Heater Core Leaking

ford
mustang

#1

I have a 89 ford mustang with 4 cylinder. After being stored for the winter I noticed anti-freeze leaking from drain tube below heater core (small amount).



I am not looking forward to replacing the heater core in this car!



Does anyone know if there is a reason this happened after the car sitting in storage all winter??? or just a coincidence??


#2

Before commenting on cause I ask that you confirm your diagnosis with a cooling system pressure check. My policy is to look at all conclusions the public has come to concerning their cars with a "show me’ attitude. Better men than you and me have made an incorrect diagnosis.


#3

good point.


#4

Do you always store it for the winter? You can bypass the heater core if you don’t need the heater.


#5

If the core is really leaking then I’d say that it’s because of 23 years of age and it’s had a good lifespan. Rot happens.


#6

Perhaps because the car sits in storage for 6 months a year and the antifreeze just settles in the core and thus finally rotted it out???


#7

What was the coldest temperature the car was exposed to? What temp is your anti-freeze good for? Maybe it froze and expanded.


#8

I will check the antifreeze concentration but I don’t think that is it. The car was in a somewhat heated garage all winter and there were no other leaks due to frezing, but I will check the concentration level of the a/f