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Temperature question

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Old 06-23-2013, 09:21 PM
rambuddy137 rambuddy137 is offline
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Default Temperature question

I have a 2000 ram 1500 with a V-6. What temperature should I be running with AC on and a 90 degree F day. My temperature gauge appears to read warm, I would guess reads 240 degrees F. New thermostat is 2 years old. New water pump is 3 years old. Late last summer the radiator started leaking so I put in some stopleak. Is the radiator causing my overheating problem? I want to replace my radiator but I want to make sure my problem is fixed.
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Old 06-23-2013, 11:08 PM
alloro alloro is offline
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Quote:
Originally Posted by rambuddy137 View Post
240 degrees F
That's a bit too high for my comfort zone. It sounds to me like it's time for a new radiator.
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Old 06-23-2013, 11:51 PM
rambuddy137 rambuddy137 is offline
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that is what I was thinking. But I just want to be sure before I pick one up that the radiator is the problem. Could the fan clutch cause problems while driving at highway speeds.
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Old 06-24-2013, 12:06 AM
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blackvan blackvan is offline
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My 2000 with 5.2L runs between 190 - 200F with AC up all the way at highway speeds(75 -80mph) even here in south Texas at 115F ambient.

The fan and fan clutch only come into play when the vehicle isn't moving fast enough to force air through the radiator. Suspect the fan clutch if:

a: the output from your a/c becomes noticably warmer at stop lights
b: your engine overheats while stopped with engine idling

If it overheats while driving at speed that either indicates an obstruction in the cooling system or possibly water pump failure. I'd remove the thermostat and test it like that for a day. If it still overheats, open the radiator cap and check for water flow. If water isn't flowing, its the pump. If water seems to flow somewhat but its still overheating then the radiator is probably clogged with scale or rust. It is generally faster/easier to just replace it.

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Last edited by blackvan; 06-24-2013 at 12:41 AM..
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Old 06-24-2013, 12:13 AM
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funair02 funair02 is offline
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also you are cooking your transmission at temps over 220...

240 will kill your tranny - dead
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Old 06-25-2013, 05:44 PM
oleman oleman is offline
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First you need to determine what the temperature actually is.
The electronic gage system may not be accurate.
Check the rad temp [top rad hose] with an IR gage or some other known to be accurate. instrument before you add any parts.
BUT the last time I used stop-leak it stopped up flues in the radiator.
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Old 06-25-2013, 05:44 PM
 
 
 
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