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Showing results for tags 'p0301'.
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Hi all, This car (2007 Outback Wagon, base) was purchased a few years ago with a blown engine. I put a used engine from LKQin it. It got new timing belt, head gaskets, oil & water pumps etc before going in. It's been pretty good, all things considered. But ,for a long time I had nagging Cyl.1 misfire and a cat efficiency. I'm managed the cat, but not the misfire. >> I did see some fouling on the plug from #1 yesterday... << I have since putting in the used engine, I have done the following in the past 12 months... - Exhaust (not factory dealer) - Plugs, NKG (I'd have to look at which p/n - Plug wires, Belden - they didn't have the NKG and when I did the plugs #4 wire broke at the plug & couldn't wait - radiator - reman injectors (last weekend) I have run two cans of Jectron cleaner through with full tanks of fuel. The bloody check engine light will go out periodically. It has been out a couple of times (on it's own) since doing the injectors, but it comes back. I cleared codes yesterday and it came back about 30 minutes (of driving) later in the second run time of the short trip. I pulled 1 & 3 yesterday evening. Plug 1 did show not as clean & correct color as 3. Some fouling, can't say if it was oil or rich. I swapped 1 & 3 plugs when I put them back in, I'll have to pull and look at them now. I measured resistance for the Belden wires on 1 & 3 and they were close to each other and correct range for radio suppression wires. The engine definitely seems smoother at cold start idle after the injectors and I thought that was the end of P0301, but no! I do find it is idling low and rough after the code reset yesterday, but maybe that's just the system learning again. >>> I have run run a compression test. I will do that and report the numers. Maybe #1 is simply dead, but the car can get average 25 +/- mpg in general driving and low 27+ in highway, doesn't seem like numbers for a 3/4 good engine! >>> I've not replace the coil. Do I just do that next? (it is not COP, unfortunately) ??? This has the little 4 square coil pack and regular plug wires. Is this a "waste spark" type ignition and is there another "corner" of the coil I can swap out plug wires for a test? Please make suggestions for next steps! Parts, tests. Where would you go with this next? My daughter has been driving the car to school & the tabs have expired and I cannot pass emissions with the Check Engine on! Thanks, Tom
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Hello there, My Outback started running a little rough, and the check engine light would periodically come on (which also made the cruise control not work, and the cruise light to flash). Sometimes I would be driving down the freeway with the cruise on, and I hit a small bump, which made the check engine light come on and the cruise to stop working. I took it to the auto parts store about a month ago, and there was only one misfire (I thought it was #3, but I could be mistaken. It recently got worse, so again, I took it to the auto parts store to do a code scan, it came up with P0301, P0302, and P0304 which is misfire in cylinders 1,2, and 4. It's probably worth mention that my Subaru is past due for it's 60K Service. I also just changed the plugs, with identical NGK's which made no difference whatsoever. I did some browsing, and it seems there are a few common culprits: Ignition wires, Coil, Timing belt? I am going to try running the engine in the dark to see if I can see any sparks on the ignition componets, once I get that knocked out, I will update. Any suggestions, or ideas will be recieved with much grattitude! Thanks! Edit: Sparks observed by the wire boot on the coil side. I am gonna go pick up some plug wires and dielectric grase, and see what happens.