I have a 1989 crx si with a b16a swap. The car started overheating while at slow speeds and idle and then going back to normal after driving for a bit. I went ahead and changed the thermostat and now it has gotten worse. It overheats no matter what. Driving, idle, doesn't matter. The temp is pretty much maxing out as high as the needle will go so I really cant drive it.

Has anyone had this problem? Should I just replace the radiator or is it possibly something else. Thanks

 

do a radiator flush and when you put your new coolant in there add some redline water wetter... also make sure that your fan is kicking on
-Josh

 

If its overheating that bad I'm guessing you either are way low on coolant or your water pump is **** up.

 

make sure your fan is turning on... i know it sounds stupid, but mine didn't turn on, and there ended up being a short in the wire.