Why is my air conditioner not working on my Mazda Miata?
Clutch Cycling Switch – A/C systems use an electromagnetic clutch to activate the compressor. When this switch fails your air conditioning is dead in the water. Blower Motor – If there is no air blowing from your Miata at all, the blower motor is at fault. They are not that expensive and are easy to replace (most of the time).
What kind of air conditioner do I need for a Miata?
I also bought a low-side R-12 to R-134a elbow (I needed the elbow because it’s impossible to get the gauges hooked up once an adapter has been added because everything’s so close to the intake manifold). I only purchased one elbow because I didn’t have any luck finding an adapter for the gauges available to me, which had R-12 connections.
Can a 1990 Miata be converted to R-134a?
( Editor’s note: Please read this article on Refrigerant Recovery .) I have a 1990 Miata which I wanted to convert to R-134a from R-12.
What’s the normal air pressure on a Miata?
After hooking the gauges to the high side, we found that the high side pressure was around 350 psi (normal high-side pressure is max 240 psi). You’re probably saying I should have thought of that before, and you’re right.
Clutch Cycling Switch – A/C systems use an electromagnetic clutch to activate the compressor. When this switch fails your air conditioning is dead in the water. Blower Motor – If there is no air blowing from your Miata at all, the blower motor is at fault. They are not that expensive and are easy to replace (most of the time).
I also bought a low-side R-12 to R-134a elbow (I needed the elbow because it’s impossible to get the gauges hooked up once an adapter has been added because everything’s so close to the intake manifold). I only purchased one elbow because I didn’t have any luck finding an adapter for the gauges available to me, which had R-12 connections.
( Editor’s note: Please read this article on Refrigerant Recovery .) I have a 1990 Miata which I wanted to convert to R-134a from R-12.
After hooking the gauges to the high side, we found that the high side pressure was around 350 psi (normal high-side pressure is max 240 psi). You’re probably saying I should have thought of that before, and you’re right.
How do you tighten the clutch on a Miata?
Just tighten up the bolt that stops the shaft from moving, and take the car for a drive! Then repeat until the engagement point you want is reached! P.S – Mad Swede from miata.net pointed out that i missed a few things.
What to do if your air conditioner clutch does not engage?
If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. 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.
What does it mean when your clutch is not turning?
Both the pulley and the clutch should be spinning. That means the clutch has properly engaged with the pulley. If only the pulley is turning, but the clutch disc isn’t, there’s a problem somewhere in the system.
How do you adjust the clutch on a Miata?
Start by cracking the nut loose on the larger clutch pedal switch (6); it’s a 17mm. This is the nut on the backside, not the silver welded nut on the front. Then unscrew the switch so that the met- al portion of the switch is flush with the weldnut in the bracket (as shown, 7).
When to know if your AC clutch switch is failing?
Lack of cooling If you begin to notice that the AC system is not blowing as cold as it used to, then that may be a sign that the switch has failed, or is beginning to fail. If the switch is not operating correctly, the AC system will not be pressurized correctly and will not work as efficiently in cooling the air.
What should I do if my Clutch cycling switch is bad?
It is also important to be aware that when replacing the clutch cycling switch, the AC system will need to be refilled with the proper amount of oil and refrigerant for the AC system. However, this is something that any professional technician, such as one from YourMechanic, should be able to take care of for you both quickly and precisely.
Where is the AC clutch cycling switch located?
Average rating from 53 customers who received a Heating AC Inspection. The AC clutch cycling switch is a very important component to a modern vehicle’s AC system. It is mounted in the low pressure side of the AC system and its purpose is to detect the flow of refrigerant in the system by measuring the pressure.
What are some common problems with the Mazda MX5?
According to CarComplaints.com, the most common problem with the Mazda Miata MX5 is the air conditioning compressor going out. As of 2015, the average cost of this repair runs around $1,200 and problems begin at around 5,000 miles.
How big is the cooling system on a Mazda Miata?
The cooling system capacity is 6.3 U.S. quarts. Mazda s recommended anti-freeze solutions for the Miata are as follows: Remember that the primary task of liquid cooling is to transfer heat energy from the metal parts of the engine to the radiator and then to the air.
Where are the fans on a Mazda Miata?
If A/C is installed, there is a second fan on the right side of the radiator called by Mazda the ÒA/C Condenser Fan.Ó The A/C fan motor is smaller and the fan shroud fits on differently spaced mounting points, so the two fans are notinterchangeable.
Why is my Miata air conditioner not cold?
Most of the time, when your Miata’s air isn’t blowing cold enough, it is going to be a lack of refrigerant causing the problem. We recommend having a professional recharge your A/C if it does end up being a coolant issue. If you put too much coolant into the system, you can really do some damage.
