Is an AC compressor supposed to run all the time?

An AC compressor will run until the air temperature at the thermostat reaches a few degrees below the set temperature. How long that is, depends on the ambient temperature, how low the thermostat is set, and the size of the air conditioner. It could be just a matter of minutes or it may never shut off.

Why is my a / C compressor not engaging in my Chevy Silverado?

RE: Terry, If you have power on 86 and 85 is a confirmed good ground from the PCM and you jumped 30 to 87 and the compressor clutch engages then it is possible the relay is faulty. To check the relay, put 12 volts on 86 and ground 85 then use an ohm meter and check the continuity at 30 and 87.

Is the a / C on my Silverado Z71 working?

My 2006 Silverado Z71, 5.3L has A/C acting much the same as “Terry” from 05/June/2018. The difference is the 85 relay terminal is “pulsing” between green indicating a good ground and anywhere from 0.1 to 0.4 V. Would this indicate a bad ground wire coming from the PCM or maybe a bad PCM?

How does the AC work in a Chevy truck?

Recharged, cooled great for a while. On my way home, starting getting warm again, turned ac off for 10 mins, turned back on, cooled for 5-10 min then back to warm air. Compressor???? It’s not making any chattering sound or anything obvious.

How to check oil level in AC compressor?

Examine the oil level in the compressor. Add oil if the level is below the normal point. Check the owner’s manual to check the correct instructions for checking up the compressor oil and level and filling it up. Unplug the single wire connector on the front side of the compressor.

What should I do if my Silverado compressor does not engage?

Hold the can of refrigerant upright and slowly open the valve on the charging hose. The pressure of your can will force the gas into your system. While the compressor may engage immediately, allow the can to empty before removing the charging hose.

What to do if your a / C compressor won’t engage?

HOWEVER, if you cannot turn the compressor on, you cannot recharge your AC levels (grrrr). So you need to use a paper clip to bypass the relay switch and force the clutch to engage. You can then recharge the freon and re install the relay switch and it will sense more pressure and the clutch will engage by itself. Loading…

What’s the fuel pressure on a 1998 Chevy k1500?

Here are the tests I’ve done so far fuel pressure test, fuel pressure 160psi while running, then shut off for 20 min and fuel pressure was at 155 PSI. Dry Compression test on all 8 cylinders between 150-160 psi.

What to do if your Silverado air conditioner is not working?

Locate the red 10 amp fuse marked A/C COMP and remove it. If the metal ribbon within the fuse appears burnt or broken, replace the fuse. If the fuse is okay, the next suspect is the air conditioner relay. This relay is also located in the fuse box, though there’s no visible indicator to verify that it’s in working order.