Markr1001 wrote:
> i am wondering if there is a reliable way to check the O2 sensor on a
> 89 pontiac sunbird 2.0 OHC. i have read about a few different ways, but
> they all say you need a GOOD multimeter. my meter is not that good, it
> does quite alot and got me though my electronics course in college, but
> it isnt high impedence. any help will be greatly appreciated.
>
> mark
It's only about $30 or something like that and if it's been in there a
long time, the one you have is probably lazy. Personally, I do not
change mine unless I have the code for it. This sensor is one that
provides a pretty clear warning when it's not cycling properly.
As you found out, there are ways to check it though. The impedance of
your meter is not what's stopping you.