The heater core is the only inside the box capable of omitting a antifreeze smell and steam the condensor will have water draining but not antifreeze.
Here is the facts, your heater core is leaking.
Now if it is leaking because of removeing and recrimping the tubes, possibly.
I can, t see the part you are talking about, but I have replaced many many heater cores in many diff vehicles. But have never had to crimp anything.
Yes you will have to dissassemble again, and quite possible that this core will be damaged.
Sorry but it is what it is. Billymac
Tuesday, August 18th, 2009 AT 12:09 PM