Category: Auto A/C Repair near me

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Bad A/C Compressor Symptoms

Written by admin on . Posted in AC compressor, Auto A/C Repair near me, car ac compressor replacement.

This are the most common symptoms of a bad a/c compressor:

 A worn compressor pulley bearing, or clutch bearing will cause a growling noise. AC compressor clutch assembly needs to be replaced.

  • Growling noise with the compressor engaged

A/C compressor internal bearing/components damage. The entire ac compressor should be replaced.

  • A high compression ratio

Either an increase in head pressure or a decrease in suction pressure will cause higher compression ratios. Any time a system has high compression ratios the compressor’s discharge temperature will also be elevated. This is because of the higher heat of compression during the compression stroke associated with higher compression ratios. When compression ratios are high, more energy is needed to raise the pressure of the suction gases to the discharge pressure. This means more heat is generated as heat of compression during the compression stroke.

  • Cooling performance decreases
  • A/C not as cold as it used to be
  • Knocking noises from the compressor
  • Squealing A/C compressor drive belt
  • Excessively hot compressor crankcase
  • Compressor pressure plate not engaging
  • Both lines from a/c compressor at the same ambient temperature
  • Gauge pressure ,High side Low and Low side High
  • A/C compressor locked up. Compressor Does not turn when rotated by hand.
  • Compressor pressure plate signs of overheating condition
  • Compressor body signs of overheating condition

The best way to fix a bad car ac compressor

To permanently fix a bad car ac compressor you must first, take care of the condition that led to the compressor damage. Identifying  what damaged the old compressor is the only effective way to prevent the same fault happening to the  new compressor. It is vital to follow the proper manufacturer specifications while installing the new a/c compressor or any air conditioning component.

The top automotive system faults that lead to A/C Compressor Damage.

These are the top automotive system faults that could lead to A/C compressor Damage:

  • A/C compressor over cycling.
  • Excessive high compressor temperature due to air conditioning system contamination.
  • Cooling system underperformance affecting a/c operation.
  • Drive belt slipping on a/c compressor pulley creating excessive high heat load.
  • Slipping clutch pressure plate due to out of specs compressor clutch gap.
  • Shorts to power or ground on the ac compressor clutch coil circuit.
  • A/C compressor clutch relay inoperative or shorted.
  • Inaccurate refrigerant(freon) charges increase compressor failure.
  • Lack of compressor internal lubrication
  • Incorrect type of oil
  • Incorrect or contaminated refrigerant in the air conditioning system.
  • Inefficient or restricted auto a/c condensers
  • High compression ratios

Do you need to get you Car A/C Compressor inspected ?

Schedule an appointment Today for a Car A/C Compressor inspection. Auto A/C Repair LLC. offers a complete automotive air conditioning system mobile repair service.

Auto AC Compressor Failure Symptoms

Auto A/C Compressor Failure Symptoms

Written by admin on . Posted in AC compressor, Auto A/C Repair near me, Car Ac Repair Near Me.

Signs of auto a/c compressor failure:

  • Cooling performance decreases
  • A/C not as cold as it used to be
  • Knocking noises from the compressor
  • Squealing A/C compressor drive belt
  • Excessively hot compressor crankcase
  • Compressor pressure plate not engaging
  • Both lines from a/c compressor at the same ambient temperature
  • Gauge pressure ,High side Low and Low side High
  • A/C compressor locked up. Compressor Does not turn when rotated by hand.
  • Compressor pressure plate signs of overheating condition
  • Compressor body signs of overheating condition

What causes A/C Compressor Clutch Failure?

