Why is my a / C blowing hot air after battery change?

Turned the ac on and it made some motor noises (im sure it was the motors resetting on the actuators) within 30 sec cold air from both sides Ive experianced my a/c blowing hot air after battery disconnect. Turned key off and on a few times and this cleared things up.

How to fix a car that’s blowing hot air?

Scotty Kilmer, mechanic for the last 45 years, shows how to fix a car that is blowing really hot air, even though the AC system is turned on full cold. Often a bad main AC control unit goes bad, and he shows how easy it can be to replace. 1. Autel Diagnostic Tool: http://amzn.to/2nrT5op 2. Screwdriver set: http://amzn.to/2jaHIfP 3.

Why is my car refrigerator blowing hot air?

Both systems include a compressor, condenser, evaporator, and receiver/drier. Your refrigerator, however, isn’t subjected to the extremes of heat and vibration that go on under a car hood. The system in your car has several failure points—O-rings, seals, rubberized lines—all of which can crack, dry out, and shrink, leading to a loss of refrigerant.

What happens to the climate control when the battery is disconnected?

Here was my understanding. When the battery is disconnected the actuators controlling the climate control can lose their position. They think they are in the cold position when they are really in the hot. Disconnecting the battery again won’t correct it – it’s an on/off thing with the key.

What to do if your a / C is blowing warm air?

Another way is to stop in to Pep Boys for a FREE A/C Quick Check (not available in the state of California) and an associate can give a visual inspection of the compressor to ensure that everything looks in order. 3. Problems With The Electrical Eystem

Is the AC still working after a battery change?

AC only blows hot air, compressor working, after battery change. Followed instructions in manual for resetting idle and fuel trim. Did it 2x, but still no AC.

Why is the AC not working in my car?

Hello. If you recently serviced the electrical system and now your AC is no longer working then it may be possible that the issue is related to the work. The first thing I would do is check the vehicle’s fuses and relays. It may be possible that one of the fuses or relays blew when the battery or alternator were disconnected.

Why does my air con keep blowing fuses?

It may be possible that one of the fuses or relays blew when the battery or alternator were disconnected. This does not always necessarily indicate a major issue, but can be the result of one if a fuse continues to burn out repeatedly. If one of the fuses related to the the AC system has burned out it can…

AC only blows hot air, compressor working, after battery change. Followed instructions in manual for resetting idle and fuel trim. Did it 2x, but still no AC.

What happens to climate control when the battery dies?

Battery died. Afterwards climate control on drivers side messed up. Vents blow hot air while all others blow cold. Seems to be common problem after battery disconnect. Many Internet posts. Tried removing hvac fuses for a few minutes and then start vehicle again and allow to recalibrate.

What happens when you change the battery in a Chevy Tahoe?

I am sure some (or all) have heard of this problem, but I need some help because its driving me nuts! I installed a new battery in my wifes 2002 Chevy Tahoe. Immediately afterward, the controls would only blow heat through the defrost setting, no matter what the dial was set to.

How to recalibrate the HVAC actuator in a GM Truck?

For manual systems it does not matter where the a/c controls are set but if you feel the need to do something, turn the blower switch on (I prefer speed 3) and set the temperature sliders about .5″ to .75″ from full cold. For auto systems, press the auto button, with the key on. Turn the ignition off.

How does the HVAC actuator work on a GM Sparkys?

The driver set when set to “hot” would produce heat through the ducts. The Passenger side would not blow heat on the “hot” setting but it would blow heat when set to “cold” on the Tech2. The temperature sensor readings were interesting as well.

Why are the vents blowing hot air in my Chevy Silverado?

I changed the battery and after the new battery was installed the driver’s side vents blew HOT air even with the AC set to 60. I tried disconnecting the battery cable for a few minutes, cycling they key off/on several times, adjusting the vents to dash/floor/front/etc, pulled the 10A HVAC fuse with the truck off…nothing worked.

What to do if your air conditioner is blowing warm air?

The Fix: If your evaporator coil is frozen, turn the unit off and change the air filter. Wait until the unit has thawed before turning it back on again. If the coils freeze up again, turn the unit off and immediately call a professional HVAC technician to troubleshoot the problem.

Is the front AC blowing cool enough air?

Cabin air filter is fine. The front AC does not seem as cold as the rear AC. Outside temp is a moderate 85F, with 30% humidity. Do you notice this disparity most at idle with the A/C on?

Why is my a / C blowing hot air after battery change?