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Old 11-24-2008, 09:13 AM   #1
johnowilson
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Member#: 195402
Join Date: Nov 2008
Default 1997 Subaru Outback Legacy

I have a 97 5 speed Outback with 170,000 miles.
It has had all the major repairs that happens with this vehicle.
I have 2 questions.

1. My gas mileage has really gotten poor, and never had the oxygen sensors replaced. A friend hooked up his computer and the codes mentioned both oxygen sensors are faulty. Do I need to use a Subaru sensor, or may I install an after market sensor?

2. My cooling fans run continually when my key is on ACC position, and my check engine light blinks off and on. It sounds like the relay is switching off and on and off and on, the fan just keeps cycling on and off. This happens whether the engine is warm or cold. However, when the engine is running the fan appears to work appropriately.
I disconnected a single green wire under my dash, and the fan stopped continually running when the key was on ACC position. Also, the blinking check engine light disappeared. When the engine is running, the fans appear to be running normally, especially when the AC is turned on. Can I leave that single wire disconnected, or should I reconnect it and start to replace relays or???

thank you
JW
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Old 11-24-2008, 09:34 AM   #2
Mulder
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Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

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Leave the green plugs disconnected. They are for diagnostic/pre-delivery use only and should never have been connected in the first place. Apparently somebody (you or another person working under the dash) saw them hanging and plugged them in.
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Old 11-24-2008, 09:43 AM   #3
johnowilson
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thank you
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Old 11-24-2008, 10:25 AM   #4
johnowilson
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how about the oxygen sensors?
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