A/C issues

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
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motoxxxloak
Posts: 49
Joined: Wed Sep 14, 2011 9:11 pm
Car: 2006 Infiniti M45, Custom exhaust from cat-back, 20" MRR GT1 20x8.5 front and 20x10 rear
Location: Fontana,CA

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I did some searching, but couldnt find the exact answer I was looking for.
When im sitting still, whether it be at a stop light or in a parking lot, my A/C starts to blow out warm/hot air. When I take off again, usually short after it blows out ice cold again. If im sitting in the parking lot on my lunch break, sometimes if I give it a little gas, it will either blow out cold and stay cold; blow out cold and get warm again; or still keep blowing out warm. This just started happening recently...any ideas??


kermit the guy
Posts: 388
Joined: Tue May 03, 2011 11:30 pm
Car: 2008 infinity M35 Sport
Location: SoCal

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i remember my old cressida doing that and had it checked and i had to replace the condenser, dont know if its the same with yours , im not knowledgeable in the AC department . i seen those places that do a check for free !

The00Dustin
Posts: 1041
Joined: Mon Jun 29, 2009 4:05 am
Car: 2006 Infiniti M45
Location: Bloomington, IN

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I remember a post recently about the opposite happening when it was cold, and the possibilities were thermostat and low coolant (these don't apply to A/C). However, applying a bit of logic, the "similar, but different" thermostat possibility probably goes away (I'm not a refrigeration expert, but I don't think they ever restrict/block flow of coolant while in use). The "similar, but different" coolant possibility stands out, though, as coolant and refrigerant are both affected by engine speed (via the water pump and compressor). It stands out even more when you throw in kermit's post. Presumably the condenser needed replaced because it leaked (condensers don't have any moving parts), much like a radiator would have needed replaced in the "similar, but different" instance I have been referring to. IOW, and this advice comes with no experience or warranty, but perhaps you should start with an A/C recharge kit from your favorite auto-parts store and then talk to a refrigeration specialist (or mechanic who works on A/C's) if that doesn' t solve your problem (or if your problem comes back quickly). Note that the environmentally friendly thing to do would definitely be to go straight to a certified specialist since your system could be leaking, but I'm sure lots of people would tell you that it's not uncommon for a 5 year old car to need a re-charge (I just inadvertently had my 2006 M recharged, but it didn't need it), and there is no guarantee a certified specialist would check for leaks before doing a recharge (thus causing the same potential environmental harm).

simplyfancy_
Posts: 38
Joined: Sun Nov 13, 2011 9:42 pm
Car: M45

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i dont have ac either. its either a pulley or ac compressor.


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