Question about 1997 Cadillac DeVille

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Compressor is off and will not come on, how do you turn the compressor on

Compressor will not come on

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Mine did that the read out on the computer inside the car kep saying compressor is off there certain codes that be on the on board computer that wont let the compressor come on i dont know what they are i just kept clearing codes on the on board computer untill it came on takeing the battery loose wont clear all of the codes u have to do it on the on board computer

Posted on Jun 05, 2009

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It has freon in it? If yes, you need to reset the low freon shut down. To do this just unhook the battery for a couple of minutes.

Posted on May 31, 2009

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1 Answer

Ac vent blower


proceed according and fix it. God bless you
If so, the compressor is working and the A/C system probably contains enough refrigerant to make cold air, so the problem is inside the HVAC unit. Replace the motor that controls the blend air door (this is a difficult job and best left to a professional since it involves tearing apart the HVAC unit -- about an 8 to 10 hour job!).
If the compressor does not engage when you turn on the A/C, see if it will run by jumping the compressor clutch wire directly to the battery (use a fused jumper wire). If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch cycling switch or pressure switch.
If the compressor does not engage when you jump it, the problem is a bad compressor clutch.
If the clutch engages but the compressor does not turn (the belt will start to slip and squeal), the compressor is locked up and you need a new compressor.
If the compressor clutch engages and turns the compressor, but the A/C still does not blow cold air, the system is probably low on refrigerant and needs to be recharged

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Oct 05, 2012 | 2001 Oldsmobile Aurora

1 Answer

How can you tell if the a/c clutch or the a/c compressor is going out if the noise is coming from the same location as well as the compressor still blowing cool air?


This answer is a little tricky to understand unless you read it carefully.

The compressor clutch has an idler bearing in it. This means the clutch can constantly make noise while it turns and the compressor is off. On an individual basis, each bearing is unique by the amount of bearing wear has occurred. Most will be quieter when engaging the compressor in "lock" position, but a bearing missing rollers can be loose in the locked position and be lopsided in how it grips the compressor. The pulley will not roll true or straight to the rotating compressor shaft.

The compressor can make noise separately from the clutch because it needs an internal oil supply for its bearings. There are A/C oil cans and
Freon cans with oil in them. Just like motor oil, there are differences in what type of oil the compressor takes. It is relatively inexpensive to add this type of oil to renew the life of the compressor.

When the compressor is turning, the inner pulley will be locked to the front pulley clutch and both pulleys will be turning. If there is a rumbling sound, it is likely the compressor, but try oil first. The compressor is a pump. It is not silent. You can expect to hear the muffled chirping or clicking of internal valving as it forces compressed gas or liquid past the valving. The valving clicks or chirps as it keeps the flow from backing up into the compressor head.

For a time, the compressor will cool as long as it turns and the clutch turns the compressor shaft. If the bearings inside the compressor seize up, it will probably break the serpetine belt. If the compressor clutch bearings fail, they will start making noise both when the A/C is off and when the A/c is on.

Many times a clutch will be changed only to find that the compressor is also bad. It is not a 1 to 1 relationship. A guess would be a 1 in 10 or 20 occurrence. And it is something even the best mechanics may misdiagnose. This is why sometimes a compressor is included as part of the total estimate, a worst case senario.

Sep 06, 2012 | Cars & Trucks

1 Answer

My air conditioner is blowing warm air on the driver side and cold on the passenger side


see this steps and think with clearly and logically NOT feared. God bless you
checkmark.gif Start with the compressor. Does it engage when you turn on the A/C?
If so, the compressor is working and the A/C system probably contains enough refrigerant to make cold air, so the problem is inside the HVAC unit. Replace the motor that controls the blend air door (this is a difficult job and best left to a professional since it involves tearing apart the HVAC unit -- about an 8 to 10 hour job!).
If the compressor does not engage when you turn on the A/C, see if it will run by jumping the compressor clutch wire directly to the battery (use a fused jumper wire). If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch cycling switch or pressure switch.
If the compressor does not engage when you jump it, the problem is a bad compressor clutch.
If the clutch engages but the compressor does not turn (the belt will start to slip and squeal), the compressor is locked up and you need a new compressor.
If the compressor clutch engages and turns the compressor, but the A/C still does not blow cold air, the system is probably low on refrigerant and needs to be recharged.

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Jul 24, 2012 | 2007 GMC Sierra Classic

1 Answer

A/c compressor not turning on, freon level ok, no power to compressor


Hot wire the compressor from battery and see if it turns on. If it does then there is fault in AC switch/relay/wires. If the compressor still not running then compressor coil is gone, fortunately it can be replaced easily and you need not change the whole compressor.

May 07, 2011 | 2005 BMW X5

1 Answer

How much compressor oil do I add when changing the ac compressor on a 04 expedition with front and rear ac?


When replacing the compressor the dryer should also be replaced, you put 2oz of oil in compressor and stand compressor on pulley for 5 min, then after install turn clutch 10 turns to pump most oil out of compressor, the dryer should have 2 oz of oil also, if you are flushing the ac system out with a solvent then more oil is needed for the system, if your just replacing the compressor then 2oz in compressor.

Oct 09, 2010 | 2004 Ford Expedition

1 Answer

Warm AIR comes out WHEN AC UNIT is on i just


Possible Low on Freon, Bad Compressor Clutchhead, Blown hose, which in turn let all the freon out. Manually power up the single wire going to the compressor with the car running and see if the compressor clutch head turns on. If so Odds are the compressor is good. Check all hoses and compressor for buildup of oil which would be assumed as a leak.

Aug 31, 2010 | 2002 Mercury Sable

4 Answers

How much oil do i put in my 2000 dodge stratus air conditioner compressor?


Most the time its 8 oz,, need to check with the seller and see the specs on compressor,it should say on ac compressor

Aug 22, 2010 | 2000 Dodge Stratus

2 Answers

AC Compressor will not engage.


Inner rim is the compressor. If it wont turn youre compressor is bad.

Apr 16, 2010 | 2000 Saturn L-Series

1 Answer

03 Chevy Tahoe stalls out while taking a slow


have the a/c compressor checked, the a/c compressor might be locking up due to wear and bad bearings. one way to test is to try turning the compressor clutch while the ENGINE IS OFF, if the clutch is very hard to turn or won't turn at all by hand then the compressor is bad. the clutch is what turns the pully, the pully should spin freely, the compressor clutch is on the end of the compressor on the pully side.

Aug 16, 2009 | 2001 Chevrolet Tahoe

2 Answers

Toyota Camry 95 V6 XLE Compressor


THE A.C COMPRESSOR BELT ALSO RUNS THE ALTERNATOR.AS OF YET THERE IS NO PULLEY U CAN INSTALL TO BYPASS THE A.C COMPRESSOR.SO YES YOUR A/C COMPRESSOR MUST TURN IN ORDER FOR THE ALTERNATOR BELT TO TURN.CALL AND A COUPLE OF ESTIMATES

Apr 29, 2009 | 1994 Toyota Camry

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