180 theromstat in 4.0?
 

My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too hot
for my comfort... I have heard that the 4 liter runs hot, is this hot
normal?

Can I put a 180 thermostat in without causing any harm? (Such as open-rich
loop because the computer never senses that the engine is warmed, running
too cold, ect)

I'd like to flush and fill the radiatior, block, and heater core. I haven't
done it on a Cherokee, but I have done it on my 84 Celica with the 22RE. How
difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?

Also, I loosened the resivor cap after shutting off the motor (fully
warmed), and there was a loud hissing noise, but I did not hear boiling. I
suspect this is not normal, or is it?

TIA for any help.

Carl

Re: 180 theromstat in 4.0?
 

210 is perfectly normal and the engine is supposed to run at that
temperature. It was designed to run that warm which helps it burn the fuel
more cleanly and with less smog output. If you attempted to make it run
cooler with a 180 degree thermostat, the engine would simply take longer to
warm up but it would still run at the 200 to 210 degree temperature. Plus
during that longer warmup, the computer would keep the engine running a
richer air-fuel mixture for longer than it should or is necessary. Use only
the factory specified 190-193 degree thermostat.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168d88a$1_1@newsfeed.slurp.net...
> My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too hot
> for my comfort... I have heard that the 4 liter runs hot, is this hot
> normal?
>
> Can I put a 180 thermostat in without causing any harm? (Such as open-rich
> loop because the computer never senses that the engine is warmed, running
> too cold, ect)
>
> I'd like to flush and fill the radiatior, block, and heater core. I
> haven't
> done it on a Cherokee, but I have done it on my 84 Celica with the 22RE.
> How
> difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
>
> Also, I loosened the resivor cap after shutting off the motor (fully
> warmed), and there was a loud hissing noise, but I did not hear boiling. I
> suspect this is not normal, or is it?
>
> TIA for any help.
>
> Carl
>
>

Re: 180 theromstat in 4.0?
 

210 is perfectly normal and the engine is supposed to run at that
temperature. It was designed to run that warm which helps it burn the fuel
more cleanly and with less smog output. If you attempted to make it run
cooler with a 180 degree thermostat, the engine would simply take longer to
warm up but it would still run at the 200 to 210 degree temperature. Plus
during that longer warmup, the computer would keep the engine running a
richer air-fuel mixture for longer than it should or is necessary. Use only
the factory specified 190-193 degree thermostat.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168d88a$1_1@newsfeed.slurp.net...
> My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too hot
> for my comfort... I have heard that the 4 liter runs hot, is this hot
> normal?
>
> Can I put a 180 thermostat in without causing any harm? (Such as open-rich
> loop because the computer never senses that the engine is warmed, running
> too cold, ect)
>
> I'd like to flush and fill the radiatior, block, and heater core. I
> haven't
> done it on a Cherokee, but I have done it on my 84 Celica with the 22RE.
> How
> difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
>
> Also, I loosened the resivor cap after shutting off the motor (fully
> warmed), and there was a loud hissing noise, but I did not hear boiling. I
> suspect this is not normal, or is it?
>
> TIA for any help.
>
> Carl
>
>

Re: 180 theromstat in 4.0?
 

210 is perfectly normal and the engine is supposed to run at that
temperature. It was designed to run that warm which helps it burn the fuel
more cleanly and with less smog output. If you attempted to make it run
cooler with a 180 degree thermostat, the engine would simply take longer to
warm up but it would still run at the 200 to 210 degree temperature. Plus
during that longer warmup, the computer would keep the engine running a
richer air-fuel mixture for longer than it should or is necessary. Use only
the factory specified 190-193 degree thermostat.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168d88a$1_1@newsfeed.slurp.net...
> My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too hot
> for my comfort... I have heard that the 4 liter runs hot, is this hot
> normal?
>
> Can I put a 180 thermostat in without causing any harm? (Such as open-rich
> loop because the computer never senses that the engine is warmed, running
> too cold, ect)
>
> I'd like to flush and fill the radiatior, block, and heater core. I
> haven't
> done it on a Cherokee, but I have done it on my 84 Celica with the 22RE.
> How
> difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
>
> Also, I loosened the resivor cap after shutting off the motor (fully
> warmed), and there was a loud hissing noise, but I did not hear boiling. I
> suspect this is not normal, or is it?
>
> TIA for any help.
>
> Carl
>
>

Re: 180 theromstat in 4.0?
 

