AC Repair & Air Conditioning Service in Tempe, AZ

AC Repair & Air Conditioning Service

When Arizona temperatures climb, a properly working car A/C isn’t just a luxury—it’s essential. If your air conditioning is blowing warm, taking too long to cool down, making unusual noises, or simply isn’t keeping up with the heat, American Five Star Auto Repair & Transmission can help.

Our ASE-certified technicians provide complete automotive A/C diagnostics, service, and repair for today’s increasingly complex climate-control systems.

Don’t Just Add Refrigerant—Find Out Why It’s Low

If your A/C isn’t cold, adding refrigerant isn’t always the answer.
An A/C system that is low on refrigerant may have a leak. Poor cooling can also be caused by a compressor problem, an electrical failure, a pressure sensor, a cooling fan, an expansion valve, a condenser, an evaporator, a blend-door problem, or another system fault.

At American Five Star, we diagnose the problem before recommending the repair.
Our technicians test the system to determine what’s preventing it from cooling properly so you can make an informed repair decision.

Signs Your Vehicle’s A/C Needs Attention

Have your A/C system inspected if you notice:

Warm or hot air coming from the vents
A/C isn’t as cold as it used to be
System takes too long to cool the vehicle
A/C works while driving but gets warm at idle
Cooling comes and goes
Weak airflow from the vents
Unusual noises when the A/C is operating
Unusual odors from the vents
Water leaking inside the vehicle
Compressor repeatedly cycling on and off
A/C or climate-control warning messages

In Arizona, a marginal A/C system can quickly become noticeable once outside temperatures reach their summer extremes.

Complete Automotive A/C Services

A/C System Diagnostics

We inspect and test your vehicle’s air conditioning system to determine why it isn’t cooling properly. Depending on the problem, diagnosis may include checking system pressures, vent temperature, refrigerant charge, compressor operation, electrical controls, cooling fans, sensors, airflow, and climate-control operation.

Refrigerant & A/C Service

The correct refrigerant type and charge are critical to proper A/C operation.
American Five Star services vehicles using common automotive refrigerants, including R-134a and R-1234yf, in accordance with vehicle and A/C system requirements. We use the correct service procedures rather than simply adding refrigerant and hoping the problem goes away.

A/C Leak Detection

Refrigerant doesn’t normally disappear from a properly sealed system. If the system is low, we’ll work to determine where the refrigerant is going. Leaks may occur at hoses, seals, fittings, condensers, evaporators, compressors, service ports, or other A/C components. Finding the source of the leak is an important part of repairing the system correctly.

A/C Compressor Diagnosis & Repair

The compressor is a major component of your vehicle’s air conditioning system, but a compressor that isn’t operating doesn’t automatically mean the compressor itself has failed. Electrical problems, sensors, pressure conditions, control modules, wiring, or other system faults can prevent the compressor from operating. That’s why proper diagnosis comes before replacement.

Condenser & Evaporator Service

The condenser releases heat from the refrigerant while the evaporator removes heat and moisture from the air entering the passenger compartment. Damage, leaks, restrictions, or airflow problems involving either component can significantly reduce cooling performance. Our technicians can evaluate these components as part of a complete A/C diagnosis.

Refrigerant & A/C Service

The correct refrigerant type and charge are critical to proper A/C operation.
American Five Star services vehicles using common automotive refrigerants, including R-134a and R-1234yf, in accordance with vehicle and A/C system requirements. We use the correct service procedures rather than simply adding refrigerant and hoping the problem goes away.

Electrical & Climate-Control Diagnostics

Modern automotive A/C systems are increasingly computer-controlled. Depending on the vehicle, the climate-control system may rely on:

Temperature sensors
Pressure sensors
Control modules
Electronic actuators
Blend doors
Blower motors and controls
Relays and wiring
Cooling fans
Computer-controlled compressors
Professional diagnostic equipment allows us to evaluate these systems instead of guessing which component is causing the problem.

Cabin Airflow & Cabin Filter Service

Sometimes the A/C system produces cold air but doesn’t move enough of it into the passenger compartment. A restricted cabin air filter, blower motor issue, airflow door problem, or other ventilation issue can reduce A/C performance.

We inspect the system to determine whether the concern is refrigeration, airflow, electrical—or a combination of problems.

A/C Performance Testing for Arizona Conditions

An A/C system that seems acceptable on a mild morning may struggle badly during a 110-degree Arizona afternoon. We evaluate your system’s cooling performance, vent temperatures, operating pressures, and related components to determine whether it is performing as it should.

Our goal isn’t simply to make the air coming from the vents feel cooler in the shop. We want your A/C prepared for Arizona.

Why Choose American Five Star for A/C Service?

