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Car Ac Thermostat Not Working

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Open valve 4. After a minute or less, remove the thermostat from the water. * You should see the center section (the valve) of the unit separated from its base; the thermostat has opened. When the lower-temperature coolant reaches the thermostat container, the expanding fluid begins to contract, closing the thermostat's valve.During engine operation, though, the thermostat actually never fully closes or opens, but gradually How to tell if your A/C system needs refrigerant: look at the LOW pressure gauge reading when the engine is OFF.

I actually don't recall if there's much of a difference between hot/cold settings while idling with the heater or AC on. The Thermostat at Work The thermostat starts at a closed position when you start the engine to help it reach operating temperature. How much carbon do I need to clean off head? Depending upon your particular engine/compressor combo, the AC system could add 10 percent or more thermal load to the cooling system. https://forums.penny-arcade.com/discussion/39763/car-thermostat-issue

Can A Bad Thermostat Cause Car Ac Not To Work

They traced the cause to a busted thermostat and replaced that as well. Here are some general guideline for A/C system pressures and temperatures based on ambient outside temperature. If you follow the upper radiator hose towards the engine, you will see the end of this hose connecting to the thermostat housing. It could be two completely unrelated problems.

When a Thermostat Goes Bad, Does the AC Still Work in the Car? More questions 97 Chevy Malibu keeps over heating? Since the drier obsorbs moister that may ... 5 Step 5: Filling the SystemOnce you are sure that the system can hold a vacuum for an hour you may proceed to Auto Ac Pressure Readings God success!

The latter can be done by turning the power on, setting the thermostat, and watching as it goes through the motions. Does The Thermostat Affect Air Conditioning In A Car examine the filter out. For this, you need a set of A/C service gauges. You can buy a cheap one at most pharmacies or department stores.

Shut off the engine and refer to the section, after the next procedure, How Do I Test a Car Thermostat. Car Ac Thermostat Switch See problem #3 9. and respective owners. The thermostat is used to maintain the optimum operating temperature for the engine (not too hot or cold).

Does The Thermostat Affect Air Conditioning In A Car

How do I fix this?

Great instruct able but a few things are off.


A vacuum should be pulled to under 500 microns measured with a micron gauge. Trending What happens if you keep the engine on when at a gas station? 51 answers I was having my rear brakes and rotors done. Can A Bad Thermostat Cause Car Ac Not To Work But how do you know it is the thermostat acting up? Automotive A C Troubleshooting Guide The smell is a problem on older cars, that is why newer vehicles come with a cabin air filter to prevent dust and other things from getting into the evaporator and

This was my thought as well. Add freon 5. You can only upload photos smaller than 5 MB. Aladdins Cave17 months ago from Melbourne, Australia Well done, I hope lots of people read this.Could save them a lot of money before they blow a head gasket.Thumbs up and I've Auto Air Conditioning Pressure Chart

favored17 months ago from USA Good article. A car's heater core is like a second radiator. The drainage tubes that carry condensation away from the evaporator should also be inspected and cleaned. GET A QUOTE Post a question and get free advice from our certified mechanics.

Even more, they'll help you save your engine — and your wallet — from damage. Ac Pressure Troubleshooting Chart T-stat issues will turn off the exhaust blower. All rights reserved.

Source Do I Need to Replace It?

Is your car protected? The telltale oil stains and wet spots that indicate leaks on older R-12 systems are less apparent on the newer R-134a systems because PAG lubricants are not as "oily" as mineral First, the inoperative blower motor needs to be diagnosed. Auto Ac Troubleshooting With Gauges Mold likes damp, dark places.

Clean condenser 3. While the AC and cooling system are mechanically independent, that doesn't necessarily mean that a malfunction in one can't affect the other. Replace clutch coil 6. Well that would explain a heat only problem.

But first, you need to remove the thermostat from your car.The thermostat housing is very accessible in most cars, but you still need to follow some precautions that might apply to Sharing it as well. Answer Questions Does car smoke when water pump goes bad? From the description you have provided, your vehicle's inoperative heater and A/C, may be a combination of problems.

A/C is expensive to work with. Would this be related to the thermostat, or caused by something else? Regardless of which approach you use, the orifice tube or expansion valve should always be replaced when contamination is found. These problems are often the cause of call-outs for air conditioner technicians, at great cost and loss of time, but this needn't be the case.

One of the first things you should check, therefore, is compressor engagement. If the cutout switch is not reading correctly, it can prevent the compressor from coming on. If there is any evidence of leakage around the compressor shaft seal, the seal should also be replaced. Either way this is bad news because your engine can seize up.

Your detail is much appreciated.I have a 2005 chrysler town and country the ac compressor has a whinning noise, when you start the car.Even when the the ac is off.

its your The temp gauge is not the best at determining the actually temp your motor is running at (on my focus, 99% of my coolant had leaked adn the temp gauge didn't This means you have a thermostat that is stuck closed. * If necessary, troubleshoot the thermostat as described in the next section. * If the temperature on the upper radiator hose Suction valve closed 4.