Thanks, Jerry. I am just concerned that in the summer months and during long
mountain pass climbs, the engine temp will go TOO high. Should I be
concerned as long as I have good coolant?

Thanks,

Carl


"Jerry Bransford" <jerrypb@cox.net> wrote in message
news:7Z5ad.17026$_a3.11192@fed1read05...
> 210 is perfectly normal and the engine is supposed to run at that
> temperature. It was designed to run that warm which helps it burn the
fuel
> more cleanly and with less smog output. If you attempted to make it run
> cooler with a 180 degree thermostat, the engine would simply take longer
to
> warm up but it would still run at the 200 to 210 degree temperature. Plus
> during that longer warmup, the computer would keep the engine running a
> richer air-fuel mixture for longer than it should or is necessary. Use
only
> the factory specified 190-193 degree thermostat.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:4168d88a$1_1@newsfeed.slurp.net...
> > My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too
hot
> > for my comfort... I have heard that the 4 liter runs hot, is this hot
> > normal?
> >
> > Can I put a 180 thermostat in without causing any harm? (Such as
open-rich
> > loop because the computer never senses that the engine is warmed,
running
> > too cold, ect)
> >
> > I'd like to flush and fill the radiatior, block, and heater core. I
> > haven't
> > done it on a Cherokee, but I have done it on my 84 Celica with the 22RE.
> > How
> > difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
> >
> > Also, I loosened the resivor cap after shutting off the motor (fully
> > warmed), and there was a loud hissing noise, but I did not hear boiling.
I
> > suspect this is not normal, or is it?
> >
> > TIA for any help.
> >
> > Carl
> >
> >
>
>

Re: 180 theromstat in 4.0?
 

Thanks, Jerry. I am just concerned that in the summer months and during long
mountain pass climbs, the engine temp will go TOO high. Should I be
concerned as long as I have good coolant?

Thanks,

Carl


"Jerry Bransford" <jerrypb@cox.net> wrote in message
news:7Z5ad.17026$_a3.11192@fed1read05...
> 210 is perfectly normal and the engine is supposed to run at that
> temperature. It was designed to run that warm which helps it burn the
fuel
> more cleanly and with less smog output. If you attempted to make it run
> cooler with a 180 degree thermostat, the engine would simply take longer
to
> warm up but it would still run at the 200 to 210 degree temperature. Plus
> during that longer warmup, the computer would keep the engine running a
> richer air-fuel mixture for longer than it should or is necessary. Use
only
> the factory specified 190-193 degree thermostat.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:4168d88a$1_1@newsfeed.slurp.net...
> > My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too
hot
> > for my comfort... I have heard that the 4 liter runs hot, is this hot
> > normal?
> >
> > Can I put a 180 thermostat in without causing any harm? (Such as
open-rich
> > loop because the computer never senses that the engine is warmed,
running
> > too cold, ect)
> >
> > I'd like to flush and fill the radiatior, block, and heater core. I
> > haven't
> > done it on a Cherokee, but I have done it on my 84 Celica with the 22RE.
> > How
> > difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
> >
> > Also, I loosened the resivor cap after shutting off the motor (fully
> > warmed), and there was a loud hissing noise, but I did not hear boiling.
I
> > suspect this is not normal, or is it?
> >
> > TIA for any help.
> >
> > Carl
> >
> >
>
>

Re: 180 theromstat in 4.0?
 

