i cant figure ouyt why my jeep is over heating. it has a new radiator, all new hoses, t stat, water pump, heater hoses, fans... and no it is not airlocked

 

Did you flush it with a garden hose?

Pull out the thermostat and flush it with a hose again.

Might be a cracked head/head gasket.

 

we did flush it, not a cracked head or gasket. it doesnt do it all the time. just after driving for 30-45 mins will it start to over heat

 

turn on the AC while its parked, make sure both fans are turning.

I assume you have good oil pressure.

How bad did the coolant look the first time you flushed?

 

Why would he want to turn the A/C on when its parked it will OVERHEAT faster now what would that solve?He would already know if the fans are working if its overheating motor driven turns when you start motor,electric fan will be on if its overheating give the guy a little credit to know something if he has flushed it already?

 

it wasnt to bad. both fans work. i think my t stat is opening and closing and getting stuck.

 

Thats a cheap and easy check grab a new one and gasket and try a swap if you want to know for sure through it in a pan of hot water to see if it opens first then pull her out and watch it close.

 

When u say "fans", what does that mean?

 

ive replaced my electric fan and the clutch fan....

 

i just changed it in july though

 

A/C condenser clear/clean, not plugged with mud/bugs/trash? Verified overheating with a gauge other than the factory dash gauge? New t-stats have been known to be bad, rarely. Like rich said, test it.

FWIW, here's pics of a 180 t-stat closed and wide open at 195.

 

i know its over heating because its boiling.

 

Replace the rad cap? A good 16psi cap and 50/50 mix coolant/antifreeze should give +/-260F boilover protection.

 

ill try that. its not quiet 50/50

 

Run the heat and then check your coolant temp and level. Use a code reader to get the temp from the ecu.