Causes of A/C Compressor Clutch Failure:

  • A/C compressor over cycling.
  • Excessive high compressor temperature due to air conditioning system contamination.
  • Cooling system underperformance affecting a/c operation.
  • Drive belt slipping on a/c compressor pulley creating excessive high heat load.
  • Slipping clutch pressure plate due to out of specs compressor clutch gap.
  • Shorts to power or ground on the ac compressor clutch coil circuit.
  • A/C compressor clutch relay inoperative or shorted.
  • Inaccurate refrigerant(freon) charges increase compressor failure.
  • Lack of compressor internal lubrication
  • Incorrect type of oil
  • Incorrect or contaminated refrigerant in the air conditioning system.
  • Inefficient or restricted auto a/c condensers
  • High compression ratios

What to do if my auto A/C Compressor fails ?

Technically the compressor can be rebuilt ,it is recommended to replace the entire compressor. If there was a major internal compressor failure the entire system must be inspected for debris(metal from internal compressor components).After an internal compressor failure, it is  recommended to replace the A/C condenser(Specially if it is a modern Parallel Flow type) and the drier, to avoid contamination of the brand new air conditioning compressor. Also, the system should be flushed to avoid contamination.

Where can I Get my auto ac Compressor Replaced?

If you need assistance replacing the a/c compressor in your vehicle Call Us Today ! Auto A/C Repair LLC. operates a mobile air conditioning repair shop in Miami. Contact Us if you need to check any auto a/c compressor failure symptoms. One of our ASE certified mechanics will take care of your vehicle. We offer 1 Year Warranty on Parts and Labor.

How much does car a/c condenser replacement cost ?

Car a/c condenser replacement cost

Written by admin on . Posted in ac condenser installation, Auto A/C Repair near me, auto ac condenser repair near me, Uncategorized.

Car a/c condenser replacement cost

How much does a car a/c condenser replacement cost will depend on the labor time and the price of the a/c condenser. The easiest to access auto a/c condensers will be on the lower end of the price range.

The price of the car a/c condenser replacement will depend on the condenser design and the manufacturer. Original Equipment Manufacturer a/c condenser will be on the higher end of the price range while Aftermarket condensers will be on the lower end of the price range.

Car A/C condenser price range.

Parts price difference will be mostly determined by the origin of the component. OEM are usually more expensive than aftermarket components. Different a/c condenser technology will impact the price. Newer designs tend to be more expensive than older designs.

A/C Condenser Cost : the price range is between $100 and $600 and will depend on the manufacturer ,make and model of the vehicle as well as the system type. Light and medium duty components are usually cheaper than heavy duty and off-road construction equipment a/c systems.

Car A/C condenser replacement labor estimates

Labor Price:  Labor costs are estimated between $190 and $570

Vehicle Make and Model Condenser replacement

2017 Chevy Truck Suburban 5.3L

Remove and Replace labor time

*Does Not Include: Refrigerant Recovery or Evacuate & Recharge AC System.

2.2 Hours (according to Alldata Repair)

Can I Drive with an A/C condenser problem

Driving with a damaged condenser usually will not affect the vehicle’s engine operation. However, a severed restricted condenser coil may affect the flow of air used to cool down the engine and may cause an engine overheating condition. Leaking condenser will cause a low refrigerant low a/c oil condition and will allow the intrusion of air ,moisture and dirt into the a/c system. This condition will increase the complexity of the repair and the price.

Auto A/C Repair Near me in Miami.

Call Today if you need assistance repairing, replacing or doing maintenance to the a/c condenser in your vehicle. We have a mobile repair shop with ASE certified A/C mechanics near you in Hialeah, Miami Lakes, Hialeah Gardens, Doral and other areas in Miami-Dade County.

Car A/C condenser test near me

Car A/C condenser test near me

Written by admin on . Posted in A/C Performance Test, A/C system diagnosis test, ac condenser installation, Auto A/C Repair near me, auto ac condenser repair near me, Car A/C Condenser test near me.

Car A/C Condenser test near me.

To know if a car a/c condenser is working properly the a/c condenser test can’t just be reduced to a leak test. The automotive air conditioner condenser must be tested for their heat exchange capacity. A comprehensive condenser coil test must include a detailed visual inspection to discover any defect or damages that could negatively affect the rate of heat rejection between the superheated refrigerant from inside the vehicle and the outside ambient air going through the condenser coil.

