Category Archive: AC – Air Conditioner

Chalky Film

Car Information:
Buick Century
Year: 1994
Engine Size: 3.1 V6
Trans: Automatic

Issue/Question:
The bottom of my A/C compressor has a fine chalky film of a greenish yellow color that could be a leak, however it’s dry. About 3 years ago you put in ICE 32. My air is running great. Do I have have a pending problem? How much does a new compressor cost?

Answer:
It sounds like it may have started leaking then stopped! If needed bring it by and we will check the refrigerant level.

Magic Mechanic
1432 Lee Road OrlandoFL32804 USA 
 • (407) 298-7447

AC Cuts Off

Car Information:
Cadillac DeVille
Year: 2004
Engine Size: V8
Transmission: Automatic

Issue/Question:
AC blower cut off and stayed off for a day or two. The dealer replaced the electronic control board and it did not correct the problem. He then replaced the blower motor and now the blower cuts on and off for 2 seconds periodiacally when we run the ac blower on high. can you tell me why?

Answer:
Bad connection or blower control module.

PT Cruiser

Car Information:
Chrysler PT Cruiser
Year: 2004
Engine Size: 4 cylinder
Trans: Automatic

Issue / Question:
When stopped at a traffic light or in traffic, the engine will start running rough, AC stops blowing cool air and engine begins overheating. I also notice what seems to be some warm extra humid air coming out of the ac vents inside the car. Once I am rolling again at 45 plus mph everything returns to normal.

I have had the cooling fan replaced twice, first a little over 2 years ago and they also recharged the ac at that time. They said the humid air was probably refrigerant being forced out of the ac system through some kind of pressure relief valve. The car ran fine after this for a little over a year.

The second time was about 6 months ago which again worked for a few weeks and then the same problem started over again. When I took it back they found a problem with the wiring harness going to the fan and replaced the wiring harness, fan, thermostat and flushed the cooling system. This time they told me the ac system was fully charged and there was no need to recharge the ac system. The car has been fine for the last 5 months but now the problem is starting again. What could be causing this problem? In doing online searches I have seen where this seems to be a problem with PT Cruisers but I have not found any definitive answers as to what the cause and fix is. Any information and direction you can provide would be greatly appreciated.

Answer:
If the cooling fan is running, sounds to me like you may have a heater core leaking coolant slowly, and when it gets down so low the engine starts to overheat causing the A/C to switch off and that would also explain the humid air inside the vehicle.

For professional auto repair and auto services in Orlando you can call our shop today at 407-629-2661.

Ford F150 Vacuum

Car Information:
Ford F150
Year: 1994
Engine Size: 5.8L
Trans: Automatic

Issue / Question:
My car is high idle, I changed the IAC valve three times. Last time, I scraped and vacuumed out the carbon. Each time it runs great for 2-3 days then the idle revs up really high. I turn the truck off, wait just a minute and then turn it back on and it runs fine for a few minutes then idles high again.

Answer:
It sounds like the ISC is trying to compensate for an intermittent vacuum leak. It’s possible the EGR valve was sticking open from carbon.

For professional auto repair and auto services in Orlando you can call our shop today at 407-629-2661.

Ford Mustang Air Conditioning

Car Information:
Ford Mustang
Year: 1998
Engine Size: 3.8 V6
Trans: Manual

Issue / Question:
My air is not cooling as good as it used to and seems to be getting worse. When i sit at a light with the air on you can watch the rpm gauge and about every 10 seconds the rpm gauge goes down where something turns on and then goes back up to normal after it clicks off and continues to do so every 10 seconds. Can you tell me what the problem might be?

Answer:
Lets try a recharge first. Cycling on and off may be because the system is low and needs recharged. If it’s never been charged it is due.

For professional auto repair and auto services in Orlando you can call our shop today at 407-629-2661.

AC Problem in Chrysler

Car Information:
Chrysler Town and Country
Year: 2003
Engine Size: 3.8
Trans: Automatic

Issue / Question:
A/C problem. Recently had new compressor, expansion valve installed. Since the repair was done, air on drivers side does not get nearly as cold as the passenger side or rear air. I have checked the actuator doors on the plenum and all seem to be functioning. Any ideas on what I can do?

