Mason Automotive

ASE Mechanic for Check Engine Lights

Engine Diagnostics | Mechanic for Check Engine Light

At Mason Automotive, we go beyond the auto computer diagnostics work, we find the real root cause. Modern engines are complex systems; we pair factory‑level equipment with expert technicians so you don’t waste money on guesswork.

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What Our Engine Diagnostic Service Covers

Today’s vehicles rely on sophisticated engine management. Our team blends data from onboard computers with hands-on testing to pinpoint issues precisely.

OBD‑II & OEM scan tools: Read freeze‑frame data, live PIDs, mode 6, and manufacturer‑specific codes for accurate direction.
Electrical testing: Voltage drop, resistance and continuity checks on sensors, actuators, and grounds.
Oscilloscope analysis: Visualize cam/crank correlation, ignition waveforms, injector patterns, and network activity.
Fuel/air delivery checks: MAF/MAP evaluation, smoke testing for vacuum/EVAP leaks, fuel pressure & volume testing.
Mechanical condition: Compression, leak‑down, relative compression via amp‑clamp, timing inspections.

Why Choose Mason Automotive

Mason Automotive is a trusted name among engine auto repair shops in Bloomington, IN. Here’s why drivers choose us for auto diagnostics near me:

ASE‑Certified Technicians:

Deep experience diagnosing drivability, no‑starts, misfires, and intermittent faults.

Factory‑Level Tools:

Advanced scan software, scopes, smoke machines, and calibrated test equipment.

Clear Results:

You’ll get a plain‑English report with findings, root cause, and repair options.

No Guesswork:

We combine automated testing with technician diagnostics, saving you money on unneeded parts.

Transparent Pricing:

Fair estimates, approvals before work, and no hidden fees.

Diagnostic Appointments Available

Signs You Need an Engine Diagnostic

Pay attention to changes in how your vehicle drives. Schedule a computer diagnostic if you notice the check engine light solid or flashing, hard starts, stalling, rough idle, poor acceleration, or reduced power. Also observe bad fuel economy or fuel smell, rattling, pinging, or knocking under load, failed emissions, or strong exhaust odor.

How an Auto Diagnostic Test Works

Interview & Symptom Review: When does it happen? Hot/cold? Highway/city? While driving/idling?
Preliminary Scan & Health Check: Stored/active codes, freeze‑frame data, readiness monitors.
Data‑Driven Testing: Scope tests, smoke tests, fuel and ignition checks to isolate the fault.
Root‑Cause Verification: Confirm the failure with repeatable tests; no parts‑cannon.
Clear Report & Estimate: Findings, recommended repair, and any preventative notes.

Schedule Your Diagnostic Appointment

Factory Scheduled Maintenance

Taking care of your car regularly helps it last longer.

Complete Vehicle Inspections

We check your car from top to bottom to catch problems early. We look at all your car’s systems and tell you exactly what requires fixing.

Tire Replacement and Rotation

Replace worn-out tires for safety and rotate them to help them last longer.

Wheel Alignment

Misaligned wheels can lead to uneven tire wear and poor handling.

Fluid Services

Regular fluid checks and replacements keep your vehicle operating smoothly.

Fuel System Service

We clean injectors, check fuel lines, and optimize your system for peak operation.

Engine Diagnostics

Let our advanced diagnostic tools pinpoint the issue.

Battery Replacement

Avoid the inconvenience of a dead battery. We test and replace batteries to keep your car powered.

AC System Service

Stay cool and comfortable no matter the weather with Mason Automotive’s expert AC service and repair.

Brake Service

We check, fix, and replace brakes to keep you safe on the road.

Flexible Financing Now Available

Car repairs shouldn’t wait—and now, they don’t have to.

No hard credit check required
Quick approval process
Split your bill into smaller, manageable payments

Ask us about this option or let our team know you’d like to explore it. We’ve got your back—without breaking the bank.

Schedule a Service

TESTIMONIALS

See What Our Customers Say

Check out the latest reviews from satisfied customers who trust Mason Automotive for their engine diagnostics needs.

Trusted Mechanic in Bloomington, IN

Your Trusted Mechanic Near You

Located in Bloomington, IN, Mason Automotive is your local hub for engine diagnostics and repair. If you’ve been searching “Mechanic for check engine light”, we’re here with fast answers and repairs you can trust.