
Describe the symptom, paste a code, or plug in a scanner. Carlos tells you what's wrong, how urgent it is, and what a fair fix costs.
Year, make, model — then describe the symptom, paste the code, or snap a photo of the dash.
Known issues for your exact vehicle, your symptoms, and real repair data, ranked by likelihood.
Ranked causes, step-by-step checks, honest cost ranges. Everything to walk into the shop prepared.
The ignition coil creates the spark to fire each cylinder. When one fails, that cylinder misfires — causing rough running, especially on cold starts or under load.
If the misfire follows the coil to the new cylinder, you've confirmed the coil is bad.
Paste any P0xxx, C0xxx, or B1xxx code and get plain English with ranked fixes.
Pair a $30 OBD2 adapter and Carlos pulls trouble codes and live engine data straight from the ECU.
Paste or photograph the estimate. Carlos flags what's fair, what's high, and what's a red flag.
Snap your dashboard lights or engine bay and Carlos reads what he sees.
Record the knock, squeal, or rattle. Carlos factors the sound into the diagnosis.
Save your cars, track what you fixed and what it cost, get maintenance reminders.
Know what's wrong — and what it should cost — before you ever talk to a mechanic.
Ask Carlos — FreeTakes under a minute. No card needed.