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The mkiv Supra Owners Club

A/c temp blowing out


jza800

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It does come down to the ambient temperature but on a normal day you should get down to 7C. 11C is too warm or run on a very hot day. Check your suction pressure and make sure its around 70psi static and 17psi running (again ambient variable). If the suction pressure falls to 10psi or below then your system is undercharged.

 

You can get gauges and snap on valves for the suction port from any good a/c wholesaler or via auction sites. You can even get big R134a cylinders to do your own top up as hoses are porous so any system should be checked and topped up if needed every 2 years. Its easy to do, just be aware you are working with refrigerant that can cause serious chill burns. I have 5 a/c vehicles which is why I do my own a/c maintenance and have the basic equipment.

Edited by rider (see edit history)
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i just had a A/C service on i, as i have been apart, and he put 700grams in it, so it should be charged probely if not a little more...

 

700g is the full recommended charge weight. Have a look at the condition of the condenser, if that is original the fins may have disintegrated to a powder which will give poor cooling efficiency.

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