30 Years Serving San Fernando Valley|Mon-Fri: 9:00am – 6:00pm
Trusted Since 1993(818) 898-1573
Master Technician Workshop
Complete Automotive Care & Diagnostic Specialties
From elusive electrical faults to complete brake rebuilds and scheduled maintenance, our experienced master technicians keep your vehicle running smoothly across the San Fernando Valley.
Comprehensive Scan
Diagnose My Vehicle
Complete bumper-to-bumper digital evaluation for unexplained noises, vibrations, or driveability issues.
Key Procedures:
- Digital multi-point vehicle health scan
- Road test assessment by Master Technician
- Detailed technician summary of findings
Standard:Full Vehicle Multi-Point • Live Sensor Waveforms
Turnaround:45-60 Mins
Detailed Diagnostic Assessment
OEM Scanner
Check Engine Light Diagnosis
Pinpoint active and historical DTC trouble codes across powertrain, emissions, and chassis modules.
Key Procedures:
- Diagnostic trouble code (DTC) interrogation
- Freeze-frame sensor data review & verification
- Direct component circuit integrity testing
Standard:OBD-II • Live Telemetry • CAN-Bus Analysis
Turnaround:45-60 Mins
Live Sensor & Code Analysis
Misfire Isolation
Ignition System Diagnosis
Troubleshoot rough idling, hesitation, and engine misfires with ignition coil and secondary circuit testing.
Key Procedures:
- Ignition coil resistance & output testing
- Secondary ignition spark duration check
- Control module signal validation
Standard:Oscilloscope Waveform • KV Arc Voltage
Turnaround:1 – 2 Hours
Precision Secondary Circuit Testing
Drivetrain Logic
Transmission Diagnosis
Assess shift hesitation, slipping gears, and hydraulic line pressures on automatic, manual, and CVT units.
Key Procedures:
- Transmission control module data logging
- Fluid level & burnt particulate condition check
- Solenoid valve activation & pressure test
Standard:TCM Data Stream • Hydraulic Line Pressure
Turnaround:1 – 2 Hours
Comprehensive Drivetrain Evaluation
Friction Service
Brake Pad Replacement
Upgrade or restore stopping power with premium ceramic or OEM-spec semi-metallic friction pads.
Key Procedures:
- Removal of worn pads & caliper inspection
- Caliper slide pin cleaning & high-temp lubrication
- Hardware replacement & bedding-in road test
Standard:Ceramic / Semi-Metallic • Low-Dust Formulas
Turnaround:1 – 1.5 Hours
OEM-Quality Friction Parts
Smooth Braking
Brake Rotor Replacement
Replace grooved, warped, or undersized brake discs with precision-balanced rotors to eliminate pedal pulsation.
Key Procedures:
- Rotor runout measurement & hub rust removal
- New premium mill-balanced rotor installation
- Torque specification verification to OEM standards
Standard:Mill-Balanced • High-Carbon Alloy
Turnaround:1.5 – 2 Hours
Precision Mill-Balanced Rotors
Drum Systems
Brake Shoe Replacement
Complete rear drum brake friction renewal including hold-down springs, adjusters, and wheel cylinders.
Key Procedures:
- Drum drum micrometer measurement & cleaning
- Brake shoe and hardware spring kit renewal
- Star wheel adjuster setup & parking brake sync
Standard:OEM Drum Specs • Calibrated Spring Tension
Turnaround:1.5 – 2 Hours
Complete Hardware & Spring Renewal
Hydraulic Safety
Brake System Diagnosis
Diagnose spongy brake pedals, ABS fault lights, fluid leaks, and uneven brake wear patterns.
Key Procedures:
- Hydraulic master cylinder & line pressure check
- ABS computer diagnostic interrogation
- Brake fluid moisture content measurement
Standard:DOT 3 / 4 / 5.1 • ABS Modulator Testing
Turnaround:45-60 Mins
Full Hydraulic System Check
Cabin Comfort
Air Conditioning Diagnosis
Isolate warm blowing air, unusual compressor noises, and climate control electronic faults.
Key Procedures:
- Manifold pressure gauge diagnostic reading
- UV dye & electronic refrigerant leak detection
- Compressor clutch & blend door actuator check
Standard:High & Low Pressure Manifold Analysis
Turnaround:45-60 Mins
Comprehensive Climate System Check
Valley Heat Defense
Air Conditioning Recharge
Deep system evacuation, moisture removal, and precision charge of R134a or modern R1234yf refrigerant.
