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Check radiator hose, leaking water pump, look for hole in radiator, leaking coolant bottle or leaking seals.
Thermostat and radiator
Really need to know the year and engine size. But you can check this, Does your engine have 2 lines just above the oil filter that run up the side of the engine and goes into the radiator on the drivers side ? If so then that is the engine oil cooler lines and the tubes in the radiator were the oil flows through to cool the oil are probley leaking into the radiator coolant. IT happens often. WILL NEED TO REPLACE RADIATOR. And flush out the cooling system real GOOD. Did your engine freeze from lack of antifreeze ? If the radiator fluid is cheery red looking then the transmission cooler that is built into the radiator is leaking. REPLACE RADIATOR. GOOD LUCK.
You can pressure test it to check for leaks, if it was leaking the oil would be milky anyway. You can check the temperature(laser temp gun)in to and out of the cooler to see the efficiency.
Check the radiator hoses. The coolant is either leaking out of the new radiator, or it is coming from a radiator hose. The water pump may be leaking. Hose clamps may be loose.
check your radiator hoses and change gaskets
Check the EGR cooler.
If your truck is overheating!!! Then check the upper radiator and lower radiator hose's , if the lower is cooler the the upper the either the thermostat is not opening or the radiator is clogged
Need to check the oil cooler lines, there are 2 of them that are hooked to the oil filter adapter just above the oil filter and they run up the side of the engine and go into the radiator. Driverside. They are probley leaking.
Check your transmission fluid, The cooler that runs through the radiator may be leaking into the cooling system. If so, the radiator will need to be replaced, and possible transmission will need to be flushed as well. Good Luck!
Hey Bon==No, the bubles can be from a leaking head gasket. Have someone with a tester to check the radiator for gasses. goodluckJoe
i would check the vacuum hose that goes to the vacuum modulator on the transmission the vacuum modulator probably has a hole in it and the fluid is going into the engine and being burned or check your coolant the radiator may have a hole in the transmission cooler inside the radiator so check your coolant and the vacuum hose for trans fluid good luck