Question about 2007 Nissan Altima 2.5
A/C & heater takes long time to start blowing, and now a/c does not blow cold air.
Your Air Conditioner might be low on refrigerant. If the AC doesn't cool down and had signs where it took a while to start cooling, you likely have a slow leak. It could be that an O ring wore out and started leaking, or a hose developed a leak. Rubber components tend to be the first parts that wear out over a period of time. A shop can confirm if your 134A refrigerant leaked out of the system.
Posted on Jan 05, 2013
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Posted on Jan 02, 2017
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.
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Paul 'W' U.K
Posted on Feb 24, 2009
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Nov 08, 2013 | 2007 Nissan Altima 2.5
Nov 06, 2013 | 2006 Nissan Altima
Jan 15, 2013 | 2005 Nissan Altima
Nov 15, 2012 | 2002 Nissan Altima
Make sure the Nissan Altima's front wheels are in the straight-ahead position. With the ignition off, disconnect both battery cables, starting with the negative. Wait at least 10 minutes for the air bag's energy to deplete before continuing.
Detach the driver side air bag and steering wheel. Disconnect the air bag module connector and horn electrical connector from inside the wheel's lids. Use a T150 wrench to remove the bolts Store the air bag module face up.
Take out the passenger side air bag. Remove the glove box to reach the module connector.
Jack up the Nissan Altima and securely place it on jack stands. Place a clean container directly underneath the drain plug located on the bottom of the radiator on the passenger side. Carefully remove the drain plug and drain the engine coolant from the cooling system. Put the drain plug back in place and set the coolant aside.
Discharge air conditioner refrigerant. If your car used R-12 refrigerant, it's against the law for you to discharge or recharge the system unless you're an EPA-certified technician, so you may need a professional to do this part. Disconnect the heater hoses from the heater core tubes from within the engine compartment.
Remove the instrument panel from the car. Remove the lower panels first starting on the driver side. Removal includes all the screws and connectors, the audio/deck pocket, switch panel, center console, grilles, pillar garnish, instrument stay and steering member. You may need assistance taking the panel out.
Disconnect the air conditioning housing by taking off the refrigerant lines and thermo control amp. Remove the heater unit from the car and the heater core from the unit.
Install the replacement heater core to the heater unit. Replace the heater unit and air conditioning housing within the car, reconnecting all the lines.
Reinstall the instrument panel, including the steering member, instrument stay assembly, pillar garnish, grilles, center console, switch panel and audio/deck pocket.
Reconnect the heater hoses to the tubes. Connect the steering wheel, both airbags and the glove box back onto the car.
Fill the cooling system. Use new coolant, if you're not certain the old liquid is still good. Recharge the air conditioning refrigerant (unless it requires an EPA-certified technician). Reconnect both battery cables, starting with the positive one.
Run the Altima's engine to its normal operating temperature. Check the climate control operation and inspect the system for leaks.
If you do not want to go through this hassle you have two other options:
Option 1 pay for a mechanic to do all of the above.
Option 2 buy yourself a 12v plug in ceramic heater or two, one you could keep on the dash for screen clearing duties & another you could keep near or on the center console for body warming duties!, best of luck & i hope this helps.
Sep 07, 2012 | 2003 Nissan Altima
Dec 23, 2009 | 2002 Nissan Altima
Aug 09, 2009 | 2004 Nissan Altima
Feb 24, 2009 | 2002 Nissan Altima
Feb 16, 2014 | 2007 Nissan Altima 2.5
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