doesnt cool properly
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2000 Toyota Sienna Question: will a dirty air filter affect the ac?
Answer #1Brian Glastetter June 01, 2011, 19:34Master
No, a dirty air filter will not cause the A/C system to operate inefficently. Pressure readings will have to be performed to determine if the root cause of the A/C system issue. I suspect it may be low on refrigerant from a small leak.
Answer #2patrick mannion from Greg Solow's Engine Room, June 01, 2011, 22:35Master
A restricted "Cabin Air Filter/Pollen Filter" would definitely affect the ventilation inside the passenger compartment if that's what you had been told or heard but the 2000 Sienna does not have provision for a cabin air filter.