ac in car sometimes doesn't work

This is one of the most common causes of car ACs not working. My AC turns on sometimes and sometimes it doesnt.

Why Does My Car Air Conditioner Blow Cold Then Warm Firestone Complete Auto Care

Remove the clog and allow water to drain.

. It may be that the clutch on the AC compressor is faulty sometimes it doesnt engage or it could be a wire is loose or a loose connector plug next time it blows hot air when it should be cold lift the hood make sure that the clutch on the AC is engaged hope this helpscheers. I would take it to a good AC specialist. Damp Smell The distinctive smell of mildew flooding out of your air vents is usually caused by a build-up of bacteria and mould.

Compressor is on its way out with faulty valves or foreign material affecting pumping ability. Locate the AC drain pipe underneath the car. Sometimes electric issues in the AC system are caused by worn-out electrical components or wires that have short-circuited.

Car AC Makes Noise When Turned On. Car Air Conditioner Blows Cold Then Warm 1. Leaks can originate from a number of different.

Knowing what to look for can help you troubleshoot why your car AC is not working and let you know what steps you need to take next. Once you have your gauges hooked up move on to observing the AC compressor itself. Detach the drain tube from the engine to access the inside where the clog is likely located.

The car AC not blowing cold air is not limited to these problems but they are the most common ones. Each of these can cause the ac to blow lukewarm or hot instead of cold air. Sep 06 2011 Ford Escort Cars Trucks 0 helpful.

I have had this problem before with another car and I didnt do anything about but it kept getting worse. This has just started to happen with my new car and I dont want it to get worse. Common reasons a cars ac isnt cooling while there are a variety of reasons your cars air conditioning might not be operating at top performance the most common are a refrigerant leak an electrical climate control issue or a problem with the air conditioning compressor.

I usually turn it off and run the car for a few minutes until it decides to turn on. First there should be a small drain hose in the bottom of your air box. Temperature sensor or pressure sensor not functioning correctly.

Is the compressor bad. 2 Start with the AC Compressor When diagnosing an air conditioning issue its easiest to begin at the compressor. Defective Compressor Clutch 5.

If your vehicles air conditioning system isnt working properly its definitely an inconvenienceespecially if youre driving around during the summer. The controls may have faulty switches. When you turn on your air conditioning and hear rattling banging or other unusual sounds its normal to feel a bit nervous about what is causing the issue.

Push the metal wire with the hook side into the drain tube gently by twisting and pushing it until you can find the clog. Blocked Drain Pipe 3. Air conditioning systems are relatively quiet when in use.

Blocked Expansion ValveOrifice Tube 4. Slow Blower Fan Speed 11. Lets look at five common reasons your car AC might have stopped working.

A good sign that your car AC is not working is when they give off a rather unpleasant whiff caused by a variety of problems. Anytime your car makes a noise that wasnt there before could be a sign of trouble. Examples might be wire to the compressor clutch or flaps not operating in the dash unit.

Moisture In The AC System 2. It could be as simple as leaves or. Faulty AC Control Switch 10.

Its a small rubber hose. Your Car Has a Refrigerant Leak. Once youve got a new blower motor installed you need to make sure your AC system doesnt freeze again so you dont short out your new motor as well.

A Corroded Relay 9. When turned on the air conditioner seems to be struggling to blow air or it doesnt work at all. Blocked or Clogged Condenser.

If you notice odors coming from the air conditioning vents. 6 common reasons why your car AC suddenly stopped working are as follows. This usually happens when there is a problem with your vehicles electrical system like a battery that is old and weak.

Fuses can also blow up and affect the whole AC circuitry. With the engine running turn the AC on max cool set fans high and make sure that the clutch is engaging on the compressor. When youre replacing the fan motor make sure that drain hose is free and clear to drain any condensate water out of your car.

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