Just to reiterate, a cooler thermostat does not help control overheating.
Only a properly working system will cool correctly.
KH


"Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
news:4169c52e$1_4@newsfeed.slurp.net...
> Thanks guys. I just bought the Jeep, the PO said it was maintained well,
> but
> I am going to get the coolant changed anyway. I'll run a compression test
> when I do the tune up, and I'll have them run a coolant pressure test.
>
> Thanks,
>
> Carl
>
> "LW------3rd" <--------------------> wrote in message
> news:20041010173445.28660.00000555@mb-m05.aol.com...
>> Hi Carl,
>> If your worried about a head gasket, take to any radiator shop, it's
>> easily tested for. If you change your coolant by every two years, the
>> acid
> will
>> never be strong enough to eat through the gaskets and freeze plugs, and
>> if
> you
>> didn't accidentally run it to far on a blown hose or belt, and over heat,
> and
>> warp the head/block, chances are you'll be OK.
>> God Bless America, ßill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>
>

 

Going to a 3 core radiator did the trick for me!

"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
>
>

 

Going to a 3 core radiator did the trick for me!

"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
>
>

 

Going to a 3 core radiator did the trick for me!

"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
>
>

 

3-core radiators don't always help the engine to run cooler, especially if
you tend to do a lot of low speed rock crawling. The increased depth of a 3
core over a 2 core restricts air flow through/past the channels and in low
air flow situations, can make the difference in overheating or not
overheating. I will stick with 2 core radiators for my rock crawling Jeep.
:)

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mike92105" <mike92105@***.net> wrote in message
news:dnUad.44107$R43.36226@fed1read01...
> Going to a 3 core radiator did the trick for me!
>
> "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
>>
>>
>
>

 

3-core radiators don't always help the engine to run cooler, especially if
you tend to do a lot of low speed rock crawling. The increased depth of a 3
core over a 2 core restricts air flow through/past the channels and in low
air flow situations, can make the difference in overheating or not
overheating. I will stick with 2 core radiators for my rock crawling Jeep.
:)

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mike92105" <mike92105@***.net> wrote in message
news:dnUad.44107$R43.36226@fed1read01...
> Going to a 3 core radiator did the trick for me!
>
> "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
>>
>>
>
>

 

3-core radiators don't always help the engine to run cooler, especially if
you tend to do a lot of low speed rock crawling. The increased depth of a 3
core over a 2 core restricts air flow through/past the channels and in low
air flow situations, can make the difference in overheating or not
overheating. I will stick with 2 core radiators for my rock crawling Jeep.
:)

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mike92105" <mike92105@***.net> wrote in message
news:dnUad.44107$R43.36226@fed1read01...
> Going to a 3 core radiator did the trick for me!
>
> "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
>>
>>
>
>