Toyota Trucks: Why does my 4Runner heats up???

com (Ken Casler) wrote in message news:<google.com>... 

ken, we need more info about your truck. year? engine? if you have
the 22re (pre 1996 4cyl) then there's a simple explaination: the
thermostat in the 22re is in a stupid location, it's right after the
water return line from the heater core. this means that when it's
real cold out and you're using the heater at full power, the
thermostat sees only the cold water coming out of the heater core so
it thinks the engine is cold and says closed. it happens to me on
every cold day. i just put the fan to 1/2 power and the tempearature
goes back to normal. roger brown (www.4crawler.com) has a solution to
move the thermostat, but i'm not that smart and don't want to attempt
that.

mike

Hi Mike,

I have a V6 1995 4R 4WD... I took out the thermostat and filled the
rad with water but the engine became very hot and I could hear the
water bubbling and steam coming out of the radiator cap. What could
be the reason for it to get hot. I thought if the thermostat is
removed the engine should run cold and not hot.. Strange!!!!

Regards
ken

 

or frozen up from no antifreeze.
"Mike Deskevich" <com> wrote in message
news:google.com... 
news:<google.com>... 

Ken Casler wrote: 

Have a look at this page:
http://www.4crawler.com/4x4/CheapTricks/index.shtml#Thermostat

--
Roger

Gulshan Khan <com> wrote in message news:<com>... 

hmm, well i don't know if this is true with the toyota engines, but i
have seen MG's that run hot without the thermostat. if you take the
thermostat out, the water moves through too fast and doesn't get a
chance to exchange heat with the engine. may happen with the 3vze
too, but i don't know.

mike