Why does my air conditioner compressor not come on?
There is also a low pressure switch on the line going into the evaporator. If it is faulty or senses low presssure the compressor will not be allowed to come on. That little snowflake that has the cross in it to show when the A/C has been turned off.
What kind of air conditioner does a Chevy Silverado have?
I have a 1996 Chevy Silverado. The compressor is good and the pressure switches are new. They A/C works if I connect a hot wire to it but it constantly kills my battery.
What was the problem with my GMC pickup truck?
Specifically, the lawsuit claimed the active fuel management (AFM) system, piston rings and PVC system in these vehicles were faulty and caused excessive oil consumption, as well as premature spark plug degradation and engine malfunction.
Why does my GMC pickup truck use so much oil?
The AFM system, which disables some of the engine’s cylinders at lower RPMs to reduce fuel use, is the most common cause of this issue. While the system accomplishes this, it also leads to oil use problems. Some drivers have reported using as much as a quart of oil every 1,000 miles.
Why is my air conditioning not working on my GMC Sierra?
While there are a variety of reasons your GMC Sierra 1500 air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
Why does my GMC climate control switch to heating?
Why would the GMC climate control (dual control) on the driver’s side suddenly switch from air conditioning to heating on a 2004 Sierra 1500. The most common cause for this to happen is an issue with the driver’s side temperature actuator.
What is the temperature control on a GMC CK truck?
Power is routed back out to Pin 7 through a 3.8 ohm resistor and the Max AC switch, but on a 1500 truck Pin 7 is not used. The Blend (temperature) door control is powered directly from +12V via Pin 5.
Are there any recalls on GMC climate control?
GMC has issued a recall for fans that will not shut off. This is the reference: The dealer should be contacted for free repair. Another reason for this to happen is a defective blower resistor. It is located next to the blower under the right side of the dashboard.
What should my AC low side pressure be?
When the engine is on and the AC is on high, low pressure readings should be around 30 psi and the high pressure side should be about 250 psi depending on your car. The correct reading will display once the clutch engages and the gauge stops cycling.
What should the AC pressure be when the engine is on?
When the engine is on When the engine is on and the AC is on high, low pressure readings should be around 30 psi and the high pressure side should be about 250 psi depending on your car. The correct reading will display once the clutch engages and the gauge stops cycling.
What does it mean when your AC pressure is on both sides?
If there are readings on both the high and low sides but they are not the correct specified pressures, it means that certain parts of the AC system are not functioning properly, such as the expansion valve, compressor, and clutch. AC pressure readings and what they mean
What to do if there is no power to the AC compressor?
CondoCruiser, Plan-B Trucking, Cetane+ and 1 other person Thank this. put gauges on system. if there’s no freon. there’s also no voltage to the compressor. you need at least 50 lbs freon before the compressor will kick on. think, low pressure switch staying off.
Why does my air conditioner have low pressure?
There could be several causes leading to this condition including compressor issues, low-level of refrigerant, trouble with the heater or AC controls, and others. One symptom indicating a complication in the air conditioning is AC low side high, high side low pressure.
When to change AC low side high side low pressure?
Similarly, the fan also has to spin when you turn the system on. When all of these components appear to work fine and the AC low side high, high side low problem persists, you may need to change the compressor to fix the unit. However, it is always better to consult a mechanic before deciding to replace any part.
Why does the a / C compressor clutch not engage even?
The a/c compressor clutch will not engage even when I jump the low pressure switch thats mounted on the top of the accumulator (dryer). Is there another method such as direct from the battery? There are two wires goin into the compressor instead of one so I am unsure of how.
Why is the pulley on my AC compressor not working?
Check the front side of the clutch to examine its condition. Also, find out whether the clutch and the pulley are spinning. If only the pulley is rotating, the compressor clutch is having an issue, which could be stemming from several sources – a blown fuse, bad clutch oil, low-pressure lockout, or an open wire in the oil.
Why does my AC compressor clutch not engage?
Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. AC compressor clutches receive power in a number of ways.
Can a low pressure switch cause a compressor to go off?
Put the AC on MAX before checking the compressor. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. The system’s computer keeps the relay grounded but it can go on and off due to the bad switch.
Why is the AC compressor on my Nissan club not working?
OP — “compressor not working.” “i check the hi side and the low side pressure. the low side was about 70 it’s too hi and the hi side was 130 i connect a wire from my vehicle battery direct to the ac compressor s wire to jump it but nothing happened not engaged !”
What should I do if my AC compressor is not working?
The high side and low side pressure of the AC system would be the SAME (equal) when the compressor is inoperative – not working. Verify system is correctly charged. When compressor fails to engage, check pressure switch and AC relay and AC fan relay.
What does it mean when your AC compressor does not spin?
It is an ominous sign when the clutch engages but the compressor does not spin. Changing the compressor clutch could be the only solution in this case. A bad AC compressor clutch needs immediate fixing. A delay can cause serious damage to the air conditioning system and the engine.
Put the AC on MAX before checking the compressor. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. The system’s computer keeps the relay grounded but it can go on and off due to the bad switch.