Check Engine Light & Engine Diagnostics in Shawnee, KS

A check engine light is not a verdict, it is a starting point. A code tells us which circuit or system reported a fault — it does not tell us which part failed. At Donovan's we pull the codes, review freeze-frame and live data, and then actually test the circuit, sensor or mechanical system before we recommend replacing anything.

We diagnose misfires, rough idle, hard starting, stalling, hesitation, poor fuel economy, overheating, oil and coolant leaks, emissions and EVAP faults, and noises you cannot quite describe. Bring us the symptom; we will find the cause. Where a repair involves a major component, we explain the options and what each one will actually cost.

Engine work here ranges from ignition, fuel-delivery and sensor repairs through timing components, gaskets, water pumps, cooling systems and major internal repair. We work on all vehicle brands and have been doing mechanical repair on Nieman Road since 1937 — there is very little we have not seen.

If your dashboard is lit up, call (913) 631-9877 and we will get you scheduled for a proper diagnosis, not a parts-swap.

WHAT'S INCLUDED

• Check-engine light & code diagnosis
• Misfire & rough-idle repair
• Stalling & hesitation diagnosis
• Ignition & fuel-delivery repair
• Timing, gasket & water-pump service
• Emissions & EVAP fault diagnosis