90tbird4.7l
Registered User
My 90 SC keeps sucking air in from somewhere and i cant seen to find out where. I would have to warm it til it forced 1/2 to 1 gallon of coolant into the overflow (doesnt even let the thermostat open), shut it off, drain the overflow, refill the system and it was good to go til it sat for 6 or more hours (Otherwise I would have to do it all over again, big hassle!). The other day I noticed it was leaking from the T-stat housing, so yesterday i installed a new T-stat (made sure it was sealed up this time). It keeps sucking air into the motor causing it to blow the antifreeze into the overflow, practically emptying the radiator. Everything it sealed and I cant figure out where the air is coming from. Radiator cap is new. Car is my daily driver, 117,000-ish miles runs and idles fine, no signs of a blown head gasket. Is it possible for the pump to cause this issue? I am not losing any coolant, just cant keep it in the motor. Please help, if i cant get it fixed soon i will be forced to get rid of the car, and with it being my only car, i am kinda screwed.