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Johnny's AutomotiveJohnny's Automotive
Lake Wales, FL

Computer Diagnostics at our Lake Wales shop

Bring it to our Lake Wales shop and we'll handle the computer diagnostics. Here's where to find us, when we're open, and how to book a time.

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Lake Wales, FL323 North Scenic HighwayBook a time online
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Where to find our Lake Wales shop

Address, hours, and directions for the shop that handles your computer diagnostics.

Address

323 North Scenic Highway
Lake Wales, FL 33853

Shop phone

(863) 676-3858

Hours

Monday
7:30 AM to 5:30 PM
Tuesday
7:30 AM to 5:30 PM
Wednesday
7:30 AM to 5:30 PM
Thursday
7:30 AM to 5:30 PM
Friday
7:30 AM to 5:30 PM
Saturday
Closed
Sunday
Closed
Options

Computer Diagnostics options in Lake Wales

Choose the right computer diagnostics service for your needs.

Check Engine Light

Check engine light on? We pinpoint the exact cause with advanced diagnostics and provide clear repair options — no guesswork.

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Pre-Purchase Inspection

Buying a used car? Our thorough multi-point inspection uncovers hidden problems so you can buy with confidence.

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Vehicle Inspection

Vehicle Inspection evaluates relevant vehicle systems and documents findings for repair planning.

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No Start Diagnosis

No Start Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Electrical Diagnosis

Electrical Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Charging System Diagnosis

Charging System Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Overheating Diagnosis

Overheating Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Brake Noise Diagnosis

Brake Noise Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Suspension Noise Diagnosis

Suspension Noise Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Steering Problem Diagnosis

Steering Problem Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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AC Diagnosis

AC Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Vibration Diagnosis

Vibration Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Fluid Leak Diagnosis

Fluid Leak Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Recent Computer Diagnostics Work in Lake Wales

Real jobs completed by our team in the Lake Wales area

Our team

Our Team

September 2026

What Caused the Check Engine Light to Stay On?

The Problem

The vehicle owner noticed that the check engine light was on. Another shop had indicated a crankshaft-related issue, even though the crankshaft was recently replaced.

What We Found

The technician found that the problem was related to the crankshaft position sensor rather than the crankshaft itself.

The Fix

The team at our Lake Wales shop removed and replaced the faulty crankshaft position sensor. They performed necessary tests to ensure the new sensor was functioning correctly and conducted a final road test to verify the repair.

The Result

The check engine light was successfully turned off, and the vehicle was running smoothly.

Pro Tip

A check engine light related to the crankshaft position sensor can often be resolved by replacing the sensor itself. If your light comes on after recent repairs, a follow-up check might save you from unnecessary part replacements.

Our team

Our Team

August 2026

What Causes a Loud Noise When Driving at All Speeds?

The Problem

The vehicle was towed into the shop due to a loud noise occurring while driving at all speeds.

What We Found

The technician found that the noise was due to worn control arms, a faulty strut assembly, bent rear sway bar links, and severely worn brake pads and tires.

The Fix

The team replaced the front lower control arm with ball joint, the rear upper control arm, and the front strut assembly. They also replaced the bent rear sway bar links. For safety, they mounted and installed two new rear tires and replaced the front brake pads and rotors.

The Result

After completing the repairs, the vehicle was road-tested and the noise was eliminated.

Pro Tip

If you hear a loud noise while driving, it could be a suspension issue. Address it promptly to prevent further damage and ensure your safety on the road.

Our team

Our Team

August 2026

Why Is My Car AC Taking Forever to Cool?

The Problem

The vehicle owner reported that the air conditioning system took a long time to cool the interior.

What We Found

The technician discovered that the refrigerant level was extremely low, with only 0.3 lbs present instead of the required 1.21 lbs.

The Fix

The team topped off the refrigerant to the proper level and recommended driving the vehicle for a couple of weeks before returning for further inspection. They noted small spots of dirt and oil residue but did not find any obvious leaks.

Pro Tip

If your AC takes too long to cool, it might be low on refrigerant. Refilling it can improve cooling, but if the problem persists, a leak might be present. Schedule a follow-up inspection to prevent further cooling issues.

Our team

Our Team

August 2026

What Causes the Check Engine Light to Flicker On and Off?

The Problem

The vehicle owner reported that the check engine light was intermittently turning on and off.

What We Found

The technician performed a digital inspection and identified a faulty ignition knock sensor as the cause of the check engine light issue.

The Fix

The technician removed and replaced the faulty ignition knock sensor. After the replacement, they conducted a retest and verified the repair, followed by a final road test to ensure the issue was resolved.

The Result

The check engine light issue was successfully resolved, and the vehicle was returned to the owner in optimal condition.

Pro Tip

If your check engine light flickers on and off, it could indicate a sensor issue. Addressing it promptly can prevent more serious engine problems and save on repair costs.

FAQ

Computer Diagnostics in Lake Wales: questions answered

Answered by our licensed technicians serving Lake Wales.

Why do you charge for diagnosis when the parts store reads codes for free?

Because they're two different things. Reading a code takes a few seconds and tells you which system reported a fault. Finding the cause takes a technician, a lift, live data, and testing to prove which part in that system actually failed. That's the work you're paying for, and it's the part that keeps you from buying components that don't fix the car. Bring us the code you already have. It gives us a head start.

Does the diagnostic fee go toward the repair if I have you do the work?

That depends on the job, and the service advisor will lay it out at the counter before anything starts, so there are no surprises on the invoice. The bigger point is what the fee gets you either way: a confirmed cause with photos, and a quote based on the actual problem instead of a guess. Ask us when you drop the car off and we'll tell you exactly how it works for your repair.

How long does diagnosis take?

It depends on the symptom. Something that's failing right now in front of the technician can be pinned down quickly. An intermittent problem, a wiring fault, or a noise that only shows up cold takes longer, because we have to recreate the condition before we can test anything. We'll give you a time estimate up front and call you if what we find changes it. We'd rather tell you it's going to take a while than hand you a fast answer that's wrong.

What if you can't find the problem?

We'll tell you that plainly instead of picking a part and hoping. Usually it means the fault is intermittent and hasn't shown itself yet, and the next step is either leaving the car with us longer or bringing it back when the symptom is happening. You'll get everything we ruled out and how we ruled it out, which is real information even when it isn't the answer you wanted. If a job is beyond what we can test here, we'll say so rather than run up your bill.

Can you diagnose something another shop already worked on?

Yes, and we get that call a lot. We start from the car in front of us rather than from what's already been replaced, because assuming an earlier repair was right is how the same wrong answer gets repeated. Bring your paperwork if you have it. Knowing what's already been done and what changed afterward is genuinely useful. You'll get the same thing anyone else gets: a named cause, photos, and a quote, and no pressure about where you have the work done.

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