Question about 1999 Nissan Maxima

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Not cooling ac system is not leaking and is charged properly but when ac is on, air comeing out is still warm

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  • Keith Heavilin
    Keith Heavilin May 11, 2010

    Is the A/C condenser turning on?

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You can check all your fuses inside and outside if equiped. Some will have fuses on the left and / or / right side of vehicle. Some fuse boxes are located under the hood by the firewall.

Posted on May 29, 2009

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2008 Trailblazer Air Conditioner not cooling. blows warm air for the first few miles then cools. It has been recharged.


Philip, You may have to have a good tech, check,diagnose and estimate repair. Could be a few things causing poor AC, recheck your charge level,check your fan at the condenser, make sure the condenser isn't obstructed, compressor clutch could be faulty, system could be plugged with contaminates limiting refrigerant flow.You say the system has been recharged, was it done properly, if not system could be plugged. AC system should of had system checked for leaks,evacuated, flushed, new orifice tube, then recharged with proper quantities of oil and refrigerant. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Car Air Conditioning Problem Diagnosis Repair Help
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Car AC Not Blowing Cold Enough Car Repair Information From MasterTechMark

Aug 18, 2016 | 2008 Chevrolet Trailblazer

3 Answers

My service station did a partial AC charge because it was blowing hot air, 4 days later I noticed a pool of coolant on the driveway and the AC is blowing warm air again.


Clearly you have a leak inspect your ac compressor and hoses if you cant find it i suggest use die and trace to leak as you know ac system need to be seal 100 percent in order the function i asume you have lose nuts or crack on your hoses its easy fix.

Aug 02, 2015 | 2002 Ford Explorer

1 Answer

I have a 2000 Ford Excursion - 7.3 Diesel. A/C not cooling in low RPM but system has freon


Hook up a AC test gage to the low side pressure port under the hood, it should read 28-32 PSI, if not your system is low on charge.

Jul 05, 2017 | 2000 Ford Excursion

1 Answer

Ac cools for sort time then blows warm air


I have a 98 ext. cab with AC, it was a low charge on mine. An O-ring was leaking. good luck, the O-ring set is cheap. I think it was autozone that carried them.
regards, gthsr911

Jul 09, 2010 | 1998 Ford Ranger SuperCab

2 Answers

Camry ac not cooling


you will need the AC serviced with new gas\dryer and leak test, assuming you can hear the AC compressor turning on and off.
Not sure where you are, but in australia you must be licenced to work on AC, with big fines for releasing AC gas to the atmosphere.

The warm air comes from the engine heat not the AC so the warm being normal just means the fan works

May 06, 2010 | 2003 Toyota Camry

2 Answers

While running the air conditioning, the air cools and then warms and eventually cools for a little bit again. I think the water pump is what's needed here? what is the big bolt behind the fan?


It is unlikely that the water pump is causing the trouble you describe. The large hex behind the fan is what you would turn to remove the fan clutch from the water pump shaft. This fan clutch is supposed to detect heated air coming through the AC condenser and radiator and engage the fan more positively with the water pump shaft when more air needs to me moved to cool the radiator and AC condenser. The fan clutch could be bad or the AC system may not be properly charged--either of these conditions could cause the problem you describe.

Feb 25, 2010 | 2005 Dodge Ram 1500

1 Answer

Added freon to ac but it gets warm air when i slow down and starts to cool again when i accelerate


the system may have a leak or ac compressor not functioning properly

Jul 01, 2009 | 2003 GMC Envoy

1 Answer

1995 Honda Civic-AC only blows cool air


the reason it's getting warmer is most likely due to a slow leak. it need the proper amount to be cool. less or more and it will be warm. it's also possible when it was charged he added too much or not enough. also if air is in the system (from not vacuuming the system or in the refrigerant tank) it will not cool as well.

the car need to be recovered, vacuumed (checked for leaks), refilled after purging the refrigerant tank of air.

Jun 24, 2009 | 1995 Honda Civic

1 Answer

1992 Lexus SC300 Air Condtioner blowing cool/warm


the system is low on charge, it has a leak, repair the leak and recharge

Jun 17, 2009 | 1992 Lexus Sc 400

1 Answer

When starting the car the AC Compressor wont come on right away


HI. Here is a complete check list that will help you trouble shot thsi issue. You will find the problem in one or more of these areas stated below.

1. Check Drive Belts - The air conditioner utilizes a drive belt that supplies power to rotate the compressor, which is basically a refrigerant pump. If the belt fails the compressor has nothing to drive it, inspect and replace as needed to restore operation. If belt is intact proceed to the next step.

2. Check for Compressor Clutch Engagement - Turn the air conditioner to the "on" position and set controls to the coldest setting. Start the engine and allow to idle. Then open the hood and inspect the clutch at the front of the compressor, is it turning? "Engaged" if so, the system has enough refrigerant to activate. If the system is low on refrigerant it will not work properly. In this case an air conditioner recharge kit is needed to recharge the system. If the system is low on refrigerant it could cycle on and off, making a ticking noise. If the compressor clutch is not turning proceed to next step.

3. Inspect for Refrigerant Leaks - If the system has a large leak and no refrigerant remains it will not activate. First test system for a static pressure charge, with the engine off attach an ac gauge to the low side pressure port and check the state of charge. Depending on outside temperature there should be between 50 psi and 80 psi. (Cool and warm). A refrigerant leak detector is needed to inspect for leak, but if you do not have a leak detector there is an alternative method. The air conditioner system is designed to run with oil suspended in the refrigerant to lubricate the system. Check for oily residue outside the system by inspecting all hoses, compressor, condenser, evaporator or receiver drier and replace any component that has failed.

4. Inspect Fuses - Check under dash panel and under hood power distribution center. Replace failed fuses as needed, recheck system. If the new fuse fails when reinstalled a short circuit is present and requires diagnosing with a wiring schematic, follow circuits to locate short, repair as needed and recheck system.

5. Check Temperature Control Vents - The vents inside your car are controlled by a cable, electrical servo or vacuum servo. If the temperature blend door is not functioning properly it will cause warm air from the heater to exit the vents. To check this start the car and allow the engine idle, next turn the blower motor speed on low, switch the temperature control from warm to cold while your ear is close to the vents. You should hear the door move inside the heater box as it swings from open to close. If not, insect for a vacuum leak or a shorted motor in the servo, repair the leak or replace the servo motor.

Nov 18, 2008 | 2001 Volkswagen Jetta TDI

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