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Angel’s Auto Repair
Mechanical · San Pablo, CA

Auto Engine Diagnostics
in San Pablo.

Check-engine light on, rough idle, stalling or poor fuel economy? We read the codes, test the systems, and tell you what's actually wrong — before any repair starts.

Talk to a mechanic
(341) 231-7697

Describe the symptom — we’ll tell you what it likely is, whether it can wait, and what it involves.

Call (341) 231-7697Book online1500 Amador St, San Pablo, CA 94806

A check-engine light is a clue, not a diagnosis. Generic parts-store readers pull a code; that code can point at twenty things. We pull the codes too — then we check live data, fuel trims, ignition patterns, sensor waveforms and vacuum pressure until the numbers agree on one cause. That's the difference between replacing parts and fixing the car.

We service all makes and models — domestic, import, car, truck or SUV. Common diagnostic jobs we handle every week include misfires, no-starts, stalling, rough idle, hesitation under load, and emissions failures that keep failing the smog check.

What’s included

  • OBD-II code retrieval and live data analysis
  • Check-engine light, ABS and warning light diagnosis
  • No-start, stalling and rough-idle troubleshooting
  • Misfire testing: coils, plugs, injectors, compression
  • Fuel and vacuum leak detection
  • Battery, charging and parasitic draw testing

Signs you need this

  • The check-engine light is on, flashing, or keeps coming back
  • The car cranks but won't start, or stalls at stoplights
  • Rough idle, hesitation, or a shake at highway speed
  • Gas mileage dropped noticeably over the last few fill-ups

Auto Engine Diagnostics — common questions

Can you tell me what the check-engine light means before I bring the car in?
Call (341) 231-7697 and tell us the code or the symptom — we'll tell you straight whether it's urgent, and what a diagnosis involves. Driving with a solid light is usually okay for a short trip; a flashing light means stop and call.
Do you fix what the diagnostic finds, or just read the codes?
We fix what the diagnostic finds. Reading a code is the first five minutes — the rest is testing until we can point at the failed part with confidence, then we quote the repair before touching anything.

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Ready to get it
looked at?

Call (341) 231-7697
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