1999 Volkswagen Jetta Ac Fans Not Working [Solved]

Do you own a 1999 Volkswagen Jetta and are experiencing issues with your AC fans If so, you are not alone. This is a common problem that can be frustrating and inconvenient. But don’t worry, there is a solution. In this troubleshooting guide, I will walk you through the steps to diagnose and fix the problem.

Why 1999 Volkswagen Jetta Ac Fans Not Working

Bad blower motor resistor

The blower motor resistor is a small electronic component that controls the speed of the blower motor. If the resistor is bad, the blower motor may not work at all, or it may only work on high speed.

Bad blower motor

The blower motor is a small electric motor that moves air through the vents. If the blower motor is bad, it will not be able to move air through the vents, and the air conditioner will not work.

Bad wiring

The wiring for the air conditioner can be damaged or corroded, which can prevent the blower motor from working properly.

Climate control module malfunction

The climate control module is a computer that controls the operation of the air conditioner. If the climate control module is malfunctioning, it may not be able to send the correct signals to the blower motor, and the air conditioner will not work.

How to Troubleshoot: 1999 Volkswagen Jetta AC Fans Not Working

The air conditioning (AC) fans in your 1999 Volkswagen Jetta help to circulate cool air throughout the cabin. If the AC fans are not working, you will not be able to cool down the interior of the car, which can be dangerous in hot weather. There are a few different things that could cause the AC fans to stop working, and it is important to troubleshoot the problem in order to find the cause and fix it.

Symptoms

There are a few different symptoms that you may experience if the AC fans in your 1999 Volkswagen Jetta are not working. These include:

The AC does not blow cold air
The AC blows warm air
The AC makes a strange noise when it is turned on
The AC does not come on at all

Troubleshooting

To troubleshoot the problem with the AC fans in your 1999 Volkswagen Jetta, you will need to:

1. Check the fuses.
2. Check the wiring.
3. Check the AC compressor.
4. Check the AC condenser.
5. Check the AC evaporator.

Checking the fuses

The first thing you should do is check the fuses for the AC fans. The fuses are located in the fuse box under the hood of the car. There are two fuses that you need to check: the AC fan fuse and the AC clutch fuse.

To check the fuses, you will need a fuse tester. Remove each fuse from the fuse box and insert it into the fuse tester. If the fuse is good, the light on the fuse tester will light up. If the fuse is bad, the light will not light up.

If the AC fan fuse is bad, you will need to replace it with a new fuse. If the AC clutch fuse is bad, you will need to take your car to a mechanic to have the AC compressor replaced.

Checking the wiring

Once you have checked the fuses, you should check the wiring for the AC fans. The wiring for the AC fans is located in the engine compartment and in the passenger compartment.

To check the wiring, you will need a voltmeter. Connect the voltmeter to the positive and negative terminals of the battery. Then, trace the wiring for the AC fans from the fuse box to the AC fans. Make sure that the wiring is not damaged or corroded.

If the wiring is damaged or corroded, you will need to repair or replace it.

Checking the AC compressor

The next thing you should check is the AC compressor. The AC compressor is located in the engine compartment.

To check the AC compressor, you will need to start the car and turn on the AC. Listen for the AC compressor to engage. The AC compressor should engage for a few seconds and then disengage. If the AC compressor does not engage, it is likely that the compressor is bad.

If the AC compressor is bad, you will need to take your car to a mechanic to have the AC compressor replaced.

Checking the AC condenser

The AC condenser is located in the front of the car. The AC condenser is a radiator-like device that cools the refrigerant from the AC compressor.

To check the AC condenser, you will need to look for signs of damage. The AC condenser can be damaged by road debris or by impact damage. If the AC condenser is damaged, it will need to be replaced.

Checking the AC evaporator

The AC evaporator is located in the passenger compartment. The AC evaporator is a small radiator-like device that cools the air from the AC system.

To check the AC evaporator, you will need to look for signs of damage. The AC evaporator can be damaged by road debris or by impact damage. If the AC evaporator is damaged, it will need to be replaced.

Conclusion

If you have checked the fuses, wiring, AC compressor, AC condenser, and AC evaporator and you are still having problems with the AC fans, you will need to take your car to a mechanic to have the problem diagnosed and repaired.

FAQs: 1999 Volkswagen Jetta AC Fans Not Working

Why are my 1999 Volkswagen Jetta AC fans not working?

There are a few possible reasons why your 1999 Volkswagen Jetta AC fans may not be working. Here are some of the most common causes:

The AC compressor clutch is not engaging: This is the most common cause of AC fan failure. The AC compressor clutch is what engages the compressor and starts the flow of refrigerant through the system. If the clutch is not engaging, the AC fans will not come on.

The AC condenser fan is not working: The condenser fan is responsible for cooling the refrigerant as it flows through the condenser. If the condenser fan is not working, the refrigerant will not be able to cool properly and the AC will not work.

The AC evaporator fan is not working: The evaporator fan is responsible for blowing air over the evaporator core. This air helps to cool the air that is coming out of the vents. If the evaporator fan is not working, the air will not be cooled properly and the AC will not work.

The AC control head is not sending the correct signal to the AC compressor: The AC control head is the part of the system that tells the AC compressor when to turn on and off. If the control head is not sending the correct signal, the AC compressor will not turn on and the AC fans will not come on.

The AC system has a leak: If there is a leak in the AC system, the refrigerant will leak out and the AC will not work.

How do I fix my 1999 Volkswagen Jetta AC fans?

To fix your 1999 Volkswagen Jetta AC fans, you will need to diagnose the problem and then fix the cause of the problem. Here are the steps involved in diagnosing and fixing the problem:

1. Check the AC compressor clutch: The first thing you need to do is check the AC compressor clutch. To do this, you will need to remove the serpentine belt and then turn the engine over by hand. If the AC compressor clutch engages, you will hear a clicking sound. If the AC compressor clutch does not engage, you will need to replace the AC compressor clutch.
2. Check the AC condenser fan: The next thing you need to check is the AC condenser fan. To do this, you will need to remove the AC condenser fan shroud. Once you have removed the AC condenser fan shroud, you can check to see if the fan is spinning freely. If the fan is not spinning freely, you will need to replace the AC condenser fan.
3. Check the AC evaporator fan: The next thing you need to check is the AC evaporator fan. To do this, you will need to remove the glove box. Once you have removed the glove box, you can check to see if the fan is spinning freely. If the fan is not spinning freely, you will need to replace the AC evaporator fan.
4. Check the AC control head: The next thing you need to check is the AC control head. To do this, you will need to disconnect the electrical connector from the AC control head. Once you have disconnected the electrical connector, you can check to see if the AC control head is sending the correct signal to the AC compressor. If the AC control head is not sending the correct signal, you will need to replace the AC control head.
5. Check for a leak in the AC system: The final thing you need to check is for a leak in the AC system. To do this, you will need to use a leak detector. If there is a leak in the AC system, you will need to repair the leak.

What are the symptoms of a 1999 Volkswagen Jetta AC fan problem?

The symptoms of a 1999 Volkswagen Jetta AC fan problem may include:

The AC does not blow cold air.
The AC fans do not come on when the AC is turned on.
The AC fans come on but do not blow air.
The AC fans make a loud noise.
The AC fans do not turn off when the AC is turned off.

What is the cost to fix a 1999 Volkswagen Jetta AC fan problem?

The cost to fix a 1999 Volkswagen Jetta AC fan problem can vary depending on the cause of the problem. The average cost to fix an AC compressor clutch is around $200. The average cost to fix an AC condenser fan is around $100. The average cost to