Thermostate Setting for Failing Squarrel Fan

[sfedeli3]

Hi Curt,

My thermostat is mounted in the ceiling of the engine compartment
just above the alternator on my 6V92. It is about the size of a small
bottle cap. I used it, in conjuction with a bosch relay, to power a
Hayden fan that cools the engine compartment. I used the largest fan
that I could find at Advanced Auto parts and mounted the fan behind
the grill that provides access to the curbside of the engine compartment.
Originally, I had set my fan to expel the hot air and work in
tandem with the large engine fan to pass air through the compartment.
Once parked, however, I have achieved better results by drawing cool,
outside air into the engine compartment, expelling it through the
radiator. I usually just reverse the wires on the fan, causing it to
run backwards. This would cool the compartment so fast, that the relay
would shut it off, so I also installed a SPDT switch to override the
thermostat and leave the fan on. I may eventually install at DPDT
switch to reverse the polarity without having to pull the wires off
the fan. This setup has worked fine for about 12K miles and the fan
does not seem to mind running in reverse.

Shane Fedeli
85PT40
Hershey, PA

--- In WanderlodgeForum@yahoogroups.com, "Curt Sprenger"
wrote:
>
> Several of us have recently posted about the ratteling or non working
> fan that is mounted in the upper rear area of the engine compartment.
> Does anyone know the thermostat degree setting for that fan? Anyone
> know where that thermostate is located?
>
> My thought at this time is to control the add-in Hayden fans to run
> off the same controls.
> --
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, CA
>