Accurate Engine Diagnostics in Warren, MI
A warning light means your car’s computer detected a fault. Don't throw money at random parts—our advanced scanner tools and ASE master technicians pinpoint the exact root cause fast.
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What Is Your Dashboard Telling You?
Solid Check Engine Light
Indicates a non-critical sensor or emissions fault like an O2 sensor, loose gas cap, or EVAP leak. Needs attention before fuel economy suffers.
Flashing Check Engine Light
A severe engine misfire sending unburnt fuel into the exhaust system, which can melt expensive catalytic converters. Pull over and call us immediately!
Rough Idle & Stalling
Intermittent misfires, vacuum leaks, or bad mass air flow sensors cause poor acceleration and sudden stalling at stoplights.
Diagnostics & Electrical Testing We Provide
Advanced computer scanning, electrical waveform analysis, and root-cause troubleshooting by ASE certified master technicians.
Computer DiagnosticsOBD-II Computer Code Scanning
Full module scan across ECM, TCM, and ABS for active and pending diagnostic trouble codes.
Charging SystemBattery & Alternator Electrical Test
Digital battery conductance test, alternator charging voltage check, and starter draw analysis.
Sensor WaveformsEngine Sensor & O2 Testing
Live data scope verification to detect malfunctioning O2 sensors, MAF meters, and throttle position sensors.
Vacuum & EmissionsEVAP & Smoke Leak Test
High-density smoke test finds microscopic vacuum leaks, cracked vapor hoses, and stuck purge valves.
Ignition & SparkIgnition Misfire Diagnosis
Identify failing ignition coils, fouled spark plugs, and clogged fuel injectors stopping smooth combustion.
Emissions ComplianceCatalytic & Emissions Repair
Clear catalytic converter efficiency faults (P0420/P0430) and resolve exhaust sensor errors permanently.
Check Engine & Diagnostics FAQs
Answers to the diagnostic questions Warren drivers ask us most.
STOP GUESSING. GET ANSWERS TODAY.
Call First Choice Muffler & Brake now or submit the online form for fast, honest engine diagnostics.
CALL SHOP: (586) 757-7203