overheating

[Nates]

car overheats. no codes no leaks except for when it gets hot after driving for about 10 min out of coolent recovery tank. replaced water pump thermastat coolent temp sencer. bleed it several times still no luck fans seem to work. air flaps work. any help would be appreciative.

 

[Ernie3647]

A bit vague Nates. What kind of car and what year.? What's the mileage?

 

[joegr]

And, does it overheat while driving (> 30 MPH), or only while idling? Was anything done to it just before this started?

 

[EdP]

car overheats. no codes no leaks except for when it gets hot after driving for about 10 min out of coolent recovery tank. replaced water pump thermastat coolent temp sencer. bleed it several times still no luck fans seem to work. air flaps work. any help would be appreciative.

Are you getting circulation? Radiator hot in all spots equally? Hose collapsing? Were they replaced?

 

[Nates]

at idle its fine .only gets hot when driving. the upper radiator hose is hot all the time, the lower hose comes and goes at idle. after i drive it and it get's hot the lower hose will be cold same with the radiator. only other thing i have replaced is oil sender.

 

[Nates]

2015 Genesis sedan 3.8l 117,000

 

[Kraig Wilkinson]

2015 Genesis sedan 3.8l 117,000

Sounds to me like the cooling system is air bound. IDK

 

[joegr]

Yeah, it sounds like there is not enough coolant circulation.
Air in the cooling system. (leaks?, bad head gasket?, warped block or head?, not filled and bled properly?)
Thermostat not opening enough (bad thermostat?)
Water pump not pumping well (damaged impeller?)
Clogged radiator (see below)
Bad coolant (percentage of anti-freeze too high?, leak stop crap?, other contaminate?)

 

[Nates]

only thing i havent replaced is radiator. dont belive in stopleak. too much antifreeze wheel make it overheat.

 

[Kraig Wilkinson]

only thing i havent replaced is radiator. dont belive in stopleak. too much antifreeze wheel make it overheat.

Does the system have a bleed valve/bolt/screw?

______________________________

Help support this site so it can continue supporting you!

 

[joegr]

...too much antifreeze wheel make it overheat.

Yes, it can, but the odds that this is your problem are pretty low. Anti-freeze transfers less heat than plain water does. It is usually recommended that the ratio water to antifreeze be about 50%, as this is a good compromise between heat transfer capacity and freeze/boil-over protection (as well as anti-corrosion and pump lubrication). There is also general advice to never go over 75% anti-freeze (or under 25%).

Did your overheating start after replacing the radiator?

 

[G-249239]

only thing i havent replaced is radiator. dont belive in stopleak. too much antifreeze wheel make it overheat.

Did you ever find a solution ?