903-566-1027

Check Engine Light Diagnostics in Tyler, TX

A check engine light means your car found a problem, but the code only tells us where to look, not what to replace. We scan the system, then test to confirm the cause before we recommend a repair, so you only pay for work your vehicle actually needs.

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Technician reading a diagnostic scan tool at S & J Automotive
Photo from our shop on E 5th St.

What we handle

  • Check engine light diagnostics
  • Scan-tool diagnostics on all makes and models
  • Rough running, stalling and loss of power
  • Engine repair

All makes and models.

Signs it's time to come in

Tap one to request a quote.

How your quote is put together

Every repair is quoted after an honest inspection, and the quote is explained and approved by you before any work starts. A code can point to several possible causes, so the quote follows testing. What we find, the parts your engine takes and how much has to come apart to reach them all shape the final number.

  • Your vehicle

    Make, model, year and engine determine which parts fit and how the repair has to be done.

  • Parts choice and availability

    OEM or quality aftermarket, and what is in stock. We explain the options and the difference between them.

  • Labor time for your vehicle

    The same repair can take far longer on one vehicle than another, depending on what has to come apart to reach it.

  • What the inspection finds

    Related wear, such as rotors worn along with pads, can change the scope. We tell you what is urgent and what can wait.

  • Urgency

    How quickly you need the vehicle back can affect parts sourcing and scheduling.

Common questions

Is it safe to drive with the check engine light on?

A steady light usually means a problem that should be checked soon but is not an emergency. A flashing light typically signals a severe misfire that can damage the catalytic converter, so ease off and have the vehicle checked as soon as you can.

Can a loose gas cap turn on the check engine light?

Yes. A loose or worn gas cap can set an evaporative system code. If tightening it does not clear the light after a few days of driving, have the system tested.

Does the code tell you which part to replace?

No. A code points to a system or condition, not a specific part. Testing confirms whether a sensor, wiring, a vacuum leak or a mechanical problem is the real cause, which keeps you from paying for parts you do not need.

Related repairs

A misfire code often comes back to worn spark plugs or ignition parts, which we replace as part of tune-ups & maintenance. Low battery voltage can set warning lights of its own, so a battery or charging problem may call for car electrical repair, and an exhaust leak near an oxygen sensor can set a code that leads to exhaust & muffler repair.

From "something's off" to fixed.

  1. 1

    Tell us what's happening

    Pick a symptom, request a quote or call. A noise, a light, a smell: every detail helps.

  2. 2

    We inspect and diagnose

    Hands-on inspection and scan-tool diagnostics to find the real cause, on all makes and models.

  3. 3

    You approve, we repair

    We explain what we found and what the repair will cost. Work starts only after you say yes.

More services

Related services

The S & J Automotive shop and road sign at 3055 E 5th St in Tyler, Texas

Visit the shop

S & J Automotive
3055 E 5th St, Tyler, TX 75701
(903) 566-1027
Monday7:30 AM to 5:30 PM
Tuesday7:30 AM to 5:30 PM
Wednesday7:30 AM to 5:30 PM
Thursday7:30 AM to 5:30 PM
Friday7:30 AM to 5:30 PM
Saturday8:00 AM to 12:00 PM
SundayClosed

Serving Tyler, TX and surrounding areas.

Get directions Call 903-566-1027
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