Check Engine Light On? Get Accurate Diagnostics & Expert Repairs at Sergeant Clutch - Is your check engine light, battery light, or ABS light on? Don’t guess—know for sure with a professional engine diagnostic service from Sergeant Clutch Certified Engine & Transmission Repair Shop in San Antonio, TX. Since 2003, we’ve helped drivers across San Antonio solve engine problems quickly, accurately, and affordably.
San Antonio's Trusted Engine Diagnostic & Repair Shop - Your vehicle’s engine is a complex system of sensors, solenoids, and computers working together. When something goes wrong, it can affect everything from fuel efficiency to driveability—or even leave you stranded. At Sergeant Clutch, our certified technicians use advanced diagnostic tools to uncover the root of the problem—not just the symptoms. We don’t guess—we test.
Our Engine Diagnostic Services Include:
- Check Engine Light Diagnosis
- OBD-II & Computer System Scanning
- Fuel System Testing
- Ignition & Spark System Checks
- Sensor & Switch Testing
- Vacuum & Emissions System Diagnostics
- Cooling System Inspection
- Performance Analysis & Road Testing
Once we identify the issue, we’ll walk you through your repair options, pricing, and timing—no pressure, just honest advice.
Fix It Now. Pay Later. Financing and Payment Plans for Engine Repairs | Apply Today | All Credit Types Welcome
What Causes the Check Engine Light? Modern vehicles are controlled by onboard computers that monitor engine performance using a network of sensors. If a problem is detected, the computer logs a trouble code and illuminates a dashboard warning light such as:
- Check Engine Light
- Service Engine Soon
- Battery Warning Light
- ABS Brake Light
Common diagnostic trouble codes involve:
- Mass Airflow Sensor (MAF)
- Oxygen Sensor (O2 Sensor)
- Throttle Position Sensor (TPS)
- Coolant Temperature Sensor
- Crankshaft Position Sensor
- Camshaft Position Sensor
- MAP Sensor
- Ignition Coil or Spark Issues
- Evap System Leaks
- Fuel Injector Failures
Don’t ignore warning lights. A small issue today can turn into expensive repairs tomorrow. Get peace of mind with a diagnostic check from Sergeant Clutch.
Why Choose Sergeant Clutch for Engine Diagnostics in San Antonio?
- Experienced & Certified Mechanics
- Advanced Diagnostic Equipment
- Clear Explanations & Repair Options
- Affordable Pricing & Financing Available
- FREE Towing with Major Repairs
- Trusted Since 2003 by Local Drivers & Military Families
Whether you're dealing with rough idling, poor acceleration, engine misfires, or just a glowing dash light—we’ll get to the bottom of it and fix it right. Call Now to Schedule an Engine Diagnostic! When you see the Check Engine Light or any other warning indicator, don’t wait. Bring your vehicle to Sergeant Clutch Certified Engine & Transmission Repair Shop in San Antonio, TX for fast, accurate, and affordable diagnostics and repair services.
