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Tune-Up & Spark Plug Replacement in Dallas, TX

Quick answer

A shaking idle, flashing check engine light or poor fuel economy usually means worn spark plugs or a failing ignition coil. We replace plugs and coils at your home and confirm the misfire is gone with a scan tool. On-Site Mobile Mechanics of Dallas does it on-site anywhere within 50 miles of Dallas for $120 – $480, usually the same day.

Typical price: $120 – $480

Call 469-218-2804Tune-Up & Spark Plug Replacement

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What's included in mobile tune-up & spark plug replacement

  • Spark plug replacement
  • Ignition coil testing and replacement
  • Throttle body cleaning
  • Air filter replacement
  • Misfire code verification

How our on-site tune-up & spark plug replacement works

  1. 1Call or request a quote online
  2. 2We confirm pricing and an arrival window
  3. 3A certified mechanic arrives at your home or work
  4. 4Repair completed on-site with a written warranty

Tune-Up & Spark Plug Replacement FAQs

How often should spark plugs be replaced?

Iridium and platinum plugs last 60,000–100,000 miles; copper plugs about 30,000.

What does a misfire feel like?

Shaking at idle, stumbling on acceleration and often a flashing check engine light.

Is a tune-up still needed on modern cars?

Not as a set package — but plugs, coils and filters still wear out on schedule.

Can bad plugs hurt my catalytic converter?

Yes. Unburned fuel from misfires overheats and damages the converter.

Tune-Up & Spark Plug Replacement near you: cities we serve

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Tune-Up & Spark Plug Replacement guides & answers

What Does a Flashing Check Engine Light Mean?

What Does a Flashing Check Engine Light Mean?

Why a blinking light is more urgent than a solid one and what to do immediately.

How Often Should Spark Plugs Be Replaced?

How Often Should Spark Plugs Be Replaced?

Spark plug intervals by type and symptoms of worn plugs.

Broken down? We'll come to you.

Same-day mobile auto repair across Dallas–Fort Worth.

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