Auto repair services in Jacksonville

Harnold comes to you to diagnose the problem. Repairs are on Saturday or Sunday, in your driveway or at his Westside location, depending on the job. He covers Jacksonville, Orange Park, Fleming Island, and surrounding areas. Not sure what's wrong? Book a weeknight diagnosis after 5:30 pm.

Front brake rotor and strut with the wheel removed for service

Brake repair

Signs it's time

  • Squealing or grinding when you stop
  • A pedal that pulses, or sinks lower than it used to
  • The car pulls to one side under braking
  • A brake warning light on the dash

What the job covers: brake pads, rotors, calipers, and brake fluid.

I had a great experience with Arnold. He is not only an excellent mechanic but also a wonderful person. He is honest, trustworthy, and a man of strong principles. He has worked on two of the cars in my family. First, he worked on our 2005 Acura and left it running like new. Later, he did a full maintenance on a 2013 Hyundai Sonata — he replaced the rotors, brake pads, and spark plugs literally in two hours and basically tuned the car. It felt like driving a new car again. Arnold is extremely knowledgeable and takes pride in his work. I recommend him with complete confidence.

JNAA JS, Google review
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Underside of an engine with the pan removed

Oil changes & maintenance

Signs it's time

  • The oil-change sticker or the dash reminder says you're due
  • An oil pressure or maintenance light
  • Rough idle or slow starts that point to worn spark plugs

What the job covers: oil and filter changes, spark plugs, air and cabin filters, and fluid checks.

10/10. I got a oil change on my 22 accord 2.0T. Very honest and highly dependable , trustworthy for all your mechanic needs. Also he is open on weekends which is good. Harnold the best.

Justin T, Google review
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New wheel hub and bearing assembly on a steering knuckle

Wheel bearings & hubs

Signs it's time

  • A hum or growl that gets louder as you speed up
  • The noise changes when you steer left or right
  • Play or a clunk in the wheel
  • An ABS light that comes on with the noise

What the job covers: hub and wheel bearing assemblies, and steering knuckles where the job calls for it.

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New A/C condenser ready to install

A/C repair & recharge

Signs it's time

  • Air blows warm, or only cold on the highway
  • It worked after a recharge, then went warm again
  • A click or rattle when the A/C turns on

What the job covers: A/C recharges, condenser replacement, and A/C component repair.

My A/C in my car stopped working and I went to one of the big shops to get it working. They put freon in the car and it started working. I was told I need to keep dial on low. I did exactly that. I paid over two hundred dollars to get this…

Jennifer Scott, Google review
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Multimeter reading 12.44 volts during a battery test

Check engine light & diagnosis

Book this when

  • The check engine light is on, or flashing
  • The car runs rough, stalls, or won't start
  • Something changed and you don't know what

Where and when: at your place, weeknights after 5:30 pm. Harnold then tells you what the repair involves and whether it can be done in your driveway.

Great experience overall. The team was professional, honest, and easy to talk to. They took the time to explain what was wrong with my car and gave me a clear estimate upfront — no surprises. The pricing was fair, and the repair was done on…

gabriel rivas brizuela, Google review
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Replacement starter motor ready to install

Battery, starter & alternator

Signs it's time

  • Clicking, or a slow crank, when you turn the key
  • Dim lights or a battery light while driving
  • A battery that keeps dying overnight

What the job covers: battery testing and replacement, starters, alternators, and electrical diagnosis.

Arnold is the best mechanic! He came right away and fixed my battery with no issue. He is so friendly! I definitely recommend…

Ally Doyle, Google review
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Steering & suspension

  • Clunks over bumps
  • Bouncing after dips, or a nose that dives when you brake
  • Loose or wandering steering

What the job covers: struts, shocks, and steering and suspension parts.

Some parts, like tie rods and control arms, need a wheel alignment afterward. Harnold doesn't do alignments, so plan on a shop visit for that step.

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Oil cooler and oil filter housing removed for replacement

Engine & cooling system repair

  • Oil spots under the car
  • The temperature gauge climbing, or coolant disappearing
  • Smoke, steam, or a burning smell

What the job covers: oil leaks and gaskets, oil coolers, and cooling system parts.

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Get it handled on your day off.

Diagnosis at your place on weeknights after 5:30 pm. Repairs on Saturday and Sunday, in your driveway or at his Westside location.

Call (904) 898-0256 Request My Appointment