Step 1.Determine how much car is worth
Step 2.If cost of repair,it can run into thousands of dollars sometimes,is more than/almost near the car 's worth,determine whether AC is worthwhile in Canada,where it's needed for less than 2 months per yr max.
Step 3.By all means try anything if you dont want to spend further money on car/or if you dont mind messing up your AC in the process.

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Tom 1992 300E 2.6