Diagnose First: We don’t believe in guessing or automatically replacing expensive components.
We use professional diagnostic equipment and proven testing procedures to determine what’s actually causing the problem.

Clear Recommendations: We’ll show you what we find, explain the problem, and discuss your repair options before moving forward.

ASE Certified Technicians: Today’s A/C and climate-control systems combine refrigeration, electrical systems, computers, sensors, and mechanical components. Our technicians have the experience and equipment to evaluate these systems properly.

Your Dealer Alternative: You don’t have to return to the dealership for professional A/C diagnostics and repair. American Five Star provides the technology, experience, and service needed to diagnose and repair modern automotive climate-control systems right here in Tempe.

Don’t Wait Until the First 110° Day

If your A/C isn’t as cold as it used to be, that’s often the first indication that something needs attention. Having the system checked before the hottest part of the Arizona summer can help identify developing problems before you’re left driving without A/C.

Is Your A/C Ready for Arizona?

If your vehicle is blowing warm, cooling slowly, losing airflow, making noise, or doesn’t feel as cold as it should, schedule an A/C inspection and let us find out why.
Diagnose it first. Fix it right. Stay cool.

American Five Star Auto Repair & Transmission
A/C Diagnostics • R-134a & R-1234yf Service • Leak Detection • Compressor Repair • Climate-Control
Diagnostics • Dealer Alternative

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Our Tempe Auto Repair Services

Transmission Repair

Suspension & Steering

A/C Repair

Brake Services

Regular Maintenance

Gas & Diesel Engines

30/60/90K Factory Maintenance Services

Protect Your Vehicle and Maximize Reliability

Following your vehicle’s factory maintenance schedule is one of the best ways to prevent breakdowns, maintain warranty coverage, and extend the life of your car. Learn why scheduled maintenance is essential for long-term vehicle performance and value.

Regular factory scheduled maintenance is critical for keeping your vehicle reliable, safe, and operating at peak performance. Following manufacturer-recommended service intervals helps prevent unexpected repairs, extend vehicle lifespan, and protect your investment.

At American Five Star Auto Repair & Transmission, ASE Certified technicians perform comprehensive maintenance services based on your vehicle’s make, model, mileage, and driving conditions. Scheduled maintenance may include oil and filter changes, fluid services, computer diagnostics, brake inspections, suspension checks, transmission maintenance, cooling system service, tire rotations, filter replacements, battery testing, and complete vehicle safety inspections.

For vehicles still under factory warranty, adhering to the manufacturer’s maintenance schedule helps ensure warranty compliance while maintaining optimal performance and reliability.

By conducting thorough inspections and providing clear maintenance recommendations, American Five Star helps drivers plan for future service needs and avoid costly breakdowns. Regular maintenance not only improves reliability but also enhances vehicle value and longevity.

Wheel Alignment

Proper wheel alignment is key to comfortable, safe and fuel efficient driving. If you feel your steering wheel shaking back and forth or if your car drifts or pulls to one side of the road or the other, it’s likely time for a wheel alignment. American Five Star Auto Repair & Transmission can perform fast wheel alignment services that will maximize tire life, fuel efficiency and overall performance.

Vehicle Inspection Services

Pre-Purchase & Pre-Trip Vehicle Inspections in Tempe, AZ

Whether you are buying a used car or packing up for a long road trip, knowing the true condition of your vehicle gives you peace of mind. At American Five Star Transmission, our certified technicians provide comprehensive vehicle inspections to help you avoid costly breakdowns and make smart, informed decisions.

Certified Pre-Purchase Used Car Inspections

Buying a used vehicle is a major investment, but hidden mechanical issues can quickly turn a good deal into an expensive mistake. Our detailed pre-purchase inspection provides an unbiased evaluation of the car’s current health. We provide you with a clear digital report outlining:

- Immediate Needs: Any critical safety issues or broken components that require urgent repair.
- Upcoming Maintenance: Wearable items like brakes, tires, and fluids that will need attention in the near future.
- Negotiating Leverage: A professional health check gives you the documentation you need to negotiate a fair buying price.

Comprehensive Pre-Trip Inspections

Don’t let a preventable mechanical failure ruin your vacation. Our pre-trip inspection is designed to catch small issues before they turn into major roadside emergencies. Before you head out on a long journey, our team checks all vital systems, including:

- Fluid Levels & Quality: Inspecting engine oil, transmission fluid, coolant, and brake fluid.
- Belts & Hoses: Checking for cracks, leaks, or signs of wear that could cause overheating.
- Brakes & Tires: Ensuring adequate brake pad thickness, even tire wear, and correct tire pressure.
- Battery & Charging System: Testing your battery health so you don’t get stranded far from home.

