Question about 2007 Chevrolet TrailBlazer SS

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Why does my ac compressor turn off and on while am parkin also the air is not cold its like the air fan but when am drivin its great?

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Low on charge of r134a? Try adding a can to see if performance increases.

Try that intermatics 'Arctic Freeze' which has oil and sealant as well as a NASA created ingredient that makes the a/c get colder faster up to 50% better.

Posted on Jul 05, 2010

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03 grand am ac wont blow cold air


Two things are very likely to be your problem. Freon or compressor. Turn on the ac on cold and see if the compressor is engaging, if it is and stops and goes or if it doesn't. try to check the compression on the low side of your ac, the smallest plug where you service the ac. Or take it to an ac professional to get it refilled or checked. Remember, just because its blowing air, it doesn't mean its working. There are fans inside the car that push the cold air inside your vehicle and most of the time these will work, but that's not the only part required to blow cold air inside your car, the compressor is what makes the air cold.

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Air conditioning problem


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Ac is not blowing out cold air. You have to put gages on the system and it shows its has freon.Checked all fuses and relays. The two fans in engingine compartment do not come on when the ac is turned on but does when the engine gets hot. The compressor engages when turned on also.
If the magnetic clutch engages the compressor and still no cold air could be still low in freon or the HVAC unit.

Blower motor not working all the time...if I bang the dash near the glove box, it comes on then works great. Is this the switch assembly, the resistor problem, or should I be replacing the blower motor?


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I have a 97 Toyota Camry. The AC has been working great and gets really cold. Yesterday as I am driving the light on the ac power button starts to blink, after about 45 seconds the ac turns off and stops...


CHECK THE AC AND HEATER CONTROL FUSE.MORE LIKELY FUSE BLOWED BECAUSE AC COMPRESSOR COULD HAVE FAILED IF LOW SIDE IS OVER 100 PSI. THE REED VALVE PLATE IN COMPRESSOR PROBABLY DAMAGED CAUSED COMPRESSOR FAILURE BLOWED THE HVAC CONTROLS FUSE. HAVE AC SHOP CHECK IT OUT.

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The ac in my 2006 dodge 2500 gas engined truck does not blow cold when the engine is at idle. when running normal speeds the air gets cold


start by cleaning or replacing your in cabin air filter. check to see if your AC condenser fan is turning when the AC is turned on. Make sure the front of the radiator is not clogged with bugs, mud, etc. Check AC compressor relay-make sure the compressor clutch is turning the compressor with engine at idle. lastly check for proper refrigerant charge.

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1 Answer

My ac compressor is not workin well


You need to have your pressues check at lower rpms it sounds like your a/c compressor doesn't have enough of a charge to remove the heat from the air but at higher rpms it can because higher rpms means higher flow and higher pressure.

Jul 05, 2010 | 2007 Chevrolet TrailBlazer SS

2 Answers

1999 Alero: where is the a/c control tempature :problem is wh...


WELL TURN ON AC MAX COLD HIGH TO SEE IF COOLANT FANS TURN ON.IF NOT YOUR REFRIGERANT SO LOW THAT THE AC REFRIGERANT PRESSURE SENSOR WONT CLOSE CIRCUIT TO TURN ON COOLING FANS.MEANING YOU NEED HAVE AC CHECKED AND CHARGED.ALSO CHECK COMPRESSOR FOR POWER IF NOT YOU HAVE BLOWED FUSE OR BAD RELAY.IF FUSE AND RELAY GOOD YOUR AC COMPRESSOR CLUTCH COIL OPEN OR THE AC CONTROL SWITCH IS BAD.IF COMPRESSOR IS RUNNING WHEN YOU TURN ON AC YOUR AIR TEMPERATURE ACTUATOR NOT WORKING.

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2 Answers

No cold air


air doors stuck broke or not getting vacuum.

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