Key Procedures:
- Deep vacuum evacuation to boil off internal moisture
- PAG compressor lubricant replenishment
- Calibrated gram-accurate refrigerant recharge
Standard:R134a / R1234yf Precision Weight Dispense
Turnaround:1 – 1.5 Hours
Calibrated Refrigerant Recharge
Overheat Protection
Coolant System Flush
Drain contaminated antifreeze and scale buildup, protecting the radiator, water pump, and heater core.
Key Procedures:
- Complete closed-loop chemical flush & back-flush
- Radiator cap & system pressure test for leaks
- Fresh OEM-approved antifreeze refill & air bleed
Standard:OEM Extended Life Coolant • pH Neutralized
Turnaround:1 – 2 Hours
Closed-Loop Chemical Flush
Vital Engine Care
Engine Oil & Filter Change
Premium full-synthetic or blend motor oil change with OEM-grade filter and 30-point vehicle safety check.
Key Procedures:
- Engine oil drain & new OEM-spec filter install
- Top-off of all critical underhood fluids
- Comprehensive multi-point service check
Standard:Full Synthetic Dexos / Euro-Spec Blends
Turnaround:30-45 Mins
OEM-Grade Filter & Fluids
Fuel Efficiency
Spark Plug Replacement
Restore crisp acceleration, smooth idle, and maximum fuel economy with laser iridium or platinum plugs.
Key Procedures:
- Spark plug extraction & combustion deposit inspection
- Electrode gap calibration to factory specs
- Anti-seize application & precision torque setting
Standard:Iridium & Double Platinum • Calibrated Gaps
Turnaround:1 – 2 Hours
Factory-Calibrated Electrode Gaps
Tread Longevity
Tire Rotation
Even out front and rear tire wear patterns, balance ride stability, and inspect remaining tread depth.
Key Procedures:
- Tire pattern repositioning & tread depth gauge check
- Tire pressure adjustment to door jamb specs
- Visual check of brake pads and brake lines
Standard:Cross / Forward Rotation • PSI Calibrated
Turnaround:30 Mins
Even Tread & Pressure Balance
Accessory Drive
Serpentine/Drive Belt
Replace cracked, squealing, or stretched accessory drive belts and tensioner pulleys before they fail.
Key Procedures:
- Belt rib wear gauge evaluation
- Tensioner arm bearing & idler pulley check
- OEM-grade EPDM drive belt installation
Standard:EPDM Polymer Belts • Automatic Tension Check
Turnaround:45-60 Mins
OEM-Grade EPDM Polymer Belts
Engine Critical
Timing Belt Replacement
Prevent catastrophic engine damage by replacing scheduled timing belts, tensioners, and water pumps.
Key Procedures:
- Crankshaft & camshaft timing lock alignment
- New timing belt, hydraulic tensioner & idlers install
- Water pump replacement & fresh coolant fill
Standard:High-Tensile Cord • OEM Timing Kit
Turnaround:3 – 6 Hours
Complete Timing Component Kit
Reliable Cranking
Battery Replacement
Heavy-duty AGM and flooded battery testing and replacement with terminal cleaning and charging system check.
Key Procedures:
- Battery conductance & cranking amp load test
- Terminal corrosion cleaning & anti-corrosion treat
- Battery registration into vehicle ECU if required
Standard:High CCA • AGM & Lead Acid • 12V / 48V
Turnaround:30-45 Mins
High-CCA Battery Testing & Install
Instant Starting
Starter Replacement
Resolve clicking, slow-cranking, or no-start conditions with high-torque starter motors and relay checks.
Key Procedures:
- Starter draw amperage & ignition switch circuit test
- Flywheel ring gear tooth inspection
- New starter motor installation & crank verification
Standard:High-Torque Starters • Solenoid Tested
Turnaround:1.5 – 3 Hours
High-Torque Replacement Units
Fuel Delivery
Fuel Pump Replacement
Replace failing in-tank or high-pressure direct injection fuel pumps causing stalling and loss of power.
Key Procedures:
- Fuel rail pressure drop & flow rate test
- Fuel tank drop / sender access & pump renewal
- Fuel filter replacement & leak safety verification
Standard:High-Pressure Direct Injection (GDI) & Port
Turnaround:2 – 4 Hours
OEM-Quality Fuel Delivery Parts
Injector & Lines
Fuel System Repairs
Service direct fuel injectors, pressure regulators, EVAP purge valves, and fuel rail delivery components.
Key Procedures:
- Fuel injector flow balance & resistance testing
- EVAP smoke test for vapor leak containment
- Fuel line integrity check & seal replacements
Standard:Ultrasonic Cleaning • Rail Pressure Testing
Turnaround:1.5 – 3.5 Hours
Precision Pressure & Leak Testing
Emissions & MPG
Oxygen Sensor Replacement
Restore optimal air-fuel ratios and pass California smog tests by replacing faulty upstream and downstream O2 sensors.