Drive with Confidence with American Five Star Transmission

- Unbiased Evaluations: We do not sell cars, so our only priority is giving you an honest, objective look at the vehicle’s condition.
- Transmission Specialists: We pay extra attention to the transmission and drivetrain—the most expensive components to fix if they fail.
- Detailed Digital Reports: Receive an easy-to-read breakdown of our findings so you can plan your next steps.

Belts & Hoses

Belt & Hose Replacement Services in Tempe, AZ

The rubber belts and hoses under your hood operate under extreme heat, constant vibration, and high pressure. Over time, this intense environment causes rubber to dry out, crack, and weaken.

If a belt snaps or a hose bursts while you are driving, it can lead to immediate engine failure and thousands of dollars in repairs.

At American Five Star Transmission, we provide expert inspection and replacement services to keep your engine running safely and reliably.

Tune Up & Oil Change

Keeping up with scheduled vehicle maintenance is the easiest way to protect your investment. At American Five Star Transmission, we provide comprehensive care to extend your car’s life by tens of thousands of miles.

From fast oil changes to precision tune-ups, our certified technicians ensure your vehicle runs smoothly, safely, and efficiently.

Premium Oil Change Services

Regular oil changes prevent friction, reduce engine wear, and clear out harmful debris. Our full-service oil change is tailored to your vehicle’s specific manufacturer guidelines and includes:

Premium Oil Options: Your choice of conventional, semi-synthetic, or high-mileage full synthetic oil.
Filter Replacement: Installation of a brand-new, high-quality oil filter.
Fluid Top-Offs: Checking and filling essential fluids under the hood.

Fuel Injection

Fuel Injector Repair & Service in Tempe, AZ

Faulty fuel injectors can lead to hard starts, poor fuel economy, rough idling, engine misfires, reduced power, and overall poor vehicle performance.

At American Five Star Auto Repair & Transmission, our ASE-certified technicians use advanced diagnostic equipment to quickly identify fuel injector problems and recommend the right solution.

Whether your vehicle needs fuel injector cleaning, repair, or replacement, we’ll restore proper fuel delivery to help your engine run smoothly and efficiently. Ignoring fuel injector issues can lead to decreased performance and costly engine damage over time.

If you’re experiencing engine performance problems, check engine light concerns, or difficulty starting your vehicle, trust the experts at American Five Star Auto Repair & Transmission. We’ll accurately diagnose the issue, perform the necessary repairs, and get you safely back on the road as quickly as possible.

Computer Diagnostics

Vehicle Diagnostics & Repair Services

If your check engine light is on, warning lights have appeared on your dashboard, or your vehicle just isn’t running like it should, the team at American Five Star Auto Repair & Transmission is here to help.

Our Diagnostic Process: No Guesswork, Just Proof

We do not believe in guessing or replacing parts that aren’t needed. Our approach saves you time, money, and frustration by finding the root cause of the issue the first time.

Advanced Computer Diagnostics: Pinpointing hidden mechanical and electrical issues.
Factory-Level Scan Tools: Utilizing dealership-grade technology for precise error-code reading.
Digital Testing Equipment: Verifying system health with modern, accurate data tools.
ASE Certified Technicians: Ensuring your vehicle is handled by top-tier, industry-validated experts.

The American Five Star Transparency Promise

We believe you should always be in control of your auto repair decisions. Once our technical diagnosis is complete, we provide a fully transparent review:

See for Yourself: We bring you right into the shop to show you exactly what we found.
Plain English Explanations: We translate complex mechanical jargon into clear, everyday terms.
No Pressure, Clear Pricing: You receive honest recommendations and upfront costs so you can make the best choice for your budget and vehicle.

Ignition Wires & Cables

Professional Ignition Repair & Car Starting Diagnostics in Tempe.

Nothing is more frustrating than a car that will not start. If your engine is cranking slowly, stalling unexpectedly, or refusing to turn over, it may be time for professional ignition repair.

At American Five Star Transmission, we use advanced diagnostic equipment to pinpoint the exact cause of your starting trouble and perform precise repairs to get you back on the road safely.

Advanced Diagnostic Starting Checks

Ignition problems can stem from mechanical wear, electrical failures, or faulty electronic components. We perform a thorough system analysis to ensure an accurate fix the first time. We test and inspect:

The Ignition Switch: Checking for worn mechanical components or loose internal wiring.
The Starter Motor: Testing electrical draw and mechanical engagement with the engine flywheel.
The Vehicle Battery: Measuring voltage and cold cranking amps (CCA) to ensure it holds a charge.

Once we identify the root cause of your starting issues, our certified mechanics deliver high-quality repairs using premium replacement parts.

Coolant Service

Radiator Repair & Cooling System Service in Tempe, AZ

An overheating engine can cause severe, irreversible damage to your vehicle in a matter of minutes. To protect your engine from extreme heat, your radiator and cooling system must remain in peak condition.

