Why is my Chevy HHR AC not working?

While there are a variety of reasons your Chevrolet HHR air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. What will be the outcome of an air conditioning system diagnosis?

Do you need to change the resistor on a Chevy HHR?

Yes, you will need to have the connector inspected and the resistor replaced. Any mechanic should know how to check this for melting or burning. The resistor sets the lower speeds when you turn the blower switch it directs some of the motor current through different resistors to change the blower speed.

Where is the fuse on a Chevy HHR?

The fuse is the 4th from the left in the top row of the fuse block under hood next to the battery. The label is on the lid to the box and it hinges open. There is a window on top of the fuse to see if it is burnt open but the best way to check will be with a testlight.

What to do if your Chevy HHR gauge is malfunctioning?

Repairing loose electrical wiring usually means that you simply have to reconnect the them. If your instrument panel is malfunctioning, you will need to buy a new one and install it into your truck.

What causes a Chevy HHR to go haywire?

Wiring harness to fuse panel shot a 3rd time. Bumps cause all electrical to go haywire. This car only has 56000 kms because it was plagued with electrical issues its entire life. I purchased it brand new.

What to do if your Chevy HHR has a leak?

When the air conditioner in your 2009 Chevrolet HHR starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant.

How to add refrigerant to a 2009 Chevy HHR?

How to add freon to your 2009 Chevrolet HHR: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

What kind of a / C system does a HHR have?

The A/C system in your HHR consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

How to add freon to your 2009 Chevrolet HHR: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

The A/C system in your HHR consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

What causes an AC compressor to not engage?

If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. AC compressor clutches receive power in a number of ways. They can activate through a relay that’s energized directly by a proper condition of the low and high pressure switches.

How can I tell if my compressor clutch is working?

So start your diagnosis by determining if the compressor clutch works. Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch. Both the pulley and the clutch should be spinning. That means the clutch has properly engaged with the pulley.

Can a low pressure switch cause a compressor to go off?

Put the AC on MAX before checking the compressor. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. The system’s computer keeps the relay grounded but it can go on and off due to the bad switch.

Why is my AC Light not working on my Chevy truck?

Thats all that switch does in the cab is ground that 87 pin. So if everything from the relay to AC compressor works and the AC light in the cab is lighting up, then theres something in between thats not there. Check that, then run a wire.

Can a refrigerant be added to a HHR?

Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your HHR consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

Repairing loose electrical wiring usually means that you simply have to reconnect the them. If your instrument panel is malfunctioning, you will need to buy a new one and install it into your truck.

What does it mean when your HHR won’t start?

If the engine’s ability to fire the spark plug at the right time is called “timing”. If the plugs are firing at the wrong time, or something has happened to cause the camshaft to no longer be in sync with the crankshaft, your HHR won’t start. There will usually be OBDII codes associated with timing related problems, but not always.

What does the temp sensor on a Chevy HHR mean?

The A/C was now working and now all I needed was a check engine light reading (TEMP SENSOR/THERMOSTAT). The parts associate told me to disconnect the battery to reset it. I drove it for a few more miles to make sure everything was still working well and the check engine light disappeared.

Why is the needle gauge not working on my Chevy HHR?

4 people found this helpful. I had the same issue with the temp not reading and A/C not working on 2009 HHR. No needle gauge reading and — reading for on board computer for engine temperature.