[V8] More o2 sensor woes...

[Dave Saad]

You can do a sort of basic functionality test with a propane torch.
Clamp the sensor in a vice (preferably not near anything flameable...)  
by the area where the socket wrench grabs it. (the hex nut area)
Put a voltmeter + on the (usually) black signal wire and the volt  
meter - wire on the vice somewhere. It needs to make electrical  
contact with the body of the sensor.

Fire up the torch.  As you heat the tip (don't go crazy here - you can  
probably kill it with too much heat), you should see the voltmeter  
begin to register at least 1 volt if I remember right.  If you can't  
get that reading the sensor is definitely dead.  If you do get a  
reading, it works at least a little, but may be "too slow" to be much  
good to the cars ECU.

Dave



On Apr 2, 2009, at 4:56 PM, NIck Miller wrote:

>     That was the most short lived happiness ever.  I had about 4 days
> before my car threw a 2341 2342 at me again, and started idling like
> crap.... again.
>      I was wondering if anyone knows where/how I can test an 02  
> sensor.  I
> did check the heater wires and they seem about right for a heater.   
> 14k ohms
> on the sensor side, and about none on the car side.  My fuse No. 5  
> is fine.
> I can't get a reading on the sensor wire through the ground, so I  
> guess
> there has to be a way to test it.
>
>      I'm just curious if it could be that after 100 miles an O2  
> sensor is
> bad, again?  I think I have an exhaust leak where the cats connect  
> to the
> exhaust pipe on the forward end (pre-cat)  so could that be it?   
> Ugh.  This
> must be the *50th* time I've written you guys, so sorry for crapping  
> up the
> Inbox.  I'm getting somewhat distraught here, however.
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