Mechanical repair

Engine Diagnostics & Repair

Check engine light on? We diagnose sensor faults, misfires, fuel and emissions issues with professional equipment. We fix the cause, not the symptom.

Or message us on WhatsApp (671) 864-8929

  • 3 shops in Tamuning & Harmon
  • Open 8 AM–5 PM
  • Photos with every inspection
Engine Diagnostics & Repair

Professional Check Engine Light & Engine Diagnostic Services at Auto Worx Guam

Is your check engine light on or your vehicle not performing the way it should? At Auto Worx Guam, our professional engine diagnostics services are designed to quickly and accurately identify engine-related issues before they turn into costly repairs.

Using advanced diagnostic scanners and technician-led inspections, we pinpoint the root cause — whether it’s a minor sensor malfunction or a more complex engine performance issue.

Advanced Engine Diagnostic Technology

Modern vehicles rely on sophisticated engine management systems. When something goes wrong, guessing can waste time and money. Our state-of-the-art engine diagnostic tools allow us to read trouble codes, analyze live data, and assess system performance with precision.

Our engine diagnostics can identify:

  • Check engine light issues
  • Sensor failures (O2, MAF, MAP, etc.)
  • Fuel system problems
  • Ignition and misfire issues
  • Emissions-related faults
  • Poor performance or reduced fuel efficiency
  • Rough idle, stalling, or hesitation

Once diagnosed, we clearly explain the findings and recommend only the necessary repairs.

Accurate Diagnostics, Honest Solutions

At Auto Worx, diagnostics are not just about pulling a code—they’re about understanding the cause. Our technicians go beyond the scan to ensure the issue is correctly identified and addressed the first time, saving you unnecessary parts replacement and repeat visits.

Whether your vehicle needs a simple repair or further mechanical service, we’ll guide you through the best solution for long-term engine health.

Serving Guam’s Drivers & Fleets

We proudly provide engine diagnostics in Guam for daily drivers, family vehicles, and fleet accounts. From sedans and trucks to SUVs and work vehicles, Auto Worx has the expertise to diagnose engines across all major makes and models.

Why Choose Auto Worx Guam for Engine Diagnostics?

✔ Advanced Diagnostic Equipment – Accurate and efficient troubleshooting
✔ Experienced Technicians – Skilled in complex engine systems
✔ No Guesswork Repairs – We fix the cause, not just the symptom
✔ Time & Cost Efficient – Prevents unnecessary repairs and downtime
✔ Full-Service Auto Care – Diagnostics, repairs, maintenance, and more
✔ Trusted Guam Automotive Shop – Local service you can rely on

We focus on precision, transparency, and long-term vehicle performance.

Schedule Your Engine Diagnostic Service Today

Don’t ignore a check engine light or unusual engine behavior. Get peace of mind with professional engine diagnostics at Auto Worx Guam.

Book here for your appointment:

Call us at +1 (671) 989-2979

Message us via our contact page or WhatsApp +1 (671) 864-8929

Auto Worx Guam — we get to the root of the problem so you can drive with confidence.

Free Auto Worx Service Plan

Know what's due before it breaks.

Tell us your year, make, model and mileage. An advisor checks the factory schedule and sends you a free plan: what's overdue, what's coming soon and what to plan for next year.

Takes 30 seconds. You can also ask at any counter.

ExampleYour service plan98,400 mi
Overdue
Engine oil & filterLast changed 7 months ago
Coming soon
Tire rotationWithin 1,000 mi
Cabin air filterNext visit
Plan for next year
Brake fluidSpring 2027
CoolantBy 110,000 mi

Locations

Three shops. One phone number.

Call (671) 989-2979 and we route you to the right bay, or book online at the shop that suits you.

Auto Worx Ypao shop in Tamuning, Guam
Tamuning

Ypao

Open daily
Address
295 S Marine Corps Dr., Tamuning, Guam 96913
Hours
8 AM–5 PM, open daily
MechanicalOil changeFree AC checkDetailing
Service bays at the Auto Worx Warehouse in Tamuning, Guam
Tamuning

Warehouse

Mon–Sat
Address
144 Tun Joaquin Guerrero St., Tamuning, Guam 96913
Hours
8 AM–5 PM, Monday to Saturday
MechanicalOil changeFree AC checkDetailingPaint & body
Auto Worx Harmon shop in Guam
Harmon

Harmon

Mon–Sat
Address
16 Harmon Industrial Park, Guam 96913
Hours
8 AM–5 PM, Monday to Saturday
MechanicalOil changeFree AC check