Jerry Bransford

All you can do to help prevent overheating is having a good clean radiator
free of hard water deposits and a good fresh 50:50 mix of distilled or
deionized water (NOT PLAIN TAP which causes hard water deposits) and
coolant. Distilled and/or deionized water can be found in any grocery
store, distilled water is most commonly bought for use in irons. :)

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168ee92$1_3@newsfeed.slurp.net...
> Thanks, Jerry. I am just concerned that in the summer months and during
> long
> mountain pass climbs, the engine temp will go TOO high. Should I be
> concerned as long as I have good coolant?
>
> Thanks,
>
> Carl
>
>
> "Jerry Bransford" <jerrypb@***.net> wrote in message
> news:7Z5ad.17026$_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.***.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
>> >
>> >
>>
>>
>
>

Jerry Bransford

All you can do to help prevent overheating is having a good clean radiator
free of hard water deposits and a good fresh 50:50 mix of distilled or
deionized water (NOT PLAIN TAP which causes hard water deposits) and
coolant. Distilled and/or deionized water can be found in any grocery
store, distilled water is most commonly bought for use in irons. :)

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168ee92$1_3@newsfeed.slurp.net...
> Thanks, Jerry. I am just concerned that in the summer months and during
> long
> mountain pass climbs, the engine temp will go TOO high. Should I be
> concerned as long as I have good coolant?
>
> Thanks,
>
> Carl
>
>
> "Jerry Bransford" <jerrypb@***.net> wrote in message
> news:7Z5ad.17026$_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.***.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
>> >
>> >
>>
>>
>
>

Jerry Bransford

All you can do to help prevent overheating is having a good clean radiator
free of hard water deposits and a good fresh 50:50 mix of distilled or
deionized water (NOT PLAIN TAP which causes hard water deposits) and
coolant. Distilled and/or deionized water can be found in any grocery
store, distilled water is most commonly bought for use in irons. :)

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4168ee92$1_3@newsfeed.slurp.net...
> Thanks, Jerry. I am just concerned that in the summer months and during
> long
> mountain pass climbs, the engine temp will go TOO high. Should I be
> concerned as long as I have good coolant?
>
> Thanks,
>
> Carl
>
>
> "Jerry Bransford" <jerrypb@***.net> wrote in message
> news:7Z5ad.17026$_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.***.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
>> >
>> >
>>
>>
>
>

serg

my cousin has an 89 cherokee that had overheating problems. we changed
EVERYTHING on it. u name it, we probably changed it. he finally found a
guy in denver that told him that the cap and the coolant bottle are not made
by the same company. what ends up happening is that the cap does not match
the bottle perfectly. all they do at the shop was take a box of caps and a
box of bottles and try to match them up as best they could. they found a
good set and installed it. his car doesn't overheat now and he can finally
run the A/C!
ps. be careful with hot steam-it can carry a lot of energy and flash burn
your skin...

"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
>
>

serg

my cousin has an 89 cherokee that had overheating problems. we changed
EVERYTHING on it. u name it, we probably changed it. he finally found a
guy in denver that told him that the cap and the coolant bottle are not made
by the same company. what ends up happening is that the cap does not match
the bottle perfectly. all they do at the shop was take a box of caps and a
box of bottles and try to match them up as best they could. they found a
good set and installed it. his car doesn't overheat now and he can finally
run the A/C!
ps. be careful with hot steam-it can carry a lot of energy and flash burn
your skin...

"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
>
>

serg

my cousin has an 89 cherokee that had overheating problems. we changed
EVERYTHING on it. u name it, we probably changed it. he finally found a
guy in denver that told him that the cap and the coolant bottle are not made
by the same company. what ends up happening is that the cap does not match
the bottle perfectly. all they do at the shop was take a box of caps and a
box of bottles and try to match them up as best they could. they found a
good set and installed it. his car doesn't overheat now and he can finally
run the A/C!
ps. be careful with hot steam-it can carry a lot of energy and flash burn
your skin...