Thanks, Jerry. I am just concerned that in the summer months and during long
mountain pass climbs, the engine temp will go TOO high. Should I be
concerned as long as I have good coolant?

Thanks,

Carl


"Jerry Bransford" <jerrypb@cox.net> wrote in message
news:7Z5ad.17026$_a3.11192@fed1read05...
> 210 is perfectly normal and the engine is supposed to run at that
> temperature. It was designed to run that warm which helps it burn the
fuel
> more cleanly and with less smog output. If you attempted to make it run
> cooler with a 180 degree thermostat, the engine would simply take longer
to
> warm up but it would still run at the 200 to 210 degree temperature. Plus
> during that longer warmup, the computer would keep the engine running a
> richer air-fuel mixture for longer than it should or is necessary. Use
only
> the factory specified 190-193 degree thermostat.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.cox.net/jerrypb/
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:4168d88a$1_1@newsfeed.slurp.net...
> > My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too
hot
> > for my comfort... I have heard that the 4 liter runs hot, is this hot
> > normal?
> >
> > Can I put a 180 thermostat in without causing any harm? (Such as
open-rich
> > loop because the computer never senses that the engine is warmed,
running
> > too cold, ect)
> >
> > I'd like to flush and fill the radiatior, block, and heater core. I
> > haven't
> > done it on a Cherokee, but I have done it on my 84 Celica with the 22RE.
> > How
> > difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
> >
> > Also, I loosened the resivor cap after shutting off the motor (fully
> > warmed), and there was a loud hissing noise, but I did not hear boiling.
I
> > suspect this is not normal, or is it?
> >
> > TIA for any help.
> >
> > Carl
> >
> >
>
>

Re: 180 theromstat in 4.0?
 

Yep, Normal both my TJ and my wife's YJ run 210.

HarryS

"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168ee92$1_3@newsfeed.slurp.net...
> Thanks, Jerry. I am just concerned that in the summer months and during
> long
> mountain pass climbs, the engine temp will go TOO high. Should I be
> concerned as long as I have good coolant?
>
> Thanks,
>
> Carl
>
>
> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:7Z5ad.17026$_a3.11192@fed1read05...
>> 210 is perfectly normal and the engine is supposed to run at that
>> temperature. It was designed to run that warm which helps it burn the
> fuel
>> more cleanly and with less smog output. If you attempted to make it run
>> cooler with a 180 degree thermostat, the engine would simply take longer
> to
>> warm up but it would still run at the 200 to 210 degree temperature.
>> Plus
>> during that longer warmup, the computer would keep the engine running a
>> richer air-fuel mixture for longer than it should or is necessary. Use
> only
>> the factory specified 190-193 degree thermostat.
>>
>> Jerry
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/
>> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
>> news:4168d88a$1_1@newsfeed.slurp.net...
>> > My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too
> hot
>> > for my comfort... I have heard that the 4 liter runs hot, is this hot
>> > normal?
>> >
>> > Can I put a 180 thermostat in without causing any harm? (Such as
> open-rich
>> > loop because the computer never senses that the engine is warmed,
> running
>> > too cold, ect)
>> >
>> > I'd like to flush and fill the radiatior, block, and heater core. I
>> > haven't
>> > done it on a Cherokee, but I have done it on my 84 Celica with the
>> > 22RE.
>> > How
>> > difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
>> >
>> > Also, I loosened the resivor cap after shutting off the motor (fully
>> > warmed), and there was a loud hissing noise, but I did not hear
>> > boiling.
> I
>> > suspect this is not normal, or is it?
>> >
>> > TIA for any help.
>> >
>> > Carl
>> >
>> >
>>
>>
>
>

Re: 180 theromstat in 4.0?
 

Yep, Normal both my TJ and my wife's YJ run 210.

