Engine Diagnostics in Lavon, TX

Is your check engine light on? Don’t ignore it. At Eagle Automotive & Transmission Repair in Lavon, we use advanced diagnostic tools to quickly find the problem and recommend the right repair. From minor sensor issues to serious engine troubles, our certified team has the experience to get you back on the road with confidence.



Signs You Need Engine Diagnostics

Bring your car in for a diagnostic check if you notice:

  • Check engine light or warning lights on the dash
  • Rough idling or stalling
  • Poor fuel economy
  • Strange smells or smoke
  • Decreased power or acceleration
  • Unusual noises from under the hood


Why Choose Us for Engine Diagnostics in Lavon?

  • Advanced Technology – We use the latest diagnostic equipment.
  • Certified Technicians – Skilled in identifying both common and complex issues.
  • Honest Repairs – We explain the problem in plain language before starting any work.
  • Fair Pricing – Affordable diagnostic services with no hidden fees.
  • Local & Trusted – Proudly serving Lavon and nearby communities.


Serving Lavon & Surrounding Areas

We’re here for drivers in Lavon, Wylie, Nevada, Josephine, Farmersville, and the rest of Collin County.

Our Engine Diagnostic Services

Check Engine Light Scans

We use cutting-edge computer systems to read error codes and identify issues quickly.


Sensor & Electrical Testing

Modern engines rely on dozens of sensors. We test and repair oxygen sensors, mass airflow sensors, and more.


Fuel System Diagnostics

From clogged injectors to pump problems, we find fuel system issues that affect performance.


Ignition System Testing

Misfires, rough starts, or poor acceleration often trace back to ignition problems. We’ll test spark plugs, coils, and wiring.



Complete Engine Health Check

We go beyond quick scans — our full inspections look at fluids, belts, cooling systems, and drivetrain connections.

FAQs About Engine Diagnostics

Q: Can I drive with my check engine light on?

If it’s flashing, no — it may indicate a serious issue. If it’s steady, you should still schedule a diagnostic as soon as possible.


Q: How long does a diagnostic take?

Most tests can be completed in under an hour.


Q: Do you charge for diagnostics?

We offer free transmission diagnostics and affordable pricing for full engine checks.

Schedule an appointment:

📍 Address: 14774 Co Rd 746, Lavon, TX 75166
📞 Phone: (972) 853-8460
🕒 Hours: Monday – Friday: 8:00 AM – 5:00 PM
💻 Book Online:Schedule Engine Diagnostics