Rough idle with ac on at stop/park - Honda Civic Forum


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Old 1 Week Ago   #1  
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Rough idle with ac on at stop/park

lately ive been having a rough idle at a stop with my ac on. It makes a clicking sound And idle. Check the freon, but pressure says i still have a lot in it. Ac blows cool air at low. But warm air when high. I just replace my compressor two months ago.

https://m.imgur.com/gallery/vLOJAcJ

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Re: Rough idle with ac on at stop/park

if it is rougher than you'd expect, common problems are the radiator fan not coming on, or too much refrigerant in the system. too much juice in the lines makes it blow warmer than the right amount.

a lot of home-ac repair people just over fill it. a free gauge on a $16 can is not accurate. i repair everything i can at home, but when it comes to filling AC, i have a shop vacuum moisture out of the system and refill it with good equipment. if you filled it at home, you might consider having someone with better equipment redo it.

you have a lot of missing info here, like who did the repairs, it there oil in the compressor, what type of car, manual or automatic, is it filled with r134a or some weird leak stop blend, etc.
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Re: Rough idle with ac on at stop/park

Probably far too much freon in the system. It's soooo easy to overcharge these small systems.

Get a pressure gauge for the high side, you'll probably see it go far beyond 400 PSI when it starts cutting out.

EDIT: Make sure the condenser fan is actually running first.
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