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Go to the parts store and get a cheap gauge to check the level, your system may have a slow leak that SHOULD have been caught if it was charged by pros. If not buy a can of leak sealer and add it to your system, this will also probably top off your system and get you back in business, if not add another can, IT'S EASY AS HELL REALLY!!

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โˆ™ 2007-05-23 01:01:45
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Q: What to do to get Pontiac air conditioning system fixed when Compressor won't make cold air when engaged Freon level serviced 2 months ago you are stumped as to what to check to get cold air again?
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What caused an air conditioning compressor to turn on or off?

Most automotive AC compressors use a cycling clutch compressor, where the clutch is engaged by pressure switches which will engage the compressor clutch when the pressure reaches a predetermined low level, and disengages it when it reaches a predetermined high pressure.

What causes front end of a 1999 Pontiac Sunfire to vibrate with the ac on?

Well, the compressor might be loose, so when it's engaged, it shakes and thus shakes the entire engine. Or, you may have a loose or broken motor or transmission mount. If this is the case, you would commonly feel some shaking that doesn't feel right and this shaking could be worsened by the compressor being engaged.

How do you change a AC compressor bearing in a 2000 Chevy Cavalier?

You cannot change the compressor bearing, however, you can change the clutch bearing. Which one is bad? Is there a noise when the clutch is engaged, or not engaged?

Why is my automobile air conditioning low pressure and high pressure equalized - low pressure is too high?

Either the compressor is not on, or is not working. The pressures are supposed to equalize when it kicks off- either when you turn it off or when it cycles and cuts itself off for a minute. If the compressor is on and engaged and you are still reading equal pressures, it has gone out.

How is the compressor clutch engaged on the air con system?

When not engaged, the wheel spins freely. When the low pressure switch closes, it closes the electrical circuit to the compressor clutch. This actuates an electromagnet, which pulls the clutch in to engage it.

Does fuel mileage decrease with air conditioning on?

Slightly. Although compressor is always turning, when clutch engaged there is more resistance & more load on the engine. It's probably 3-5 mi. or so gallon difference dependent upon engine.

Why would your compressor clutch be engaged when car is off?

AC Compressor clutch relay may be stuck. Remove the relay and see if the clutch releases.

Why does your Honda accord lose power when the air conditioning is on?

It is not just hondas that do this. Almost all cars do it to some extent. When the A/c compressor is engaged, the engine does have to work harder. Idle will increase, acceleration will decrease slightly, and you'll lose some fuel milage.

How do you fix an air condiosoner pump because it does not spin or work?

Do you mean that the AC clutch does not engage the compressor? Or do you mean that the AC compressor won't turn even if the clutch is engaged? If the compressor is siezed and will not turn even if the clutch is engaged, the only choice is to replace the compressor. If you can turn the compressor by hand (understand that the belt pulley will turn freely with the engine if the clutch isn't engaged) but the compressor clutch isn't engaging, it might just be out of refrigerant. There is a sensor, usually somewhere near the receiver/dryer) that detects the "low side" refrigerant pressure. Once the refrigerant pressure at the sensor drops below a specified level, the compressor will not turn on. In other words, if the compressor clutch won't engage it might just be out of refrigerant.

Why is your ac compressor smoking when ac is on?

The Air conditioning compressor is likely seized. There is a clutch in the pulley that engages the compressor when the A/C is turned on. You can easily check the compressor (with engine off make sure the pulley has had time to cool off as it will be very hot) Try to turn the most center part of the pulley. If you cannot turn it by hand the compressor is seized. The smoke was MOST likely from the serpentine belt rubbing on the seized pulley when the A/C compressor was engaged. Please note that the same belt drives the power steering pump. This belt will be destroyed from the heat and must be replaced to prevent a possible steering failure.

Why is ac blowing hot air after installing freon?

Clutch possibly not engaged compressor maybe.

How do you route serpentine belt to bypass ac compressor on 09 Pontiac g6 2.4l?

It would take some trial/error and a few belt purchases to get just the right length, but there is no benefit. If air is not on, clutch is not engaged on it so no drag or horsepower loss.

The ac compressor on my 1999 Ford Taurus won't stay engaged?

You should have the system checked for the proper amount of freeon. The compressor will not properly engage if the system is low. Hope this helps.

How do you reset your Honda Civic Si compressor?

it sounds kind of weird, but i have a 99 si and it won't run the compressor unless there's a certain pressure in the system, and you can't get pressure in the system cause the compressor won't work. i was thinking of getting a jumper wire and running it to the compressor so it stays engaged-

What should pressure read on low side air on 1996 Thunderbird?

With compressor engaged, 35 to 45 lbs.

Why does air blow out of the accumulator instead of sucking the air in with the compressor engaged?

Assuming that nothing has been changed you're not looking at the accumulator. The aluminum cylinder on the output side of the compressor is a muffler designed to prevent hammering from the compressor being audible in the passenger compartment.

I have a 1994 ford aerostar had a new compressor orfice tube and accumulator installed last summernow my compressor wont work and i cant get it to except freon on the low side?

Make sure your clutch is engaged on the compressor. you can usually do this with a metal paper clip in cycle switch, on the accumulator.

What are possible causes for car ac to blow hot air with the pump engaged?

The chemical in the air conditioning unit needs replaced.

You thought the compressor in the auto ac system rums all of the time that the engine is running so why does not turning on the ac save fuel?

The compressor does not run all the time while the engine is running. The compressor has a clutch which is activated on demand. The pulley may be spinning but that doesn't mean the pump is engaged.

Will you blow the compressor if you start the engine with the ac on?

by compressor i assume you mean the air conditioning compressor. the simple answer is NO. the compressor on all vehicles has a clutch which is activated by a solenoid that draws it in. that solenoid does not receive power until the engine and computer have run long enough to stabilize operations...generally 3-5 seconds. now on older vehicles (1950-1979) i am not 100% on their operations. in any case they won't operate until the voltage regulator stabilizes the power. it is not a mechanical engagement. therefore, again, no it will absolutely not blow your compressor. even if it some how were to be stuck engaged and you started your engine unless there is a malfunction in the system it would still be just fine. it is a sealed system containing its own oil. failure by start-up is not possible.

Why does your ac on your 1993 infiniti j30 blow hot?

Idle the car with the AC running. Open the hood and look at the AC compressor- is the compressor engaged? (the front of the compressor (inside the belt) should be spinning. If not, then have the AC system recharged. If it is turning, then you've got the door to a duct stuck inside the unit.

Would a burnt fuse for the air conditioner on an Impala cause it to blow hot air?

absolutely because if the compressor is not engaged then it can not produce cold air.

Why does my 2004 F250SD 6.0 Liter AC blow hot with the low side pressure at 110?

the low side pressure should be no higher than 42 psi with the compressor running. if the a/c clutch is engaged, the orfice tube is bad or the compressor is bad

Should the air conditioning pulley on a 1998 Dodge Grand Caravan 3.0l turn freely by hand?

Yes they freewheel until clutch engaged (air on)

What does the Refrigeration and Heating Equipment industry produce?

This category includes establishments primarily engaged in the manufacture of commercial or industrial refrigeration equipment or domestic, commercial, or industrial air-conditioning units.