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Update for those bored or interested
Just had the whole system properly drained and refilled to factory specs. Turns out I was low .6lbs
Of the 1.8 needed.
unfortunately this did not fix the issue. What would be the next logical thing to check/replace?
there's a high pressure cutout . bypass it but keep car moving so condensers get cooling air and try
are you able to determine if fans shut off or go high speed when it occurs?
 

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2012 MP4-12C
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Discussion Starter · #22 ·
I have same issue .. took to dealer car on extended warranty they didn’t cover filling the system .
To them it’s maintenance item and system not failing ..so they didn’t cover adding r132a
But still same issue on idle hot day still not cold enough.. and some times while driving get cold then hot
Are all have same issue .. is it possible the compressor ..
Dealers tested all ok
I’ll be doing the compressor next, will let you know if it solves the issue
 

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2012 MP4-12C
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31 Posts
Discussion Starter · #23 ·
there's a high pressure cutout . bypass it but keep car moving so condensers get cooling air and try
are you able to determine if fans shut off or go high speed when it occurs?
Interesting, Ill look into how to bypass it
Fans seem to operate normally weather im at a stop or highway speeds. The only thing making a difference is if I hit boost or not.
 
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