i have a 98' gt and it is leaking coolant from the thermostat housing. i replaced the O- ring and the thermostat isself and it still leaks. i put some gasket sealer on it and let it dry for 24hr.s and it still leaks. all you have to do is squeeze the upper radiator hose and you can see it slightly bubbling out. any suggestions? i dont see any sort of cracks or anything. thanks guys

 

are you sure the intake manifold isnt cracked??

 

i couldnt see any cracks. but thats the only other thing it could be. is that hard to replace?

 

I did mine in an hour at a shop. It's pretty easy.

 

how much are the aftermarket ones?

 

my brother-in-law had the same problem in his '97 gt, he took his car to a shop and they added more sealant to his manifold gasket cus of a leak, but in his case his water pump was the main cus of this. Once he replaced the water pump the car was leak free. Not sure about yours but maybe you might wanna check the water pump to be on the safe side.