HarryS

"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168ee92$1_3@newsfeed.slurp.net...
> Thanks, Jerry. I am just concerned that in the summer months and during
> long
> mountain pass climbs, the engine temp will go TOO high. Should I be
> concerned as long as I have good coolant?
>
> Thanks,
>
> Carl
>
>
> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:7Z5ad.17026$_a3.11192@fed1read05...
>> 210 is perfectly normal and the engine is supposed to run at that
>> temperature. It was designed to run that warm which helps it burn the
> fuel
>> more cleanly and with less smog output. If you attempted to make it run
>> cooler with a 180 degree thermostat, the engine would simply take longer
> to
>> warm up but it would still run at the 200 to 210 degree temperature.
>> Plus
>> during that longer warmup, the computer would keep the engine running a
>> richer air-fuel mixture for longer than it should or is necessary. Use
> only
>> the factory specified 190-193 degree thermostat.
>>
>> Jerry
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/
>> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
>> news:4168d88a$1_1@newsfeed.slurp.net...
>> > My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too
> hot
>> > for my comfort... I have heard that the 4 liter runs hot, is this hot
>> > normal?
>> >
>> > Can I put a 180 thermostat in without causing any harm? (Such as
> open-rich
>> > loop because the computer never senses that the engine is warmed,
> running
>> > too cold, ect)
>> >
>> > I'd like to flush and fill the radiatior, block, and heater core. I
>> > haven't
>> > done it on a Cherokee, but I have done it on my 84 Celica with the
>> > 22RE.
>> > How
>> > difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
>> >
>> > Also, I loosened the resivor cap after shutting off the motor (fully
>> > warmed), and there was a loud hissing noise, but I did not hear
>> > boiling.
> I
>> > suspect this is not normal, or is it?
>> >
>> > TIA for any help.
>> >
>> > Carl
>> >
>> >
>>
>>
>
>

Re: 180 theromstat in 4.0?
 

Yep, Normal both my TJ and my wife's YJ run 210.

HarryS

"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168ee92$1_3@newsfeed.slurp.net...
> Thanks, Jerry. I am just concerned that in the summer months and during
> long
> mountain pass climbs, the engine temp will go TOO high. Should I be
> concerned as long as I have good coolant?
>
> Thanks,
>
> Carl
>
>
> "Jerry Bransford" <jerrypb@cox.net> wrote in message
> news:7Z5ad.17026$_a3.11192@fed1read05...
>> 210 is perfectly normal and the engine is supposed to run at that
>> temperature. It was designed to run that warm which helps it burn the
> fuel
>> more cleanly and with less smog output. If you attempted to make it run
>> cooler with a 180 degree thermostat, the engine would simply take longer
> to
>> warm up but it would still run at the 200 to 210 degree temperature.
>> Plus
>> during that longer warmup, the computer would keep the engine running a
>> richer air-fuel mixture for longer than it should or is necessary. Use
> only
>> the factory specified 190-193 degree thermostat.
>>
>> Jerry
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/
>> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
>> news:4168d88a$1_1@newsfeed.slurp.net...
>> > My 89 Cherokee with the 4 liter runs at about 200 to 210, which is too
> hot
>> > for my comfort... I have heard that the 4 liter runs hot, is this hot
>> > normal?
>> >
>> > Can I put a 180 thermostat in without causing any harm? (Such as
> open-rich
>> > loop because the computer never senses that the engine is warmed,
> running
>> > too cold, ect)
>> >
>> > I'd like to flush and fill the radiatior, block, and heater core. I
>> > haven't
>> > done it on a Cherokee, but I have done it on my 84 Celica with the
>> > 22RE.
>> > How
>> > difficult is it on the 4 Liter Cherokee? Tips? Pitfalls?
>> >
>> > Also, I loosened the resivor cap after shutting off the motor (fully
>> > warmed), and there was a loud hissing noise, but I did not hear
>> > boiling.
> I
>> > suspect this is not normal, or is it?
>> >
>> > TIA for any help.
>> >
>> > Carl
>> >
>> >
>>
>>
>
>