Question about 2000 Hyundai Elantra

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My car was overheating and antifreeze was leaking from underneath and my waterpump was cracked so i got it replaced, but still it keeps overheating so i leave the a.c. on and that works until i start to slow down and it overheats again, but when i accelerate the temp goes down and when i step off it heats back up, checked the antifreeze and it was cool, so was the radiator, what is it making it overheat??

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Most likey if you changed the thermostate and gasket and antifrezze and water your fan clutch has gone bad an needs to be replaced the clutch works on a friction device the hotter it gets the more the friction plates ingauges causeing the clutch to turn much faster thush cooling the engine. Without this cooling action this will destroy the engine and trans misssionsdm without this cooling so this is true to this date the cooling in fan fan has to work to be able to keep engine cool. now days they call it a puke tank to keep from burning up the engines and is designed so that hot water is pushed out of the tank into the overflow tank so that when it gets hot there us bo waiting for the fluid to be sucked intothe radiator it's done automatically and saves the engines. So small changes have stuck with us and saved the lives of people in the miliatry and in the non milataray systems..

Posted on Oct 05, 2009

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Try replacing the thermostat! if your radiator isn't getting hot, then the water isn't circulating! could be failed, or plugged when they replaced water pump! perhaps some crud got released into cooling system!
good luck! if you're mechanically inclined, you can prob. replace it yourself. engine off and cool!! make sure to replace it with a thermostat with the right opening temperature! (180-195 degrees)- varies from vehicle model to engine HP. rating should be stamped on the thermostat that's in your vehicle. get the same type!

Posted on Oct 05, 2009

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