Engine & Electrical Repair Services in Fresno, CA

A man is working on a car with a laptop and a multimeter.

Accurate Diagnostics, Honest Solutions

When your check engine light turns on or your vehicle shows signs of electrical trouble, trust San Joaquin Auto Care to find the root cause—fast. We specialize in complete engine diagnostics and electrical system repair for all makes and models. No guesswork, just straightforward service with reliable results.

From Dash Lights to Starting Issues

Our ASE-certified technicians use advanced scan tools to pinpoint problems with precision. We handle a wide range of issues including battery failure, faulty alternators, starter replacements, ignition system faults, misfires, and ECM/PCM problems. Whether it's a blown fuse or a major engine malfunction, we’ll get to the bottom of it.

Full-Service Engine Diagnostics & Repairs

Resolve Issues Before They Become Expensive

If your engine is running rough, losing power, or making strange noises, we’re here to help. We provide comprehensive engine services including:

  • Timing belt and timing chain replacement
  • Cylinder head repairs and gasket replacement
  • Spark plug and ignition coil service
  • Fuel injector and fuel pump diagnostics
  • Overheating and cooling system repairs
  • Crankshaft and camshaft sensor diagnostics



We work on domestic and foreign models, from sedans to trucks, and use OEM-quality parts for every repair.

Electrical System Diagnostics & Repair

Stay Powered and Protected

Today’s vehicles depend on advanced electrical systems—from the battery and alternator to the dashboard, lighting, and safety features. Our team can repair:


  • Wiring harness damage
  • Blown fuses and relays
  • Power window and lock failures
  • Electrical shorts and battery drain issues
  • Sensor and module malfunctions

We also test your battery’s health, inspect your alternator output, and ensure your vehicle starts reliably in all weather.

A man is fixing a car battery with a wrench.
A man is working on the engine of a car with a wrench.

Signs You Need Engine or Electrical Service

Don’t Wait for a Breakdown

Common symptoms of engine or electrical trouble include:


  • Engine stalling or misfiring
  • Dashboard warning lights (Check Engine, Battery, etc.)
  • Slow cranking or no-start
  • Flickering headlights or electrical accessories
  • Rough idle or decreased fuel efficiency

Addressing these issues early can save you from major repairs later.

Why Fresno Drivers Trust San Joaquin Auto Care

Precision, Transparency, and Local Expertise

We believe in explaining repairs in plain language and offering real solutions—no upsells or hidden fees. Fresno customers come back because they know we’ll only recommend what’s truly needed and stand behind our work.

“Tracy is very reasonable, honest, easy to deal with and timely.”

– Krystyna T.

“Tracy is very reasonable, honest, easy to deal with and timely.”

– Krystyna T.

“Tracy is very reasonable, honest, easy to deal with and timely.”

– Krystyna T.

Schedule Engine or Electrical Repair in Fresno

Call or Visit San Joaquin Auto Care

Whether your engine is acting up or your dashboard lights won’t go off, we’re here to help. Visit us at 5497 E Olive Ave or call (559) 251-1475. Open Monday–Friday, 8AM–5PM.