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  #21  
Old July 28th, 2009, 04:06 PM
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Phillip
1995 SW #487/500
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maybe I need to unplug my O2's on the Classic, I just got a code 45 yesterday....... My new used O2 sensor failed me..
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  #22  
Old July 28th, 2009, 04:11 PM
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Chris Snyder
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it's probably not your O2 sensors...
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  #23  
Old July 28th, 2009, 04:33 PM
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I am sure, that would be way to easy.
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  #24  
Old November 10th, 2012, 09:53 PM
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Sam Odio
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Hm, I think I just got myself into the same problem. Had an undercarriage wash / steam clean and then triggered code 44 a few miles after. The engine now misfires when it's labouring (eg: climbing a hill) and sometimes shudders when pulling off from a light.

The only o2 sensors that I know of are the ones in the front pipe. Are those the ones I should try unplugging?
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  #25  
Old November 10th, 2012, 10:00 PM
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O2I thought 44 was the IACV? If you pressure washed the truck and are having misfires I would look at plug wire and distributor cap.you only have two O2 sensorsm I've blasted them many times with the steam cleaner with no issue.
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  #26  
Old November 11th, 2012, 01:43 PM
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Sam Odio
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Error 44 is the lambda sensor-bank 1. I hear this is the o2 sensor and I think it's located in the exhaust front pipe right?

I'll check the distributor cap but crown14 had the exact same symptoms and code and it was the o2 sensor (see post 17). Before I start swapping stuff like the distributor (which is what crown14 did) I want to make sure it's not something simple.
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  #27  
Old November 11th, 2012, 02:35 PM
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Sam Odio
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I unplugged the oxygen sensors and it seems to run much better (though not perfectly). No more misfiring.

The lesson hear is to unplug the sensors before steam cleaning your engine since both I and crown14 had them short out.

------ Follow up post added November 11th, 2012 11:39 AM ------

Wow, before I buy the OEM oxygen sensor over at rover's north ($399) does anyone know of a good cheaper substitute?

I see the proline sensor is $136...
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  #28  
Old November 11th, 2012, 02:46 PM
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Jason England
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Swap them over before buying new ones. You want to be sure that is the actual fault.
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  #29  
Old November 22nd, 2012, 11:58 PM
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Sam Odio
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Well, in case anyone is googling and finds this thread...the problem was actually the ignition control module (despite the error code 44)
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