cooling system help
#1
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Year: 1990
Model: Cherokee
Engine: 4.0
cooling system help
I've searched in here but haven't really found the awnser. I have a 1990 4.0 with auto the previous owner out a open cooling system in it and it keeps getting air in the.lines in turn overheating. My question is what can I do to did it. All parts are under year old. Need to get it fixed with high school student budget and quick as it is my dd any help would be great
#6
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
How do u know air in the lines is causing overheating? How old is the cooling system? What maintenance has been done? The bottle must fill from the bottom and must always have some coolat in it especially when the motor is cold. The bottle must be vented, no pressure build up in the bottle. Radiator cap must function correctly, it is a 2 way valve.
Last edited by djb383; 10-27-2012 at 09:25 PM.
#7
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Year: 1993
Model: Cherokee
Engine: 4.0 HO
my old jeep (1990 closed system) had the slighest seep on lower rad hose, block attachment, never noticed it, looked like oil if anything
finally found it after hearing air gurgling one day, then found I was low over 1 gallon of coolant
get on your back with flashlight & look for leaks
may try pulling temp sensor out to burp it .. drivers side, rear end of block .. i think
.. renix pro's should comment on that 1 .. I never did it, got lucky with a shop fix
finally found it after hearing air gurgling one day, then found I was low over 1 gallon of coolant
get on your back with flashlight & look for leaks
may try pulling temp sensor out to burp it .. drivers side, rear end of block .. i think
.. renix pro's should comment on that 1 .. I never did it, got lucky with a shop fix
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#8
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Year: 1990
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Engine: 4.0
Radiator cap works and the bottle doesn't but with the newer cooling system the previous owner installed everything and just threw it in so I don't understand a lot of it
#9
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Year: 1990
Model: Cherokee
Engine: 4.0
As I said mine is a 1990 but last owner had a 92+ system put in and I don't really mess with the cooling system
#10
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Year: 1993
Model: Cherokee
Engine: 4.0 HO
franken - cooler?
maybe just an open rad on sealed system ? .. I almost tried that .. someone else should comment
you have pics ?
maybe just an open rad on sealed system ? .. I almost tried that .. someone else should comment
you have pics ?
#12
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Year: 1993
Model: Cherokee
Engine: 4.0 HO
from what ive read / thought about doing .. the conversion needs to be done complete (sealed to open)
I got lucky with my sealed, so never went there
now I have a 93 w/ open system, way different tubes / routing, etc..
on my 90 / closed .. tryin to get heat to work .. I broke heater valve in 1/2 .. I mcgyvered it w/ hacksaw ... to get to work .. then problems started & would not go away, especially air in system .. thought I had a bad head gasket
finally got everything replaced / routed correctly / flushed .. worked fine since
I got lucky with my sealed, so never went there
now I have a 93 w/ open system, way different tubes / routing, etc..
on my 90 / closed .. tryin to get heat to work .. I broke heater valve in 1/2 .. I mcgyvered it w/ hacksaw ... to get to work .. then problems started & would not go away, especially air in system .. thought I had a bad head gasket
finally got everything replaced / routed correctly / flushed .. worked fine since
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Year: 1993
Model: Cherokee
Engine: 4.0 HO
wheres this plastic bottle ? motor area, passenger side up near dash ? held down by a rubber strap ?
or somewhere else ?
or somewhere else ?