleration, then go back to choked acceleration. It was at least drivable at this point (no severe bucking like the last couple days). I thought I would try unplugging the o2 sensor again....bingo...the car ran better than it has in long time. Good even speed and more power than ever. Sorry for the book. Link to comment Share on other sites More sharing options...
jemcdon Posted April 27, 2012 Author Share Posted April 27, 2012 After changing the PCV and cleaning the idle air solenoid valve, I had another intermittent idling/loss of power event that lasted about 4 minutes. It happened while the car was cold. what should I look at replacing next? jeff Link to comment Share on other sites More sharing options...
dburdick Posted April 28, 2012 Share Posted April 28, 2012 I'm definitely not a pro like Ferret, or nipper, but have you tried unplugging the front o2 sensor like Ferret suggested? Also, what code was popped when the check engine light came on? Link to comment Share on other sites More sharing options...
jemcdon Posted April 28, 2012 Author Share Posted April 28, 2012 I'm definitely not a pro like Ferret, or nipper, but have you tried unplugging the front o2 sensor like Ferret suggested? Also, what code was popped when the check engine light came on? As I mentioned earlier, there was no code stored from the check engine event and each time the event happened, it ended before I could get to a place where I could disconnect the o2 sensor. jeff Link to comment Share on other sites More sharing options...
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