I have a 1996 nissan altima the ac clutch engages when car is cool. it has the correct freon charge. the ac blows cold then disengages about 10 min later and doesnt cycle again untill I turn the engine off and let it cool back down for a little while, then it does the same thing again. I have changed the high pressure switch IT DID NOT WORK. what other things could it be ?
Nissan came out with a Technical service bulletin on problem evaporators which caused the freon to flow from the expansion valve to the low side hose without going through the heat exchanger portion of the evaporator core it self. It can be spotted by the low side pipe from the compressor which may develop a "frost" on it. What occurs, is that the low side freezes up and has to thaw out before it will cool again.
NTB97-007a was the service bulletin.
Issued on January 15, 1998
Heading: A/C poor performance, suction side shows low or vacuum.
I feel pretty sure this is your problem. It can be verified with a set of manifold guages. The low side after it has been charged, should never drop into a vacuum and rarely drop below 20 psi. no matter how long you run the system.
The only way the problem can be solved is replace the evaporator.
Good luck.
SOURCE: 2003 honda accord air conditioning
replace the black relay between the 2 blue relays in the fuse box. cost about 5 bucks.
SOURCE: Ac compressor will not engage when ac is on.
Check A/C compressor relay. When you say it seems to be full of gas(freon) have you actually put a pressure gauge on the system? If the pressure is too low, the compressor will not engage. If the compressor relay is functioning, check for power at the compressor clutch. If it has power to it and it still is not engaging, the A/C clutch may need replacing. It is usually almost as economical to replace the complete compressor with clutch installed than to just purchase a clutch. Keep in mind if you replace the compressor you should also replace the receiver/dryer also referred to as the accumulator.
SOURCE: 1996 impala ss air conditioner compressor is very noisy
That clutch and coil are serviceable without replacing the compressor but I have had little success with this as usually the clutch gets in that shape subsequently from activity going on inside the compressor which means that clutch is failed generally for a reason.replace the compressor -orfice tube-reciever drier and happy motoring......
SOURCE: 97 Nissan Altima AC/heater fan only works on highest setting
Sounds like the blower resistor module needs to be replaced. Could also be the switch.
SOURCE: 2002 nissan altima a/c compressor wont engage & wippers wont work
it could be a conscience that the wipers stopped too, because elctricly these are not sharing any resources.
there may be a leak in the system. when the freon gets low there is a pressure switch that disables the clutch to prevent damage.
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