How to get colder air at the ac vents by improving the condenser heat rejection capacity.

A clean, well maintained car a/c condenser parallel-flow design will give the coldest air possible at the inside cabin vents if it is functioning according to manufacturer specifications. For the condenser to work  at 100% efficiency it must be able to have all the built-in manufacturer improvements working as efficiently as possible.

A/C condenser corrosion will reduce the performance of the condenser. Corrosion, road debris or surface restriction on the condenser surface only means less working surface area for the heat exchange and condensation to happen. Any bent or missing fins will decrease the rate of heat exchange between the refrigerant and the outside ambient air ,creating an increase overload on the a/c compressor and increasing the overall head pressure of the air conditioning system. The automotive condenser is in most cases integrated on the front of the vehicle and uses outside ambient air as the medium into which heat is rejected .Any decrease in the volume of air flow through the coil will impact the condensation and subcooling process. Proper condenser fan assembly operation, condenser perimeter seal installation, and fan shroud is vital to the auto air conditioning system.

 To improve the efficiency of the condenser and to make it smaller and less heavy ,the surface area of the auto a/c condenser has been extended with fins. Manufacturers have improved the designs of old inefficient condenser with new technologies that increase considerably the heat rejection rate of the automotive condenser. By improving the quality of the aluminum, the number of fins and internal refrigerant passages design the condensation happens closer to the outside ambient temperature. The new a/c condenser parallel-flow design plates and fins are bonded or soldered to increase heat transfer and to eliminate any contact resistance ( air gaps) that will reduce heat transfer. Headers at the inlet and outlet of the heat exchanger are also bonded to the plates through soldering.

The perfect automotive a/c condenser

A perfect condenser would condense the refrigerant at the same temperature as the ambient. The perfect condenser is not practical to be installed on the front of a vehicle inside the engine compartment, because it would be too large to reach this kind of efficiency. Our ASE certified mechanics can get you as close as possible to a perfect condenser operation by doing a condenser test ,maintenance or condenser replacement. Call Us today ! We have a mobile auto a/c shop operating in Hialeah, Miami Lakes, and Doral.

auto air conditioning repair

Auto Air Conditioning Repair

Written by admin on . Posted in ac condenser installation, Auto A/C Repair near me, auto ac condenser repair near me.

Auto Air Conditioning Repair

Major Auto air conditioning repairs could be avoided or delayed if some components of the air conditioning system are well maintained and operating at 100 % efficiency.

Car Air Conditioning condenser location

The air conditioning condenser is a heat exchanger like a radiator. It is usually located in front of the vehicle. Other automotive air conditioning designs could have the a/c condenser positioned below the radiator ,on the side of the vehicle or on the roof of the cab.

Automotive air conditioning Repair

The modern design air conditioning condenser cannot be flushed or repaired for leaks. If the condenser is internally contaminated with debris from a compressor failure, stop leak sealer or desiccant bag ruptures, the condenser must be replaced with a new efficient design condenser to ensure a longer life of the air conditioning compressor, and the best performance out of the a/c system.

Auto Air conditioning Condenser Installation

The auto air conditioning operation will be impacted by the condenser design type installed. When replacing the ac condenser, it is vital for the auto air conditioning peak performance to have the fan assembly installed according to manufacturer specifications. Condenser fan assembly ,fan clutch and fan shroud must be replaced if they are suspected of being underperforming or damaged.

The auto air conditioning longevity depends on the proper operation of the ac condenser. The A/C system must be refrigerant charged (Freon) according to specification and the refrigerant must comply at least with the current purity standards. After the condenser is replaced the system must be oil balanced to compensate for the oil loss that goes inside the old condenser coil. The type of oil used, and the exact amount of oil is critical to ensure the best auto air conditioning system performance.

Forced Air and Ram Air automotive system.

