Civic EG

at iddle the car heats up but when i drive it goes away. idk if its the thermastat or water pump. also i cant hear the fan turn on like i use to.

Thermostat would be the quickest fix if thats the problem. Test yours in a pot of boiling water and go from there.

so you mean pour boiling hot water down my radiator?

He means take your T-stat out and put it in a pot of water on a stove with a thermometer in it. If your T-stat begins to open at 170degrees and is fully open by 190degrees, it's working properly.

IMO, that's more trouble than it's worth. Just replace your thermostat first, then if it still overheats, replace your radiator cap, and flush your cooling system. If it still overheats, replace your waterpump. Might as well replace the timing belt while you're in there. You'll regret it in the long run if you don't.

so it gets warm then you drive and it goes cold but does it ever go back to being warm after driving awhile???? If it shows cold all the time (when your driving) then maybe the gauge is broken??????????

sounds like water pump...

i dont think the gauge is broken but i have off on friday so ill check it then... ill keep you guys posted thanks.

intheworks wrote:so it gets warm then you drive and it goes cold but does it ever go back to being warm after driving awhile???? If it shows cold all the time (when your driving) then maybe the gauge is broken??????????

Do you warm your car up or do you just turn it on and it rises??

when i turn the car on its fine... but when im sitting at a light it gets hot... then when i start driving it goes away.........

ohhh ok mine did this and it was my coolant level being real low and air in the system.

ohhh ok mine did this and it was my coolant level being real low and air in the system.

I had the same thing, a leaking head gasket was allowing air from the cylinder into the coolant passage.

have you checked the fan yet?

also moving this to ENGINE - GENERAL since it is about your engine and not the coupe chassis

thanks buddy for moving it i saw it at last moment and didnt know how to move it... but i think it might be the fan cus i dont hear it turn on like i use to... it might be a fuse or relay but idk

where the bottom radiator hose goes into the engine there should be a plug, that sensor is for the fan. i had to replace mine last summer

i changed out the fuse and relay and it works fine now... but if anything happends ill let you know..