2013 Nissan Altima SV 2.5L 181k miles
AC problem ive taken it to 3 diferent mechanics they said is the wiring harness because theres no power from the button to the compressor clutch (clutch not engaging). when I put the gauges it reads the high pressure low and the low preasure high... It has a new compressor on it.. ive drive it out of town every weekend (320miles) AC always used to work but it suddendly stop.. I tried turning on the AC(clutch) manualy but the car died every time.. my question... is it really the harness? Do i have to take it to the dealer??
If you hot word to compressor in the engine died that means it's a compressor at a minimum is shot could be a lot more but you hook up the compressor to power it comes on in the car dies the compressor and a minimum is shot
Is that new compressor new or is it rebuilt? The latter have a poor reputation for quality.
Was the compressor replaced because the old one seized up? If that is the case, typically that causes some pretty severe contamination in the AC system. When this happens, any parallel-flow components (condenser, evaporator) must be replaced because they may contain debris (metal shards) that cannot be flushed out. Expansion valve or orifice tube should also be replaced since they can retain debris, drier replaced, and hoses flushed out. If this is not done the new compressor can quickly fail when leftover crud travels to it and jams up the works.
Can you rotate your compressor crankshaft by hand? This would normally be attached to the inner part of the clutch. It should rotate smoothly by hand in its normal direction of rotation with no bad noises. If it's binding up the compressor has failed internally. I would expect that if this were the case rather than the engine dying the fan belt would break, but it may be worth checking to see if you have a mechanical problem going on there in addition to an electrical issue. Or, perhaps you have a short in the compressor clutch coil that's causing the engine to cut out. I wouldn't expect it would have that effect but systems are so interconnected in modern cars it's a possibility.