radiator fluid boils but truck doesnt overheat
good morning - have a question and just need to know if its something to be concerned about-
i just noticed recently when i turn of my 2003 dodge durango 4.7 i hear the coolant making a boilng sound but the temperature gauge is not overheating, is this normal? since i've never noticed it before i was just wondering if this is the start of something going wrong with the thermostat or the radiator itself- the coolant is not filled to the top as i know overflow would happen if it was, but now hearing that boiling noise when i turn of the truck after only a 5-7 mile ride has me a little concerned- any suggestions? or is this normal- thanks for any help guys
i just noticed recently when i turn of my 2003 dodge durango 4.7 i hear the coolant making a boilng sound but the temperature gauge is not overheating, is this normal? since i've never noticed it before i was just wondering if this is the start of something going wrong with the thermostat or the radiator itself- the coolant is not filled to the top as i know overflow would happen if it was, but now hearing that boiling noise when i turn of the truck after only a 5-7 mile ride has me a little concerned- any suggestions? or is this normal- thanks for any help guys
Last edited by buffalocalzone; Jun 14, 2011 at 10:18 AM. Reason: make and model
No, it should not be boiling. Sounds like maybe your radiator cap is leaking / not holding pressure? You may want to consider replacing it to start with. Also make sure that your overflow reservoir has coolant in it as well.
Bob
Bob
thanks for the reply, i didnt think it was normal- its just strange that the temperature gauge nor the truck does not overheat, i should correct that its not really "boiling" but rather making a 'boiling sound" when turned off
That's what I figured the sound was. While it's normal for some noise (expansion / contraction of the liquid as it cools) it sounds to me that the cap is not holding pressure.
The other possibility is that you have air in the system which you get rid of by "burping" it (covered many times here, just do a search on it to get the methods) but that just opens up a whole new avenue to explore!
Start with the cap.
Bob
The other possibility is that you have air in the system which you get rid of by "burping" it (covered many times here, just do a search on it to get the methods) but that just opens up a whole new avenue to explore!
Start with the cap.
Bob
It also sounds like you may have an inproper mixture of coolant to water. I'd say try adding some more coolant (maybe quarter gallon) that way it is more coolant in the ratio if anything.







