I bought a 1994 ford F-350 that was a Navy truck. The problem is that
I can only get between 10 and 13 MPG (no load).
The truck is in good condition, but it doesn't seem to want to "warm
up". I think the Navy people took the thermostat out. So, that would
make it run rich and kill my MPG, right? I'm in the process of tuning
the truck up, so I will see if the MPG goes up, but the temp gauge
never gets above 1/3.
I also have a Navy Dodge Van that seems to never "warm" up also, both
the Van and the Truck do not pump out really "hot" heat, all of this
points to no thermostat. As soon as it warms up I'll get out there to
check, a follow up question is what temp thermostat should I use in
the F350 ?
Thanks for the reply.
I've done even more research and I found that the temp gauge sitting
around 1/3 could be normal. What does make me think there is no
thermostat is the fact that it takes a long time for there to be heat
and the heat isn't that hot. Could this be normal?
How hard is it to change the thermostat?
And yes it is a gas engine.
On 17 Mar 2007 07:44:57 -0700, firstname.lastname@example.org
With that vintage, the guage will go somewhere around the
"O" with a 197 deg stat. If you replace the stat, it will
go a bit higher on the first few warmup cycles, but will
settle in where it was in most case I've seen. If it has
the HD cooling which is spec'd on almost every gov't
vehicle, it has a higher capacity cooling system requiring a
bit longer to get fully warmed up. Unlike the older cooling
systems, these have a bypass directly to the radiator
instead of internal recirculation like many older systems.
This tends to slow warmup along with a couple of benefits
like de-aereating the coolant and warming the throttle body
to prevent icing. If a slow heater is the problem, it may
need a good flushing to clean a partially blocked heater
core. They can be a bit sentitive to scum and scaling.
And what exactly is wrong with Navy vehicles? You got on the wrong boat here
mister. I am a Navy VET... They dont do anything to their engines that you
wouldnt do to yours. They have factory trained techs working on these
trucks, just like the dealers..
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