Why wouldn't it make sense then to let the vehicle idle for say a minute or
2 before putting it under that load and then run it up that hill...would it
not heat up fast enough?

Dave

On 9/8/06, Geza Polony <gezapolony@sbcglobal.net> wrote:
>
> Yes, four wire is better. I've already grounded my one-wire sensor using a
> radiator hose clamp and a length of wire for exactly the reason you
> mention.
>
> But the question remains, what do you use for the 12 volt source? It would
> have to be something switched on by the ignition key, duh, but what? The
> coil?   Anybody know the connection point on later (3 or 4-wire) models?
>
> I still say that if you could reprogram the ECU to cut down the open loop
> time, or toggle it on or off, you'd save gas. Probably a lot. If you
> happen
> to be going up a hill in the first minute or so of warm start, open loop
> running, you're probably getting five miles per gallon. Leaning the
> mixture
> might give you ten. Who knows.
>

--
Dave - KC9FYM
http://fjazzbass.blogspot.com