Question about 1998 Chevrolet Malibu
The air conditioner blows cold air when the green light is lit on the AC switch. However the light on the switch goes off after 30 seconds to a minute. It takes pushing the button 5-10 times before the light comes back on and the air get cold again but only for a short period of time. Is it a bad switch or is there something else that is causing the switch to turn off. Has anyone else encountered this problem. Thanks in advance for your suggestions.
'64 could be right, but these Malibu's also have a tendency to go through HVAC head control units, among other things. I have taken the head unit out of mine and cleaned the contacts, etc...with some success. However, from what I've seen, this is just a temporary fix. These units run upwards of $200 at a dealer, but you can get one online for just over $100. It is a really easy install.
Other common problems include:
-Cruise control modules going bad (cruise kicks off at will)
-Bad resistor on fan blower (only speeds 3-5 will work)
-Front coil springs breaking
-Front brakes wear funny, excessive wear
-Moisture in headlight housings
Posted on Aug 29, 2008
Most likely it is not related to the switch. More likely is the AC system is undercharged on refrigerant. The AC system will kick in when the refrigerant pressure on the low pressure side is high enough. After the compressor runs for a few minutes, this causes the low pressure side to drop below operating range and the low psi safety switch turns off the AC system. Once it has shut off the pressures stabilizes to a level where the safety switch will let the system operate again, making you think after turning the AC switch off and on again that it might be the problem. The best way to diagnose this problem is to use a guage manifold set to monitor what the pressures in the AC system are actually operating at when this occurs.
Posted on Aug 10, 2008
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Posted on Jan 02, 2017
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