[CREWZIN]

Welcome treyle.

I'm curious as to why you came here now when the cars already in the shop waiting to be torn down.

Anyway, found this in a search. It's not for a PT but the process is the same.........

Q: I can smell coolant inside my 1998 Neon when the defroster is on. The dealer pressure-tested the system and then ran some dye through it but couldn’t find a leak. What could be causing this problem?


A: The ominous sweet smell of coolant inside a car usually means that either the heater core or its hoses are leaking. As the ultraviolet-sensitive dye used to reveal leaks didn’t appear and you don’t mention a decline in coolant level, the leak probably is the diabolical kind that oozes enough coolant to be smelled but not enough to drip from the heater housing so it can be seen or felt. You may have to dig for this one by removing the heater core housing and anything else in the way.