The Parallel Flow air conditioning Condenser is the most efficient automotive design currently available and it has considerably improved the automotive cabin interior comfort, but It cannot rely only on the outside ambient natural air flow and temperature to achieve the task of desuperheating, condensing and  subcooling that happens along its coil passages and fins. It is  imperative that a condenser fan assembly forces the right amount of air through the condenser and at the right speed to help with these heat exchange process between the superheated refrigerant from the vehicle cabin and the outside ambient air.

Auto Air conditioning system and Engine Overheating

Just because the engine temperature isn’t elevated, doesn’t mean that the fan is working properly. The fan operation should be double checked with the impact of the fan assembly on the ac system in mind and not only the engine cooling system operation. Just because the fan is turning, and the engine is not showing signs of overheating condition it doesn’t necessarily mean that is turning fast enough for the proper operation of the air conditioning system. Poor fan clutch performance would increase the overall head pressure of the a/c system and may develop leaks from any connection of the hvac lines or compressor main seals.

Auto Air conditioning Repair and maintenance

Depending on the conditions the vehicle is driven the auto air conditioning condenser may need periodically scheduled maintenance.

  • The condenser coil must be clean
  • Free from road debris ,leaves and dirt
  • The condenser coil cannot properly operate with missing or bent fin.
  • Aftermarket modifications of the bumper, front grille and fresh air intakes affect the a/c condenser operation.
  • Aftermarket fan clutch or condenser fan assemblies out of specification must be corrected

Auto A/C Repair LLC. is here to help with any automotive air conditioning need.

Call Us Today ! We have auto air conditioning specialist near you to help you repair, replace, or diagnose any issues with a/c system operation in your vehicle.

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ac auto repair shops near me

ac auto repair shops near me

Written by admin on . Posted in ac condenser installation, Auto A/C Repair near me, auto ac condenser repair near me.

ac auto repair shops near me

Auto A/C Repair LLC brings the entire mobile shop right to your home or office. We have ASE certified auto ac repair mechanic near your area in all Miami-Dade County.

Better A/C Auto Condenser Repairs

A/C condensers are in charge of reducing refrigerant temperature so the entire auto AC system chills out. A well maintained or brand new more efficient installed condenser will improve the overall performance of the automotive air conditioning system. By ensuring the most efficient possible operation of the car ac condenser we are extending the life expectancy of the ac compressor and the coldest air flow possible out of the vents in the vehicle.

Mobile AC Repair Shops Outdated Condenser Designs Replacement

The Parallel auto ac flow condenser (PFC) is the most efficient style of condenser for heat transfer because the fins stay in contact with tubes and refrigerant can flow thorough multiple tubes at the same time. This design provides the best possibility for the refrigerant to release heat.

Condenser designs have changed over the years, but there have been 3 primary types.

  • Tube and fin Condenser (TFC)
  • Serpentine Tube Condenser (STC)
  • Parallel Flow Condenser (PFC)

AC Automotive Condenser Repair and Installation Near Me

When servicing an A/C system it is important to know the type of condenser the vehicle has as well as the type it is being replaced with. Less efficient car ac condenser should be replaced with new more efficient designs. The purity of the aluminum and the number of fins per inch should closely be taken into consideration. The heat exchange properties could be improved greatly by taking these factors into consideration. The more efficiently the condenser is operating the less effort must be made by the compressor to operate and cool down the interior of the vehicle. A  condenser that lowers the overall temperature and pressure of the vehicle’s ac system is preserving the quality of the compressor oil and proper lubrication.

Auto A/C Shop Repair Mobile Service Near Me

Call Us Today ! Get your car a/c condenser updated and replaced by an a/c certified mechanic near you.

 

How cold should the car ac be

How cold should the car ac be

Written by admin on . Posted in A/C Performance Test, A/C system diagnosis test, Auto A/C Repair near me.

