i recently purchasesed a 2005 monte carlo ls w/110,000 miles,. overheating issues. thae car is fine at idle speed as i acclerate the car overheats
May be a head gasket, do a compression test to see if there are 2 low cylinders, and look for white smoke with a sweet smell coming out the tail pipe, check the engine oil to see if it is over full and looks like coolant in the oil. Otherwise may be a thermostat, or low coolant, and make sure the fans are working.
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