"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
>
>

Carl Saiyed

Thanks, Jerry and everyone else. I'll have the coolant changed. Is the
hissing sound normal? I'm concerned about too much pressure building in the
cooling system and/or a headgasket leak. Do these headgaskets usually hold
up well?

Thanks,

Carl


"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Iucad.17896$_a3.5123@fed1read05...
> All you can do to help prevent overheating is having a good clean radiator
> free of hard water deposits and a good fresh 50:50 mix of distilled or
> deionized water (NOT PLAIN TAP which causes hard water deposits) and
> coolant. Distilled and/or deionized water can be found in any grocery
> store, distilled water is most commonly bought for use in irons. :)
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:4168ee92$1_3@newsfeed.slurp.net...
> > Thanks, Jerry. I am just concerned that in the summer months and during
> > long
> > mountain pass climbs, the engine temp will go TOO high. Should I be
> > concerned as long as I have good coolant?
> >
> > Thanks,
> >
> > Carl
> >
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:7Z5ad.17026$_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.***.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
> >> >
> >> >
> >>
> >>
> >
> >
>
>

Carl Saiyed

Thanks, Jerry and everyone else. I'll have the coolant changed. Is the
hissing sound normal? I'm concerned about too much pressure building in the
cooling system and/or a headgasket leak. Do these headgaskets usually hold
up well?

Thanks,

Carl


"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Iucad.17896$_a3.5123@fed1read05...
> All you can do to help prevent overheating is having a good clean radiator
> free of hard water deposits and a good fresh 50:50 mix of distilled or
> deionized water (NOT PLAIN TAP which causes hard water deposits) and
> coolant. Distilled and/or deionized water can be found in any grocery
> store, distilled water is most commonly bought for use in irons. :)
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:4168ee92$1_3@newsfeed.slurp.net...
> > Thanks, Jerry. I am just concerned that in the summer months and during
> > long
> > mountain pass climbs, the engine temp will go TOO high. Should I be
> > concerned as long as I have good coolant?
> >
> > Thanks,
> >
> > Carl
> >
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:7Z5ad.17026$_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.***.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
> >> >
> >> >
> >>
> >>
> >
> >
>
>

Carl Saiyed

Thanks, Jerry and everyone else. I'll have the coolant changed. Is the
hissing sound normal? I'm concerned about too much pressure building in the
cooling system and/or a headgasket leak. Do these headgaskets usually hold
up well?

Thanks,

Carl


"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Iucad.17896$_a3.5123@fed1read05...
> All you can do to help prevent overheating is having a good clean radiator
> free of hard water deposits and a good fresh 50:50 mix of distilled or
> deionized water (NOT PLAIN TAP which causes hard water deposits) and
> coolant. Distilled and/or deionized water can be found in any grocery
> store, distilled water is most commonly bought for use in irons. :)
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:4168ee92$1_3@newsfeed.slurp.net...
> > Thanks, Jerry. I am just concerned that in the summer months and during
> > long
> > mountain pass climbs, the engine temp will go TOO high. Should I be
> > concerned as long as I have good coolant?
> >
> > Thanks,
> >
> > Carl
> >
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:7Z5ad.17026$_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.***.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
> >> >
> >> >
> >>
> >>
> >
> >
>
>

DougW

Carl Saiyed did pass the time by typing:
> Thanks, Jerry and everyone else. I'll have the coolant changed. Is the
> hissing sound normal? I'm concerned about too much pressure building in the
> cooling system and/or a headgasket leak. Do these headgaskets usually hold
> up well?

When an engine cools down it makes all sorts of hissing and burbley noises,
that's just the radiator cooling down and sucking from the overflow bottle.
The AC makes similar noises as well as it equalizes.

The radiator cap prevents too much pressure from building up. If it does the
cap will open and coolant flows into the overflow bottle. It's normal for
coolant to do this, that's why the bottle has a high/low mark.


--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!