How cold should the car ac be

The car ac should be as cold as the manufacturer design specifications according to the heat load, humidity, and other conditions of the vehicle at the time of the performance test. There is a relationship between Humidity, ambient air temperature, pressures and the type of refrigerant used in the auto a/c system that will ultimately dictate what the center duct air temperature in your car should be. In this chart  of Relative humidity/ambient air temperature/pressure for r134a we can determine what should be the car ac temperature at the vents. If the vehicle is under these specific conditions of ambient outside air temperature and humidity and the Center Duct air temperature is not close to these values, there is a problem with the car a/c system that must be fixed.

Relative Humidity

Ambient Air Temp (F)

Max Gauge Pres Low Side (psi)

Max Gauge Pres High Side (psi)

Center Duct Air Temp (F)
 

40%

70

37

260

48

80

37

305

54

90

42

370

61

100

49

395

66
 

50%

70

37

275

52

80

39

320

57

90

46

375

64

100

55

430

72
 

60%

70

37

290

54

80

42

340

48

90

49

390

68

100

60

445

79

Temperature /Humidity/Pressure Relationships for R134a.

Do you need assistance checking your auto ac system up ?

Auto A/C Repair LLC. will bring a complete auto ac repair center right to your home or office. ASE certified auto ac mechanics will take care of your car a/c system.

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Car AC stopped cooling suddenly

car ac stopped cooling suddenly

Written by admin on . Posted in A/C Performance Test, A/C system diagnosis test, Auto A/C Repair near me.

Car AC Stopped Cooling Suddenly

This is a fast step by step guide on how to locate what is preventing the operation of the a/c system in your car. If the A/C in your car stopped cooling suddenly ,by knowing the a/c system pressure readings you can determine what component is not operating properly and replace it.

Step by Step car a/c diagnostic

 

Car A/C system suddenly stopped operation.

For the auto A/C system to operate we need the major air conditioning components to operate properly. When the a/c stop cooling suddenly we need to follow a logical diagnostic process to get to the cause of the a/c malfunction as fast and efficiently as possible. We’ll be looking to gather at least this useful information:

  • Exactly what is the concern.
  • When did the a/c fault happen ?
  • How often ?
  • Conditions of the vehicle at the time of the a/c fault.

 

Exactly what is the concern ? Is the auto ac not cooling enough or the cooling capacity has decreased. This category will lead us into a more specific area of the air conditioning system. Is the air coming out from the vents or there is no air at all blowing out from the a/c ducts ?

When did the A/C fault happen ? The approach will be different if the a/c fault only happens during the night or day and specific what part of the day or night. The ambient temperature will vary and the heat load on the car a/c system will be different.

How often ? Is the first time or is the problem repeating and how often? The more specific the information we get the easier the troubleshooting process will be.

 

Get your car’s A/C  system checked up Today.

For all Auto A/C Repairs Call Us 

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Evacuation and Auto AC system air contamination

Evacuation and Auto A/C system air contamination.

Written by admin on . Posted in A/C Performance Test, ac evacuation and recharge, Air conditioning refrigerant, Auto A/C Repair near me.

Evacuation and Auto A/C system air contamination.

Every time the auto A/C system is opened for a component replacement or any other type of service the system must be properly evacuated to avoid air contamination. Pulling a deep vacuum will ensure that all the ambient air that went inside the system while it was opened will be evaporated out of the system.

The negative impact of air contamination on the ac system will be noticed right away. Some of the signs of air contamination are noisy compressor operation and decreased overall auto ac performance. The air can’t be condensed inside the air conditioning condenser and only occupies the space of the refrigerant making the condenser less efficient and not allowing the process of de-superheat, condensation and subcooling that happens in the a/c condenser.

Auto A/C system Air contamination field test:

With 0% air contamination

High Side :165 PSI

Low Side: 32 PSI

Condenser temperature differential:38 Degrees

 

With 7.7 % Air Contamination

High Side : 200 PSI

Low Side: 31 PSI

Condenser temperature differential : 65 degrees

 

With 18.9% Air contamination

High Side:400 PSI

Low Side 45 PSI

Condenser temperature differential 102 Degrees

 

What damages could cause the air contamination in the car ac system.

