Engine Diagnostics & Repair in Olathe

Engine Diagnostics & Repair at Celso's Honest Auto Repair

A check engine light doesn't tell you what's wrong — it tells you where to start looking. Our technicians perform full engine mechanical diagnosis and engine performance testing to find the actual cause, not just the code, so you don't pay to replace parts that were never the problem.

We diagnose rough idle, misfires, stalling, hard starts, poor fuel economy, loss of power, and unusual noises. Using scan tools alongside hands-on mechanical testing — compression, vacuum, and electrical checks — we trace the fault to its source.

Once we know what's wrong, we explain it in plain English: what failed, why, what it costs to fix, and whether anything can safely wait. You approve the work before we start it. Ever had a shop hand you a mystery bill? That doesn't happen here.

From sensors and ignition components to deeper mechanical engine repair, we handle the fix in-house at our shop on E Spruce St in Olathe. Most diagnostics can be scheduled within days — call (913) 850-1750 and tell us what your car is doing.