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04-24-2014, 12:54 PM
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#1 |
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Avid TSL User
Join Date: Jan 2008
Location: Milwaukee, WI
Posts: 111
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P0137 - '07 Aero
I've posted this on the other board but haven't been able to figure it out yet. Code is stating the second O2 sensor has low voltage. I've replaced the sensor with a Bosch #16175 from eeuroparts and installed a new battery. I've also checked the plug. I will start the car, reading is about .5 volts then tapers off to 0. If I unplug the sensor all together I get .5 volts steady. Plug it back in, bang 0 again. Getting frustrated.
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'95 900se, '07 9-5 Aero |
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04-25-2014, 10:17 AM
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Elder
Join Date: Sep 2004
Location: Annapolis, MD
Posts: 2,522
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Some sensors use the exhaust as a ground and as such, need a ground strap.
If it's broken, you get super wonky readings. I'd look for that. There's usually a ground strap or bracket on the downpipe between the sensors, or very close to them.
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Craig R. 2008 9-5 Aero-1995 900T 'vert |
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05-07-2014, 05:14 AM
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#3 |
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Avid TSL User
Join Date: Jan 2008
Location: Milwaukee, WI
Posts: 111
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There's a mounting bracket that connects the exhaust to the engine. I checked it, nice and tight. I also went through the O2 wiring diagnostics in the WIS. Wiring checks out. Could these type of readings indicate my cat is bad?
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'95 900se, '07 9-5 Aero |
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05-14-2014, 05:08 AM
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#4 |
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Avid TSL User
Join Date: Jan 2008
Location: Milwaukee, WI
Posts: 111
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This fixed it.
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'95 900se, '07 9-5 Aero Last edited by nocluetim; 05-14-2014 at 05:13 AM. |
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05-14-2014, 05:48 AM
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#5 |
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Elder
Join Date: Sep 2004
Location: Annapolis, MD
Posts: 2,522
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so.. bad Cat?
heck of a reason to go 3"
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Craig R. 2008 9-5 Aero-1995 900T 'vert |
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05-14-2014, 06:40 AM
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#6 |
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Avid TSL User
Join Date: Jan 2008
Location: Milwaukee, WI
Posts: 111
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Yes, I believe it was a combination of a bad cat and a crappy bung extension someone welded on to repair stripped threads. It moved the sensor about 2 inches away from the flow.
"If you have the means, I highly recommend picking one up." -Ferris Bueller
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'95 900se, '07 9-5 Aero |
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05-14-2014, 08:26 AM
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#7 |
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Avid TSL User
Join Date: Jan 2008
Location: Milwaukee, WI
Posts: 111
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'95 900se, '07 9-5 Aero |
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05-14-2014, 10:40 AM
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#8 | |
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Elder
Join Date: Dec 2006
Location: Los Angeles, CA
Posts: 3,021
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Pffff.... yes. That's your problem.
Glad you found a nice 3" workaround!
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