as of right now my xj keeps over heating. what should i do to prevent this bullshit. i have some mods, simply bolt ons. for cooling i have jet thermo. 180*, brx hoses, engine cooler, trans. cooler, flex lite. dual electric fans, flow kooler water pump,use synthetic oils.
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STOP OVER HEATING!!
- Thread starter sWissfoo
- Start date
iluvmyjeep
NAXJA Forum User
- Location
- New Mexico
well, are you sure that your radiator isnt plugged up or damaged?
Im not sure about on autos but on dirt bikes engine ice works great.
Im not sure about on autos but on dirt bikes engine ice works great.
Blaine B.
NAXJA Forum User
- Location
- Northwest Indiana
x2 on radiator, make sure nothing is leaking as well, as a pressure loss will result in higher temps.
Rev Den
NAXJA Forum User
- Location
- Plainfield, IL
Check radiator.
Replace thermostat with the proper 190 unit
Re-install engine driven fan
Rev
Replace thermostat with the proper 190 unit
Re-install engine driven fan
Rev
Blaine B.
NAXJA Forum User
- Location
- Northwest Indiana
efans are awesome.
Although probably going to 195 degree is good, 180 shouldn't hurt. Plenty others run 180 without issues.
Sounds like he has another problem.
Although probably going to 195 degree is good, 180 shouldn't hurt. Plenty others run 180 without issues.
Sounds like he has another problem.
kdailey4315
NAXJA Forum User
- Location
- Pacifica, CA
When is it overheating? Idle? Freeway? All the time? That will/can determine what is wrong. You list some great mods but no mention of the radiator. What radiator are you running?
Arkansas91XJ
NAXJA Forum User
- Location
- Arkansas
Get a cooling system flush maybe?
IntrepidXJ
NAXJA Member #647
- Location
- Grand Junction, CO
sounds like you have replaced everything but the radiator. replace it.
that's what caused my 2000 to overheat this summer.....make sure to get an all metal one
that's what caused my 2000 to overheat this summer.....make sure to get an all metal one
- Location
- Bakersfield, CA
Nearly all overheating problems on XJ's are from a deficient radiator. Did it run cool with the electric fans, but now doesn't? Check the radiator.
my xj only has 75,000 on it, im running stock rad. at first everything worked great, but it ran hot even with 180* thermo., i switched thermo. to stock, it seemed to run better, but once i started to get stuck and i beat on it then it would over heat. i went over to the shop today and started it. now i hear this sound coming from the engine its constant but real low sound, i hope its not the engine if i can ill get a vid, ill post it.
thanks for the help
thanks for the help
Blaine B.
NAXJA Forum User
- Location
- Northwest Indiana
It's not the fans. You put the stock fan back?
corbinafly
"Mmmm. More please."
- Location
- lakewood,ca
There's your problem. The fans work better behind the radiator than they do on top of the motor like that.:laugh:sWissfoo said:my xj only has 75,000 on it, im running stock rad. at first everything worked great, but it ran hot even with 180* thermo., i switched thermo. to stock, it seemed to run better, but once i started to get stuck and i beat on it then it would over heat. i went over to the shop today and started it. now i hear this sound coming from the engine its constant but real low sound, i hope its not the engine if i can ill get a vid, ill post it.
thanks for the help
Sorry couldn't help it. If all else fails check the coolant for hydrocarbons.
Blaine B.
NAXJA Forum User
- Location
- Northwest Indiana
The only aftermarket sensor I've heard people having troubles with was the gauge sender at the back of the head.
However, his Jeep doesn't have that, as he has the all in one sensor on the thermostat housing alone. So I doubt that's his issue as well. Unless the sensor IS bad...but. Not likely.
However, his Jeep doesn't have that, as he has the all in one sensor on the thermostat housing alone. So I doubt that's his issue as well. Unless the sensor IS bad...but. Not likely.
Oatmeal
NAXJA Forum User
- Location
- Cedar City, UT
Overheating? Is it actually boiling over, is the temp guage going into the red (make sure you don't have a faulty sender). My '96 used to run hot (would creep into the red but, I never boiled it over) swapped out my 2 row for a 3 row CSF, new fan clutch, high flow 195 deg stat and B&M trans cooler. Now it stays cool even in summer stop and go with the A/C going (pulled the Baker grade (I-15) last summer in 110 deg heat with the A/C on, no problem------Hans
Blaine B.
NAXJA Forum User
- Location
- Northwest Indiana
Like I said there is only one sensor, which is on the thermostat housing.....no additional gauge sender.
The gauge on the thermostat housing for 97+ controls the efan, gauge, and tells the PCM the engine temp for fuel mixture.
The gauge on the thermostat housing for 97+ controls the efan, gauge, and tells the PCM the engine temp for fuel mixture.
ladywolf
UH-60L Jeep Chick
- Location
- Clarksville TN
after replacing all the hoses, fan clutch, and doing a flush, mine still overheated, ended up needing a new radiator. good as new
as of right now my guage cluster lights only work, for some reason when i turn over the engine nothing registers. so i cant tell how hot it gets, but when u see smoke comin from the hood and u see coolant goin everywhere its overheating. and yes it was boiling. every time that it overheated i shut it off. i hope it didnt do much damage. i started it today and the nosie was gone, so sweet one problem is gone. most of bolt ons didnt cost that much, only supension and drivetrain cost the most. does anyone know of any good raditors that will work for my 97 xj?
Go for a heavy duty Modine 2 row. The three rows dont work as well at low speeds due to the extra drag through the core when relying mainly on fan draw.
Also what total CFM do those fans pull?
Remember that a colder thermostat will NOT stop over heating. Once a thermostat is fully open, due to conditions, makes no difference at what temp it first did that. It will run better at 195 unless you mod the sensor for the ECU as well. You can do this by adding a 4000 ohm resistor between the CTS wires.
Also what total CFM do those fans pull?
Remember that a colder thermostat will NOT stop over heating. Once a thermostat is fully open, due to conditions, makes no difference at what temp it first did that. It will run better at 195 unless you mod the sensor for the ECU as well. You can do this by adding a 4000 ohm resistor between the CTS wires.
