Keith Ovregaard wrote:
> Hi All,

snip..

> Symptoms: Starts and runs fine until warmed up and then comes a sudden
> loss of power, bucking, and sometimes dies when clutch is in.
> Restarting used to cure the problem for a while, but no longer does.
> Unplugging the O2 sensor cured the problem for 200 miles, but no longer
> does. Holding the throttle above idle produces on-off surging from 2000
> rpm to 4000 rpm. Will not stay at any given rpm except idle. If temp
> sensor is unplugged, idle goes up and rpm's rise normally when upping
> the throttle.
>
> Here's what I've done so far:
>
> Tested the following components with a good digital meter:
> AFM-OK before and after cleaning with electronic cleaner, re-tracking
> wiper arm, installing capacitor (no effect)
> temp sensor-OK, but engine runs fine when unplugged, although with a
> fast idle

snip...

> Any thoughts, ideas, shoulders to cry on?

I have no first hand knowledge of water cooleds but...
When you checked the temp sensor did you check it at the sensor?
Did you check it via the wire harness from the other end?

An intermittent or constant fault in the harness seems likely to me
since behavior changes if sensor is unplugged but the sensor itself
tests okay.

--

Wil

-- http://www.charmfx.com/

"When the people fear their government, there is tyranny; when the
government fears the people, there is liberty."
-- Thomas Jefferson