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Subaru Crew Problems & Solutions

18389 messages,  Last post on Dec 05, 2009 at 12:44 PM

You are in the Subaru Crew Forum. Your Host is kcram

What is this discussion about? Subaru Impreza, Subaru Outback, Subaru Forester, Subaru Legacy, Coupe, Sedan, Wagon, SUV




Your Community Leaders are ateixeira and rsholland.


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#18237 of 18389
Re: AC/Fan Problem? [colin_l] by sloanesq
Jul 20, 2009 (12:11 pm)
Reply

Replying to: colin_l (Jul 20, 2009 10:42 am)

The fans definitely go on. I can see them spinning. The problem is, they shut off when they shouldn't - when engine speed is low for more than a few minutes.
#18238 of 18389
Re: AC/Fan Problem? [sloanesq] by colin_l
Jul 20, 2009 (12:32 pm)
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Replying to: sloanesq (Jul 20, 2009 12:11 pm)

That's rather odd. Are you completely certain that your AC condenser fan isn't cycling on and off? It makes quite a bit of noise.
 
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
#18239 of 18389
Re: AC/Fan Problem? [colin_l] by sloanesq
Jul 20, 2009 (12:53 pm)
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Replying to: colin_l (Jul 20, 2009 12:32 pm)

I'm pretty sure that it is the radiator fans that are going off - that wold explain the overheating. Also, my mechanic looked at it, said the fans weren't going on, and "solved" the problem by whacking the housing with a hammer. It actually seemed like it was fixed for a while.
#18240 of 18389
Re: Misfire [girlcarbuilder] by phil2000
Jul 20, 2009 (7:34 pm)
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Replying to: girlcarbuilder (Jul 05, 2009 5:10 am)

I get static on my car radio (AM stations only) that changes with speed and is more evident when the blower motor is on. Is this an indication of something tied to the misfire?
 
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.
#18241 of 18389
Re: Misfire [phil2000] by hammerhead
Jul 20, 2009 (7:57 pm)
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Replying to: phil2000 (Jul 20, 2009 7:34 pm)

You're hearing alternator whine and static that varies depending on blower motor speed?
 
Bad ground on the radio. Has nothing to do with the misfire.
 
Cheers!
Paul
#18242 of 18389
Re: Misfire [phil2000] by colin_l
Jul 21, 2009 (5:20 am)
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Replying to: phil2000 (Jul 20, 2009 7:34 pm)

Phil, I glanced at your profile and saw a 2000 Forester and what looks like high mileage per year.
 
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.
#18243 of 18389
Re: Misfire [colin_l] by phil2000
Jul 21, 2009 (7:38 pm)
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Replying to: colin_l (Jul 21, 2009 5:20 am)

Around 200K in March of 2006 I replaced the Cat. In previous post (March of 2009) I explained that some antifreeze got into the cylinders. It is my feeling that the O2 sensors got fouled.
 
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.
#18244 of 18389
Re: Misfire [phil2000] by colin_l
Jul 22, 2009 (9:00 am)
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Replying to: phil2000 (Jul 21, 2009 7:38 pm)

I see, Phil. I had the heads off my '99 Impreza RS twice, and got quite a bit of antifreeze in the exhaust both times-- some oil, too, but less. No problems with trouble codes or driveability, other than burning off the stuff when firing up the car afterwards.
 
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?
#18245 of 18389
Re: Misfire [colin_l] by phil2000
Jul 22, 2009 (9:27 am)
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Replying to: colin_l (Jul 22, 2009 9:00 am)

I do not know if you read my posts from the start (Nov 07) that so much junk went through the exhaust with the bad valves. That the sensor needs replacing. I am going to give it a shoot. I need to get the car to appoint that it can be inspected. I have been blessed that I have only gotten pulled over twice for the window sticker(over the pass 18 months).
#18246 of 18389
Re: Misfire [phil2000] by colin_l
Jul 22, 2009 (11:00 am)
Reply

Replying to: phil2000 (Jul 22, 2009 9:27 am)

Phil-- nope, sure didn't. But I'm more confident in your path now.

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