Key Procedures:
- Live O2 voltage switching & heater circuit test
- Exhaust bung thread chase & anti-seize install
- ECU fuel trim reset & catalytic readiness drive cycle
Standard:Wideband & Zirconia • Fast-Response Heater
Turnaround:1 – 1.5 Hours
OEM-Grade Sensor Replacement
CARB Compliant
Catalytic Converter Replacement
Install California CARB-compliant catalytic converters to clear P0420/P0430 codes and meet state emissions standards.
Key Procedures:
- Pre/post converter temperature & backpressure test
- CARB-compliant converter fitment & flange sealing
- Emissions monitor readiness drive cycle test
Standard:CARB Executive Order Certified • High Flow
Turnaround:2 – 4 Hours
CARB-Compliant Emissions Fitment
Chassis Control
Suspension Ball Joint
Eliminate clunking sounds, steering looseness, and tire camber wear by replacing worn upper and lower ball joints.
Key Procedures:
- Ball joint axial & radial play micrometer measurement
- Control arm press-in or bolt-on ball joint renewal
- Castle nut torque & cotter pin safety installation
Standard:Hardened Steel Studs • Sealed Boot Protection
Turnaround:1.5 – 3 Hours
Heavy-Duty Chassis Hardware
Laser Precision
Wheel Alignment
Digital 4-wheel alignment restores straight tracking, stops vehicle pulling, and protects tire tread life.
Key Procedures:
- Computerized 3D sensor target measurement
- Camber, caster, and toe angle precision adjustment
- Steering wheel center angle calibration & road test
Standard:3D High-Definition Laser Targets
Turnaround:1 Hour
3D Computerized Laser Alignment
30 Years of Reliable Valley Service
Every repair includes our comprehensive technician summary, OEM-grade parts, and transparent pricing before work begins.
Transparent Auto Care
Our Diagnostic & Repair Process
No guessing, no upselling. We pair modern computerized telemetry with 30 years of honest San Fernando Valley mechanical experience so you always know what your car needs.
01
SCAN & TELEMETRY
Advanced Computerized Scanning
We connect OEM-grade diagnostic scanners directly to your vehicle's onboard computer to extract live sensor data, trouble codes, and electrical telemetry.
- Powertrain & transmission fault codes
- Live sensor data streaming & fuel trim
- Battery, starter, and charging output check
OBD-II & CAN Bus30-45 Mins
02
DIGITAL EVIDENCE
Thorough Diagnostic Review
Our technicians perform a comprehensive diagnostic review, capturing high-resolution photos and detailed notes of worn or failing components.
- Brake pad wear & rotor condition photos
- Fluid contamination & suspension tests
- Sent directly to your smartphone via SMS/Email
40-Point Service CheckPhoto Verified
03
CLEAR ESTIMATE
Estimate Review & Authorization
We walk you through our findings in plain language. You get an itemized estimate separating urgent safety needs from upcoming routine maintenance.
- Clear parts and labor breakdown
- Prioritized recommendations by urgency
- No repair work begins without your consent
Zero Hidden FeesYour Approval First
04
PRECISION CRAFT
Master Repair & Quality Road Test
Our experienced mechanics execute repairs with OEM or high-grade parts, followed by torque verification and a comprehensive real-world road test.
- Precision torque and system recalibration
- Post-repair scan to confirm code clear
- Validated road test under real Valley driving conditions
Fair Pricing GuaranteeSame-Day Target
30 Years in the Valley
Trusted since 1993
Expert Team
Trained technicians
Transparent Pricing
Clear & honest estimates
Notice a Warning Light or Strange Noise?
Book a comprehensive diagnostic scan today. We will pinpoint the issue accurately and provide photos before any work begins.
Fast & Accurate Booking
Request Your Service Appointment
Reserve your drop-off slot with our master diagnostic technicians in the San Fernando Valley. Transparent digital evaluations with zero surprises.
Book Your Service Appointment
Fill out your vehicle information to reserve your service appointment.
The Roy’s Service Guarantee
30 Years in the Valley
Decades of honest, reliable craftsmanship in the San Fernando Valley.
Transparent, Fair Pricing
Clear explanations and upfront quotes before any work begins.
Friendly, Expert Technicians
Experienced mechanics dedicated to keeping your vehicle running smoothly.
Shop Operating Hours
Mon-Fri: 9:00am – 6:00pm | Sat-Sun: Closed
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