Question about 2002 Chevrolet Monte Carlo

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I have 2 problems, the low coolant light comes on and the air conditioning blows warm, does it have a leak in air conditioner and where can I add coolant (what kind?); and the security light comes on and sometimes the car won't start. AAA said I had to push the buttons on the key fob. What buttons do I push and why does this happen?

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Low coolant is detected by a sensor inside the plastic resevoir tank. These things lie, so if the resevoir has plenty of coolant, it's probably a dirty or faulty sensor. If you can't see coolant, add it directly to the resevoir. As for the A/C, you can purchase an A/C pressure gauge or complete check and fill kit at a parts store and follow the directions for using it. If the pressure reads low, with the car running and A/C on full blast, add refrigerant until you hear the compressor turn on. Check your gauge again. Once you have it to pressure, you should be good to go. If it never gets there, you have problems. If it gets there and stops working again days later, you have a slow leak.

Posted on Oct 06, 2010

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Air conditioning start blowing out warm air and the engine light comes on. I have put coolant in it and a new sensor but it's still doing it. What else could it be?


check your condenser fan and make sure it is working and make sure there is no restrictions in front of the condenser or radiator.

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My wife has a 2007 chevy impala on idle it is not blowing warm air when you drive down the road it blows warm air you can smell anti freeze but see no leaks what is problem


It sounds to me like you are possibly describing a low coolant condition caused by a leaking heater core. If you can smell the antifreeze, there is a leak. You just have not checked good enough.

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My air conditioner is not blowing out "cold" air and makes noise


The anti coolant is what is added to your radiator so that the water does not freeze when the temp goes down and damage your pump. hence do not confuse this with the air conditioner. When you put on the a/c the load noise could be the engagement of the solenoid coupling your a/c compressor to the engine. If you notice within the bonnet for the gas filling inlet there must be signs of cooling. if not check over the condenser filter on the glass window for any signs of gas or gas pressure , smoky means low gas but a good pressure of gas indicates good visiblity. If not there has been a gas leak and your whole a/c system needs a check right from the compressor to the condenser to the cooling coils inside the dash. The leak has to identified by a pressure check with air filled, check for blocks before the gas can be filled. The compressor pump pressure must be checked or must be overhauled, replacement of the O rings, and reset. I hope you got an idea to proceed and hope I could help. Good day.

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My daughter purchased a 92 olds cutlass ciera - air conditioning


Just go to the auto store and add one can of R134a. Buy a cheap kit that has a hose and a gage. Add to the low pressure side with the engine running. The hose will only fit on the low pressure side anyway. Watch the gage to see if it stays on "OK" range.

report results.

It won't matter if you add R134a to an R12 system. You may need 2 cans. 14 oz each.

May 21, 2010 | 1992 Oldsmobile Cutlass Ciera

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All air stopped blowing in through the vents.


o air coming from air conditioning vents
  1. Check the air conditioner fuse and replace as necessary.
  2. Air conditioner system discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
  3. Air conditioner low pressure switch defective. Replace switch.
  4. Air conditioner fan resistor pack defective. Replace resistor pack.
  5. Loose connection, broken wiring or defective air conditioner relay in air conditioning electrical circuit. Repair wiring or replace relay as necessary.

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I have a 2004 Honda Accord and the Driver's side


the a/c system may be low on a charge. have a a/c shop ck it. if its low, have them ck for a leak. if unable to locate a leak, they may need to rechagre it, and add a UV dye and you may have to bring it back several weeks later.

Sep 21, 2009 | 2004 Honda Accord

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Why am I losing coolant and have no heat or air?


I would start by checking for coolant leaks. Common places would be in the waterpump or heater core. Heater cores can crack and leak. The heat from your vents inside the vehicle comes from air passing over the heater core, which is heated by the hot coolant flowing through the heater core. It acts in a similar fashion to your radiator, with the purpose of heat transfer. A coolant system that is low on coolant will not transfer heat through the heater core. Also, deposits from the coolant system can collect and plug the heater core which will restrict the flow and the amount of heat that is transfered to your heater. If you don't see coolant leaking externally, it may be leaking into the engine. this may be from a blown head gasket or warped head. If this is the case you may notice some whitish color smoke coming from the exhaust, as well as your coolant overflow/storage tank fluid level may increase.
The air conditioning is a seperate system and may be a seperate issue. The system contains liquid freon like a refrigerator. You can by recharge kits at your local autoparts store. If the kit works, you may find there is a leak in the system and you will loose cold air after some time. If thats the case, a certified dealer can fill the system with colored dye to help locate the leak. A bad compressor or evaporater can also cause a/c systems to fail.

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Ac is blowing warm air in my 2005 sierra 2500hd duramax. Any idea


Your system has R-134 Freon in it. the 134 is made up of smaller molecules than the old R-12. The R -134 permeates through the rubber parts of the system. If the system gets too low on Freon, the compressor will stop coming on.(low pressure cut out switch). Have the system serviced with an A.C. machine that can vacuum, measure the amount of Freon in the system, and add the right amount. The machine can also inject die. Later the die will show up under a black light.This will show any leaks you may have.

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Is there a way to charge the Air Conditioner?


Well. Assuming it is an undercharge condition, that means there is a leak. It is a closed system so low refrigerant means its leaving the system. I WOULD NOT recommend doing this yourself. The proper equipment should be used, not that garbage walmart sells. You will more than likely install either the wrong refrigerent type or amount, the wrong oil, too much oil (all of which will cause poor system operation and/or possible compressor damage). You can also not remove the air from the system without the proper equipmentn causing poor operation (none of which is cheap).

Trust me, this isn't a job for the typical DIY'er

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