Date:         Thu, 17 Jun 2004 23:29:25 -0400
Reply-To:     Eric Zeno <vw4x4@FYI.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Eric Zeno <vw4x4@FYI.NET>
Subject:      Re: Checking the O2 sensor
Comments: To: Ryan Dawson <rdawson@UOGUELPH.CA>
In-Reply-To:  <1087522429.40d2467d3a4fd@webmail.uoguelph.ca>
Content-Type: TEXT/PLAIN; charset=US-ASCII

You will ground one lead of the meter to the engine, and run the other
lead to the O2 sensor. It puts out less than 1 volt. Most meters
will have a 1.5 volt scale, this is where it should be set. DC range.
The O2 sensor puts out very low current. Adding the meter, could give
you a false reading, because a cheap meter will add a load to the
circuit, witch draws down the real output voltage.

            Eric                   86-VW4x4
            vw4x4@fyi.net          86-SS Syncro
            Pittsburgh, PA USA     1936-Chrysler
                                   92-Jetta GWC
            www.fyi.net/~vw4x4/vw4x4.htm

On Thu, 17 Jun 2004, Ryan Dawson wrote:

> Hi Everyone,
>
> Can someone tell me whether I should have my multimeter set on AC or DC
> current, and what scale I should have it set at to take the reading?  This may
> be a dumb question, but I have no idea as I just got this tool.
>
> Also, if there is an exhaust gasket missing between the muffler and the CAT,
> will this affect the O2 sensor?
>
> Thanks,
> Ryan
>