Answer:
iIf the blend door is working its full scale and the proper amount of refrigerant has been used, it leaves one common thing we see when another shop has replaced a compressor and has no cold air or cooler one side then the other. They didn’t purge the existing refrigerant oil out of the evaporator. There is not supposed to be any oil in the evaporator, in a perfect world. Although its impossible to keep it out unless a person uses a product like our ICE-32. Lets say over the years your oil charge in the original compressor 3 ounces got pulled out of the compressor overtime and into the evaporator, not only dose this restrict the evaporator reducing its refrigerant capacity it doesn’t sound like it did your old compressor any favors either! Now someone installed another compressor full of oil and for the heck of it just to make sure the new compressor had plenty of oil they add a little more, now you have a evaporator 1/2 full of oil so your only going to get refrigerant flowing through the upper half of the evaporator (the part the passenger side gets) I would suggest evacuate the system purge the oil out of the evaporator and condenser and recharge the system and add the ICE-32. This should get you back in business!

For professional Orlando Auto Repair you can call our shop today at 407-629-2661.

 

AC noise as car comes to stop

Car Information:
Honda Pilot EX
Year: 2003
Engine Size: 6cyl
Trans: Automatic

Issue / Question:

I have an AC problem that appears to be in the dash area behind the a/c vents. When the ac is on, there is a squealing noise heard only when I come to a stop as though something inside is sliding and rubbing making the noise. Maybe a fan but not sure. Vehicle has 145,000 miles.

Answer:
It sounds like you have already diagnosed your problem! What’s happening is the fan motor armature has worn out the bushing or bearing and when you stop or slow down it shifts and causes the noise,
It will most likely need a A/C blower motor to repair the problem. If you keep using it in this condition it will most likely blow a fuse and quit working all together. Let us know if we can help.

For professional Orlando Auto Repair you can call our shop today at 407-629-2661.

 

AC Clicking in Mustang

Car Information:
Ford Mustang GT
Year: 2007
Engine Size:
Trans: Manual

Issue / Question:

When I start the car or when I move the selector from A/C to Heat or Heat/AC there is a clicking sound for about 5 seconds then stops. It sounds like its coming from under the driver side of the dash.

Answer:
Your are hearing the blend door motor moving the vent door. If its working properly I wouldn’t worry about it unless you notice a problem.

For professional Orlando Auto Repair you can call our shop today at 407-629-2661.

 

Chrysler Town and Country A/C Problem

Car Information:
Chrysler T&C
Year: 2003
Engine Size: 3.8L
Trans: Automatic

Issue / Question:
A/C problem. I recently had a new compressor expansion valve installed. Since the repair was done, air on the driver’s side does not get nearly as cold as the passenger side or rear air. I have checked the actuator doors on the plenum and all seem to be functioning. Any ideas on what I can do?

Answer:
If the blend door is working its full scale and the proper amount of refrigerant has been used it leaves one common thing we see. When another shop has replaced a compressor and has no cold air or cooler on one side than the other, they didn’t purge the existing refrigerant oil out of the evaporator. See there’s not supposed to be any oil in the evaporator in a perfect world. Although it’s impossible to keep it out unless a person uses a product like ICE-32. Let’s say over the years your oil charge is in the original compressor, 3 ounces got pulled out of the compressor overtime and into the evaporator. Not only does this restrict the evaporator reducing its refrigerant capacity, it doesn’t sound like it did your old compressor any favors either! Now someone installed another compressor full of oil and for the heck of it just to make sure the new compressor had plenty of oil they added a little more. Now you have a evaporator 1/2 full of oil so you’re only going to get refrigerant flowing through the upper half of the evaporator (the part the passenger side gets.) I would suggest evacuating the system, purging the oil out of the evaporator and condenser, then recharging the system and adding the ICE-32. This should get you back in business!

For professional Orlando Auto Repair you can call our shop today at 407-629-2661.

 

Honda Pilot A/C noises

Car Information:
Honda Pilot
Year: 2003
Engine Size: 6 cyl
Trans: Automatic

Issue / Question:
I have an A/C problem that appears to be in the dash area behind the A/C vents. When the A/C is on, there is a squealing noise heard only when I come to a stop as though something inside is sliding and rubbing making the noise.

Answer:
What’s happening is the fan motor armature has worn out the bushing or bearing and when you stop or slow down. It shifts and causes the noise. It will most likely need an A/C blower motor to repair the problem. If you keep using it in this condition it will most likely blow a fuse and quit working all together.

For professional auto repair & services in Orlando you can call our shop today at 407-629-2661.

 


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