On Fri, 5 Oct 2007 16:11:48 -0400, Ron Komoroski <
Yes, you can test your O2 sensor by using your meter. Attach the positive
lead to the   sensor wire, negative to ground, and when it's warmed up the
meter should fluctuate around .5-.7 vdc. My experience doing this, though,
is that it doesn't really tell you much except that your sensor is working.
To set the mixture at the AFM (which it sounds like you need...) you have to
take it to a shop with a "sniffer" and have them set both the idle air screw
AND the spring inside the AFM at idle and higher rpms. I spent $50 having
this done and it was the best expenditure I've made yet in terms of
runnning. The AFM ain't no carburetor; you can't do it by ear--or using the
DVOM.

ronkom@JETBROADBAND.COM> wrote:

>We put over a thousand miles on the Westy visiting Nashville & cruising Tenn
>& KY. last week. I had the 4X super-zoot injector cleaner in the first tank
>of gas, & used nothing but Chevron 93 octane the rest of the trip. I was
>pulling a trailer w/a motorcycle (about 900 lbs. total) most of the way, so
>mileage of 15-17 mpg wasn't too far out of line. In general the old girl ran
>better & better as miles rolled up. However, I still have  missing & a rough
>idle. The exhaust pipe is sooty black inside. I took the idle control valve
>off & cleaned it out w/carb cleaner. It is "humming & buzzing" as per
>Bentley. So, I ordered a new coolant temp sensor from van-cafe that arrived
>today. I located the old one on the side of the thermostat housing. Before I
>attempt the swap-out, am I going to loose coolant? Will I introduce the
>dreaded air bubbles in the coolant? Any tricks?
>Another question, Bentley describes testing the oxy sensor using a CO meter
>in the tailpipe, is there a "shade tree mechanic" method I can use without
>the CO meter? (I do have a Fluke digital VOM).
>Thanks much for all the responses to my first Bow-wow blues post,
>Ron Komoroski