At American Five Star Transmission, we provide comprehensive cooling system diagnostics, maintenance, and repairs. Whether you need a simple fluid flush or a complete radiator replacement, our certified technicians will keep your engine running cool.

Exhaust Systems/Catalytic Converter

Exhaust System Repair & Catalytic Converter Service in Tempe, AZ

Your car’s exhaust system is one of its hardest-working components. It is responsible for directing toxic fumes away from the cabin, dampening engine noise, and converting harmful gasses into safer emissions.

Driving with a damaged exhaust is a safety hazard and can cause your vehicle to fail state emissions testing. At American Five Star Transmission, we provide complete exhaust system diagnostics and repairs to keep your vehicle quiet, efficient, and safe.

Signs You Need Exhaust or Catalytic Converter Repair

Exhaust issues rarely stay hidden. Bring your vehicle in for a professional inspection if you notice any of these common warning signs:

Loud Engine Noises: A deep rumbling, popping, or hissing sound, especially during acceleration, indicates a muffler or pipe leak.
Check Engine Light: Modern vehicles use oxygen sensors to monitor exhaust efficiency; a fault often points to catalytic converter trouble.
Dropping Fuel Economy: A restricted or leaking exhaust system disrupts engine backpressure, causing your car to burn more gas.
Vibrations & Shaking: A shaking gas pedal, steering wheel, or floorboard often signals a broken exhaust hanger or a severe system restriction.
Pungent Odors: Smelling sulfur (a rotten egg smell) or heavy exhaust fumes inside the cabin is a dangerous sign of a failing catalytic converter or exhaust leak.

Complete Muffler, Exhaust, & Emission Services

We repair and replace all components of your vehicle’s emission network to ensure optimal performance. Our services include:

Catalytic Converter Replacement: Installing high-quality, emissions-compliant converters to clear check engine lights and reduce pollution.
Muffler & Resonator Repair: Replacing rusted or damaged mufflers to eliminate loud exhaust noise and restore quiet operation.
Exhaust Manifold & Pipe Service: Fixing cracked manifolds and leaking pipes to prevent toxic carbon monoxide from entering your car.
Oxygen (O2) Sensor Replacement: Swapping out faulty sensors to restore proper air-fuel ratios and maximize your miles per gallon (MPG).

Steering & Suspension

Improve Safety, Comfort, and Vehicle Control

Your vehicle’s steering and suspension systems are essential for safe handling, ride comfort, and overall driving performance. Learn the warning signs of steering and suspension problems and why timely repairs can prevent costly damage.

The steering and suspension systems work together to provide stability, control, and a smooth ride. If your vehicle pulls to one side, feels unstable, produces clunking noises over bumps, or experiences loose or stiff steering, these are signs that professional inspection may be needed.

At American Five Star Auto Repair & Transmission, ASE Certified technicians diagnose and repair a wide range of steering and suspension components, including steering racks, tie rods, ball joints, control arms, shocks, struts, sway bars, bushings, and power steering systems. Whether your vehicle uses hydraulic or electric power steering technology, proper diagnosis is essential for safe and accurate repairs.

Delaying steering or suspension repairs can lead to uneven tire wear, compromised handling, reduced braking performance, and more expensive repairs in the future. A comprehensive inspection can identify worn or damaged components before they affect vehicle safety and reliability.

Diesel Engines

Diesel Engine Diagnostics, Repair & Replacement Services

From advanced diesel diagnostics to complete engine replacements, American Five Star Auto Repair & Transmission provides expert diesel engine repair services backed by ASE-certified technicians, factory-level diagnostic equipment, and a nationwide warranty.

Diesel engines are built for power, durability, and performance, but when problems arise, accurate diagnosis is critical. American Five Star Auto Repair & Transmission specializes in diagnosing and repairing diesel engine issues for light, medium, and heavy-duty diesel vehicles using factory-level diagnostic tools and ASE-certified technicians.

Common diesel engine problems include clogged fuel injectors, turbocharger failures, blown head gaskets, electrical system faults, cooling system issues, and performance-related drivability concerns. Through advanced testing and diagnostic procedures, technicians identify the root cause of engine problems before recommending repairs, helping vehicle owners avoid unnecessary costs.

When severe engine damage or catastrophic failure occurs, American Five Star offers complete diesel engine rebuilds and replacements.

Services include:

removing the damaged engine
evaluating associated systems
installing high-quality replacement or remanufactured engines

Critical systems such as cooling, exhaust, fuel delivery, and electronics are properly inspected and calibrated to ensure long-term reliability, performance, and towing capability.

To provide additional peace of mind, diesel engine services are backed by a nationwide 24-month/24,000-mile warranty, helping customers protect their investment and maintain confidence on the road.