Who sells O2 sensors ? best Price ? can I do it myself?  if so how?

Greg
-----Original Message-----
From: Modl6971 <Modl6971@aol.com>
To: ghamburg@vom.com <ghamburg@vom.com>; Vanagon@VANAGON.COM
<Vanagon@VANAGON.COM>
Date: Thursday, May 07, 1998 9:41 PM
Subject: Re: Low MPG & Carbon Monoxide Smell

>In a message dated 98-05-07 23:35:38 EDT, ghamburg@VOM.COM writes:
>
><<
> My 84 westy is getting poor gas mileage and seems to be giving off more
> exhaust then usual, any suggestions ?
> PS: it seems to be running ok W/ new air cleaner, catalytic converter, oil
> change, cap & rotor what else can I check fix or replace?
>  >>
> Have your O2 sensor changed and the fuel injection properly dialed in.
>Michael.
>