Automotive Air Conditioning — FAQs and Technical Information
Tech Tips
Magic for A/C problems
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Articles in this category (7)
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Beware the Small Evaporator
With more and more imported products flooding our country, now, more than ever, you should pay close attention when selecting and replacing evaporator cores. Sadly, many of the…
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Location and Replacement of Cabin Air Filters
Question: We have reduced airflow in some blower modes in our 2001 Saturn LS. We have been told this is the result of a clogged cabin air filter. I have…
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Refrigerant Capacites for Cars and Light Trucks
Question: Where can I find automotive refrigerant capacities listed online? Here are a few online sources I think everyone will find useful. NAPA has capacities in PDF format... NAPA Temperature Control Products…
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Use the Correct Switch Port O-Ring
Here's a simple tip for anyone who's ever installed an accumulator.Under that cycling clutch switch sits a little O-ring. You figure the O-ring that comes with that new…
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What Oil to use on O-rings?
When replacing A/C system O-rings, it's always recommended to lubricate all O-rings with clean 525 viscosity mineral oil. Oil on the O-ring surface helps protect the O-ring during the assembly of fittings. The…
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Which Oil to Use with R-134a?
Question: With so many oils available, which one should I use? Is there a good universal oil? You should use the oil that matches the recommendation by the…
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Will I Gain by Wrapping my Lines and Hoses in Foam?
Many people think that you can improve performance by insulating cold refrigerant lines from engine heat. Some design engineers may even use insulation for this purpose.Hose insulation is…