Mix a little bleach with some water in a spray bottle. Turn you AC on max and spray the mixture in the vents at the base of the windshield. That will kill the mold. For now on turn you ac off a a little before you shut it down, but leave the fan on to dry everything out. It doesn't work perfectly my wifes Tahoe still starts to smell at times and I have to hit it with the bleach again.
Turn off your AC 5-10 minutes before you arrive at your destination, keeping the fan off to dry the condensed moisture.
If you use a bleach/water solution, or a store bought item, kill any mold/bacteria that might be growing, and combine that with the above method, you shouldn't have any issues.
I went to autozone last summer and bought a spray that kill the mold and fungus that can collect in there. They kept it on the same rack as the a/c recharge section.
Turn off your AC 5-10 minutes before you arrive at your destination, keeping the fan off to dry the condensed moisture.
After I used the spray I did that every day, When I got to a certain traffic light on my way home, I would turn off the A/C and let the windows down. Seemed to work as there was less condensation puddle on the ground. The spray kept the truck smelling nice all summer, almost the same as Fabreeze (sp).
You can use the mold/mildew arrestors/inhibitors to get rid of what's existing now, but the most effective and more permanent solution is to be sure the condensor drain isn't blocked and that it drains properly. If you have a humid climate, the A/C should "weep" considerably from the passenger side. If it doesn't, check the drain.
No moisture should remain in or on the condensor core or in the drain pan after the A/C is shut down. One more point - if the condensor core ices or frosts up and the melting contributes to your moisture problem, the gas charge isn't correct and needs checking.
You can use the mold/mildew arrestors/inhibitors to get rid of what's existing now, but the most effective and more permanent solution is to be sure the evaporator drain isn't blocked and that it drains properly. If you have a humid climate, the A/C should "weep" considerably from the passenger side. If it doesn't, check the drain.
No moisture should remain in or on the evaporator core or in the drain pan after the A/C is shut down. One more point - if the evaporator core ices or frosts up and the melting contributes to your moisture problem, the gas charge isn't correct and needs checking.
Use this and follow the instructions, along with what the others said about turning the AC off and leave the fan on and you wont have the smell anymore.
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