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Radiator question!

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Old Jul 20, 2012 | 05:17 AM
  #1  
Jesse Jone's Avatar
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Default Radiator question!

Less than a month my radiator started to leak! I had no choice but to replace it..
I got made in taiwan one! But i've noticed the heat is higher since i replaced it than the heat when i had the old one!
Could this happen from the radiator its self! Should i change it? Pick an original one from the junk yard? Or buy a new one? The new one is expensive though..
Plz help..
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Old Jul 20, 2012 | 06:13 AM
  #2  
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air in the system,? fan clutch,? elec fan working? fan shroud in place? thermostat ok? waterpump?
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Old Jul 20, 2012 | 06:59 AM
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Please explain in more detail what you mean by "heat is higher".

I'm assuming you mean that the coolant temp shown on the gauge on the dash reads higher? What was it reading before and after the radiator swap?
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Old Jul 20, 2012 | 08:49 AM
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What if was some air in the system? And fan shroud in place, efan works good, waterpump ok i guess because it didnt heat before the radiator swap! T-stat i've eliminated it long time ago! Since 5 years! Cuz of heat here in kuwait everybody take it out in summer n put it back in winter! So i cant count t-stat..


And for the temp before n after the swap, before the swap it never reached 210 while at stop! Max 190! And while driving it goes down to 160!
Now while driving it goes up to 210 in the evening, & in the noon it hits 220! While driving! I've never reached such temp while driving! Even at worst weathers!
So plz help! Is it because of the radiator made in taiwan?
Thanks in advance..
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Old Jul 20, 2012 | 09:25 AM
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Originally Posted by Jesse Jone

And for the temp before n after the swap, before the swap it never reached 210 while at stop! Max 190! And while driving it goes down to 160!
Now while driving it goes up to 210 in the evening, & in the noon it hits 220! While driving! I've never reached such temp while driving! Even at worst weathers!
So plz help! Is it because of the radiator made in taiwan?
Thanks in advance..
That's actually operating temperature of your jeep. 210 is normal and the electric fan kicks in at 218. I'm not sure what was going on with your temps of 160 before. My guess is it was a false reading.
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Old Jul 20, 2012 | 10:02 AM
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Originally Posted by Muaddib420
That's actually operating temperature of your jeep. 210 is normal and the electric fan kicks in at 218. I'm not sure what was going on with your temps of 160 before. My guess is it was a false reading.



but I am running without t-stat! So its normal to have 160 while driving! It wasnt false reading!
And for 220 is normal while driving no! Its not..
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Old Jul 20, 2012 | 10:28 AM
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Originally Posted by Muaddib420
That's actually operating temperature of your jeep. 210 is normal and the electric fan kicks in at 218. I'm not sure what was going on with your temps of 160 before. My guess is it was a false reading.
Sorry, 210 is not normal.
I just put all new parts cooling system in my XJ along with a 195 Tstat and my temps in 98deg weather are 195-202.
Mine used to run 210-220 when I first bought it.
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Old Jul 20, 2012 | 11:48 AM
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Originally Posted by Jesse Jone

but I am running without t-stat! So its normal to have 160 while driving! It wasnt false reading!
And for 220 is normal while driving no! Its not..
Why are running without a thermostat? If cars were meant to run without one they wouldn't have put one in there.

I get 210 and most other people around here if you look around get between 200 and 210. It's normal.
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Old Jul 20, 2012 | 11:54 AM
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Originally Posted by Jesse Jone
but I am running without t-stat! So its normal to have 160 while driving! It wasnt false reading!
And for 220 is normal while driving no! Its not..
If you have air in the system it will get hotter than it should, possibly overheating. Fear of overheating is the source of your concern, yes?

Troubleshooting and diagnosis this without any presumptions.
The point is there is a problem now which needs to be resolved. And the prior condition, while helpful to acknowledge, is no indicator that other parts are not in need of repair or replacement.
Why did the radiator leak in the first place. Was it punctured by a foreign object? Did it fail due to corrosion? What did the coolant look like?
Was there rust in the coolant? Has the entire system been flushed, purged of air and pressure tested?
I suspect air in the system. Sometimes it takes a few tries at burping it to get all the air out. Pressure test will confirm the integrity of the system.
And do not rule out the water pump just because you had no prob before replacing the radiator. New parts can put new strains on old parts that were already weakened by the previous condition.
As you systematically test the cooling system the cause will be found. Frustrating as it may be, diagnosis must be carefully performed to find the resolution.

BTW. Just curious, have you tried turning on the heater with it set on high fan and high temp to see if running the coolant through the heater core drops the temp any?
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Old Jul 20, 2012 | 11:58 AM
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New fan clutch?????
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Old Jul 20, 2012 | 01:58 PM
  #11  
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Originally Posted by tgordon
If you have air in the system it will get hotter than it should, possibly overheating. Fear of overheating is the source of your concern, yes?

Troubleshooting and diagnosis this without any presumptions.
The point is there is a problem now which needs to be resolved. And the prior condition, while helpful to acknowledge, is no indicator that other parts are not in need of repair or replacement.
Why did the radiator leak in the first place. Was it punctured by a foreign object? Did it fail due to corrosion? What did the coolant look like?
Was there rust in the coolant? Has the entire system been flushed, purged of air and pressure tested?
I suspect air in the system. Sometimes it takes a few tries at burping it to get all the air out. Pressure test will confirm the integrity of the system.
And do not rule out the water pump just because you had no prob before replacing the radiator. New parts can put new strains on old parts that were already weakened by the previous condition.
As you systematically test the cooling system the cause will be found. Frustrating as it may be, diagnosis must be carefully performed to find the resolution.

BTW. Just curious, have you tried turning on the heater with it set on high fan and high temp to see if running the coolant through the heater core drops the temp any?


yes my main concern is overheating! Now i can't even drive it to far places because of the fear it overheates..
The previous radiator i guess wether it was rusted from OUTSIDE or it was hit by a foregin object..
And before it leaked in short so short time i flushed it and put a new coolant and welded the fan on the clutch! So the clutch was working directly when the engine turns on! I got great low heat for a while! I loved the car! The it leaked, i had to change it, and i used it for couple of days and although it was leakin it didnt heat! The coolant was green! Then i bought the new one n put it back! And while test driving it, i noticed the gauge reads higher! Although in my way to the shop to buy the new one, it was reading 160! It was awesome! Now its so bad!

And about the heater i canceled it! Because we dont use it at all! Only A/C cuz its too hot for a heater to use! Even when the a/c is on its the same heat..
I will see about the air thing n see if it gets better..
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Old Jul 20, 2012 | 02:17 PM
  #12  
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I also forgot to mention that after i drive it and park it back home and the heat reaches 210 i open up the hood to let it cool down alittle i press the hose, it is so hard! I cant squeeze it at all! This didnt happen before even if it reached 210!
Could this really be air in the system!
And once the water boiled out of the bottle! I dont know why!
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Old Jul 20, 2012 | 03:42 PM
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You might want to have it checked for a blown head gasket. There is a simple test that can be done at most professional mechanics, it measures for exhaust gases in the coolant. Sometimes when a head gasket goes exhaust gases can escape into the coolant, and this can increase pressure in the system. One quick check would be- with the engine cool, open the radiator cap, then put it back on. Start the engine and let it run for about 30 seconds, turn it off. Now remove the radiator cap again. If you hear a quick gasp of air come out there's a good chance the head gasket is bad or you have a cracked head.
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