Q: AC is not blowing cold air

asked by on January 29, 2016

My AC is not blowing cold air. I had the compressor changed about two years ago because there was something in the oil that made it look silver. I did not flush the system until a year ago, and now I am being told I need to change the compressor again.

Hi. Generally, a silvery look to the oil indicates metal particles in the oil system. If this occurred when the oil compressor failed and the system was not thoroughly flushed, then the metal particles can wear the pistons and walls in the new compressor causing it to fail prematurely. Anytime a compressor fails internally, it is always best to replace the receiver/dryer and filter because they can hold/trap metal particles that can be released into the refrigerant system. Before condemning the AC compressor though, a set of gauges should be connected to the high and low side hoses to obtain a pressure reading. Refrigerant should also be recharged into the air conditioning system to ensure proper charge level. By doing these checks and correcting other issues, you may find out that there is a less expensive alternative. You may want to enlist the help of a mechanic, like on from YourMechanic, who has the training and equipment to diagnose the air conditioning system’s issues.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

My 2002 Ford Crown Victoria is acting like it want to go, even though I'm not pressing on the gas

Hello. The most common cause of the high engine idle accompanied with a delayed acceleration will be a vacuum leak in most cases. This engine gets vacuum leaks on the vacuum connection on the intake manifold for the PCV hose....

the car starts but the steering wheel is locked and won't turn

Hello. There may be a couple things going on here. If the steering wheel is indeed locked in position, the steering lock mechanism behind the steering wheel may be stuck and in need of a replacement. If the steering wheel...

My car is running hot

I would recommend checking for smoke coming from your exhaust. Since you are not able to find a leak and you are positive that the coolant is not mixing with the oil, it is very likely that your engine is...

Related articles

How Do I Prepare My Car for Summer?
Summer's Summer's heat, dust, and stop-and-go traffic will take their tolls on your vehicle. Follow these tips to ensure optimum wellness of your car: Air Conditioning: Have your air conditioning inspected by a qualified technician. Newer models have...
What Causes the AC System to Leak?
Your car’s air conditioner is responsible for keeping the interior cool and comfortable on hot days. However, in order to do that,...
How Long Does an AC Compressor Belt Last?
For For the air conditioning system in your car to work properly, it has to pressurize refrigerant. That is the function of the AC compressor. The compressor itself gets a signal from the AC relay, and is operated by a...