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Wagons Subaru Crew Subaru Crew Problems & Solutions
18393 messages, Last post on Dec 07, 2009 at 10:04 AM
You are in the Subaru Crew Forum. Your Host is kcram
Your Community Leaders are ateixeira and rsholland.
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Replying to: tim3 (Jul 13, 2009 10:10 am) - Fuel filter-- used to be a very easy-to-reach silver canister under the hood, don't know about your 2004 - Fuel injectors - buy a bottle of Chevron fuel injector cleaner, Techron is the best product on the market - Ignition: changing plugs is a relatively easy DIY job, ignition coil(s) are on top of the intake manifold, plug wires are easy to change as well. - Fuel pump -- it's in the tank and possible to change yourself, but by this point you probably want/need a mechanic to be involved. After all that's done, you've either fixed it or you've created a very short of list of what else could possibly be wrong. Evaporative systems will cause a check engine light (P0452 & P0453) but I don't think they can cause any driveability problems.. that I know of. Hope this helps, ~Colin
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Replying to: sloanesq (Jul 20, 2009 6:19 am) The first thing to check would be that the fans are actually plugged in. There are two fans behind the radiator and they have wiring plugs on the lower side. If you have a slim build, you *might* be able to slide under your Legacy for a look. (Put a piece of cardboard on the ground first.) Otherwise, you will have to jack up the front of the car or use ramps. ~Colin P.S. I am actually pained to admit that I once forgot to plug in the fans after working on my '99 Impreza RS.  If you are overheating enough to have the car pulled over, that's not good. From my personal experience, it didn't seem like the all-alloy Subaru motor was too durable for stuff like that. 
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Replying to: colin_l (Jul 20, 2009 10:42 am)
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Replying to: sloanesq (Jul 20, 2009 12:11 pm) If the main radiator fans come on at all, ever, then it could be a sensor, relay, loose / burnt wiring, etc. But it would really strange. ~Colin
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Replying to: colin_l (Jul 20, 2009 12:32 pm) |
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Replying to: girlcarbuilder (Jul 05, 2009 5:10 am) Also, the garage that inspected the car says that I am allowed one not ready. I think I am going to focus on the P0420 code. I replaced the upstream O2 sensor. Next payday, I will do the downstream.
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Replying to: phil2000 (Jul 20, 2009 7:34 pm) Bad ground on the radio. Has nothing to do with the misfire. Cheers! Paul |
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Replying to: phil2000 (Jul 20, 2009 7:34 pm) P0420 is catalyst efficiency. That's caused by the rear o2 sensor only, never the front, so your front o2 sensor was a waste I'm afraid. It's also likely the catalyst itself and not the sensor, if you have a lot of miles. Call some muffler shops and find out how much they want for a new catalyst and installation. Should be around $250-300.
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Replying to: colin_l (Jul 21, 2009 5:20 am) I can get a Cat off the Internet for about $260. And since I removed the head myself, the Cat is a piece of cake.
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Replying to: phil2000 (Jul 21, 2009 7:38 pm) I'll concede that my car had much fewer miles, roughly 30k-40k, but I don't think this would harm the oxygen sensors. They could be due for replacement anyway though, of course! If you've driven a lot of miles since March 2006, your cat could be bad (again?). Unfortunately, I've seen P0420 caused by misfires and other stuff that really doesn't have much to do with catalyst efficiency, in my personal opinion. So there is some risk that you're going to replace all these things that make logical sense, and still not have your solution. What's the answer? I dunno, how much for a complete engine from a salvage yard? 
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