Auto A/C system air contamination rises the overall pressure in the system. Higher than normal pressures will force the ac compressor. Higher pressures cause higher temperature that could change the oil viscosity and properties. A/C system air contamination will keep the condenser fan assembly operating at maximum capacity because of the inefficiencies of the condenser to change the refrigerant from vapor to liquid.

 

How to check for auto ac system air contamination ?

A refrigerant identifier can be used to quickly check for air contamination and refrigerant cross contamination.

 

Do you need assistance checking your auto ac system for air contamination?

Auto A/C Repair LLC. provides auto ac repairs near your area. Call Today to have one of our ASE certified mechanics check your air conditioning system for air or other contaminants in your vehicle’s ac system. Get auto ac system properly evacuated and recharge according to manufacturer specifications.

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Weak air flow from ac vents in car

Weak air flow from ac vents in car

Written by admin on . Posted in A/C Performance Test, Air conditioning air flow, Auto A/C Repair near me, auto ac cabin air filter, auto ac hvac box maintenance, evaporator core maintenance.

Weak air flow from a/c vents in car

Weak air flow from a/c vents in a car could be caused by:

  • Underperforming A/C Blower motor
  • Restricted in cabin air filter
  • Restricted a/c evaporator core
  • Auto a/c system low on refrigerant charge(Freon)
  • Faulty Expansion device
  • Incorrect refrigerant charge after service
  • A/C system contaminated with moisture.
  • Auto A/C compressor operating constantly
  • ECU cycling control bypassed
  • A/C cycling control switches bypassed
  • Evaporator temperature sensor malfunction
  • In cabin temperature sensor malfunction.
  • A/C ducts restricted with debris
  • A/C ducts flaps partially closed

How much air should be coming out of vents ?

The amount of air that should come out from the vents will depend on the settings the driver has selected. In Automatic Temperature Control systems (ATC) the driver can choose a given temperature  and have this temperature setting maintained by the a/c and heater control system.

This Fully automatic systems usually control most of the specific functions of mode operation, temperature control, blower speeds and heater temperature control. The system will automatically maintain the desired temperature and quantity of air for each mode  and will route the airflow according to the need.

Why is my vent blowing weak air out.

One of these could be the reason why the vent is not blowing out enough air:

  • Fuses, fusible links, and wiring
  • Refrigerant charge and compressor operation
  • Coolant level
  • Heater core
  • Evaporator core
  • Blower motor control module
  • ECU
  • ECM
  • BCM
  • PCM
  • Ambient temperature sensor
  • Sun Load Sensor
  • Coolant temperature sensor.

The proper function of the ATC depends upon the electrical inputs of several sensors. The programming that enables the ECM  to provide control of the system naturally tells the engine computer how to interpret these signals. The ambient temperature sensor is located just behind the grille outside the vehicle. Its job is to sense the outside air temperature and to adjust the ATC accordingly. In cold outside temperature the a/c compressor may be blocked to prevent ac compressor damage due to lack of proper internal oil lubrication.

The sun load sensor is mounted on top of the instrument panel. It senses the intensity of sunlight and adjusts the ATC to meet the demand.

Coolant temperature sensor. Its signal may come to the programmer directly, or be communicated to the programmer by the electronic control module (ECM).

How to unclog weak air flow from ac vents in a car

Poor air flow from vents in a vehicle could be related to any of the issues mentioned above. With the right tools and training the vehicle could be operating up to specifications in no time.

Do you need assistance with a Weak air flow from ac vents in car issue ?

We have ASE certified  auto a/c mechanics near you. We can take care of any problem related to the a/c system that your vehicle may have. Call Us Today ! We service Miami-Dade County areas, Hialeah, Doral, Miami Lakes, Hialeah Gardens, Medley.

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