What was the error code that was stored when you went to get it checked? One other possibility is the wiring from the O2 sensors to the computer may be damaged. Or there could be a vacuum leak. Or it could be...?
http://metersupport.com/manuals/82170.pdf
Basically it says to set the meter to the highest ohm reading, and then turn it to lower settings as you are measuring.
behind his front seat. check after post #200.
I think this is an interesting thread because so far we have had about an equal measure of successes and failures. renoxp777 has somewhat succeeded because he has increased his MPG from 16-18 to ~25 now, whereas goodBourbon tried to duplicate the...