Re: 02 ranger 4x4 smells like crap when i turn heater on!
I had to remove the heater box and plenum to clean one out. I used a chlorinated cleaner internally. There are products that can be sprayed inside and sort of work. I tried but it didn't last. Yours might be different. Here's just one. 1Z Einszett Klima-Cleaner Air Conditioner Treatment
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