The cooling system capacity is 6.3 U.S. quarts. Mazda s recommended anti-freeze solutions for the Miata are as follows: Remember that the primary task of liquid cooling is to transfer heat energy from the metal parts of the engine to the radiator and then to the air.
Is the MX-5 Forum part of miata.net?
MX-5 Miata Forum is part of Miata.net. If you haven’t yet visited Miata.net, or are not yet familiar with it, please go there first. There is a wealth of information and it will be very helpful to be familiar with its offerings before becoming involved in the forum. Miata.net also has a brief intro for new users.
If A/C is installed, there is a second fan on the right side of the radiator called by Mazda the ÒA/C Condenser Fan.Ó The A/C fan motor is smaller and the fan shroud fits on differently spaced mounting points, so the two fans are notinterchangeable.
What should the coolant pressure be on a Miata?
The pressure in the Miata cooling system should be between 11 and 15 psi (25.7 to 29.7 psia) maximum, which would place the boiling point of a 50/50 coolant mixture at around 265¡F (at 15 psi) according to the Prestone labels.
Where is the cooling fan located on a Miata?
The base Miata has one fan, mounted on the left (looking forward) side of the radiator, called the Radiator Cooling Fan. The Radiator Cooling Fan motor should use 5.3 – 6.5 Amps.
Is the water thermosensor on a 1990 Miata?
The 1990 FWM is written as though the Water Thermosensor is the temperature gauge sensor, which it is not. There is no data on the actual gauge sensor, although the manual spec on the gauge itself states that the gauge should point to ÒHÓ for a resistance to chassis ground of 20 ohms (18 ohms for Canadian cars). Coolant Flow
What should high side pressure be on Miata?
This was, of course, a mistake and after a test drive, the compressor was engaging and disengaging about once per second. After hooking the gauges to the high side, we found that the high side pressure was around 350 psi (normal high-side pressure is max 240 psi).
How to change air conditioning in a Miata?
1 Can of oil (you can buy the freon with the oil) 2 new nipples. You have to put these nipples on the low and high side. Some have said you don’t have to change the high side nipples. A connecting hose to connect the cans to the car. Gauge to measure how much freon in the system This is what you have to do.
Do you need filler hose for R-134a air conditioner?
As far as the connections go, if you have gauges with R-134a connections on them, buy two elbows. It not, buy the low-side elbow and get a filler hose that has a gauge on it. Again, I couldn’t find a description of the upgrade in the garage or the discussion group. Maybe it’s there and I wasted my time, but anyway, I hope this helps somebody.
When to charge a Mazda air conditioner a / C?
The engine should be running when you charge your Mazda A/C. Follow the instructions as directed on your A/C recharge kit. That’s it! Be careful not to overcharge the A/C system. Overcharging a Mazda air conditioner with freon can cause damage to the A/C system. It will not make the A/C colder.
Why is my Mazda air conditioner blowing hot air?
In this guide, you will find instructions on how to charge the Mazda air conditioner system with refrigerant. If your Mazda is blowing hot air, it may be due to a small leak in the A/C system. This procedure can restore your A/C operation if a small refrigerant leak is present.
Where is the refrigerant port on a Mazda 5?
Park your Mazda in a safe area. Engage the parking brakes and ensure the vehicle is in Park. Pull the hood release under the dashboard on the driver’s side. Prop open the hood. Locate the low-pressure port. This is where you add A/C refrigerant on a Mazda 5. There is a low-pressure port and high-pressure port.
The 1990 FWM is written as though the Water Thermosensor is the temperature gauge sensor, which it is not. There is no data on the actual gauge sensor, although the manual spec on the gauge itself states that the gauge should point to ÒHÓ for a resistance to chassis ground of 20 ohms (18 ohms for Canadian cars). Coolant Flow
What is the boiling point of water in a Miata?
The boiling point of water at 14.7 psia is 212¡F, and if the pressure is increased, it rises. The pressure in the Miata cooling system should be between 11 and 15 psi (25.7 to 29.7 psia) maximum, which would place the boiling point of a 50/50 coolant mixture at around 265¡F (at 15 psi) according to the Prestone labels.
How to take care of a new Miata?
Just a mild soap and water is sufficient. Be sure it is dry before putting it down, and if the car is new, take care to be sure the fabric folds correctly. Some people use Convertible top treatments, and some swear by Armor All.
What should I do if my Mazda Miata makes noise?
Newer Mazda pads have reduced this problem. Look at the color of your pads, green are older and blue are newer (both have the same part number so ordering new pads is not easy). We usually put high temperature anti-seize on the back of the pad.
Do you need a break in on a Mazda Miata?
Mazda’s break-in recommendation is as follows: No special break-in is necessary, but a few precautions in the first 1,000 km (600 miles) may add to the performance, economy, and life of your Mazda. Do not race the engine.