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Johnny's AutomotiveJohnny's Automotive
Frostproof, FL

Computer Diagnostics at our Frostproof shop

Bring it to our Frostproof 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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Frostproof, FL101 North Scenic HighwayBook a time online
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Where to find our Frostproof shop

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

Address

101 North Scenic Highway
Frostproof, FL 33843

Shop phone

(863) 328-4676

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 Frostproof

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 Frostproof

Real jobs completed by our team in the Frostproof area

Our team

Our Team

August 2026

Traction and Check Engine Light On Simultaneously

The Problem

The vehicle owner noticed that both the traction control and check engine lights were illuminated.

What We Found

The technician identified that the Engine Variable Valve Timing (VVT) solenoid required replacement.

The Fix

The technician removed and replaced the timing control valve solenoid and the VVT solenoid, ensuring all necessary gaskets were also replaced. Additionally, a BG complete coolant system flush was performed to maintain the engine's cooling efficiency.

The Result

After the repairs, the vehicle's warning lights were no longer illuminated, and it was running smoothly.

Pro Tip

Keeping your engine oil clean is crucial for the longevity of your VVT solenoid. Regular oil changes help prevent premature failure and costly repairs.

Our team

Our Team

August 2026

Why Is My Car Going Into Limp Mode?

The Problem

The vehicle owner reported that their car was going into limp mode and the check engine light was on.

What We Found

The technician determined that the throttle body unit was malfunctioning, causing the vehicle to enter limp mode.

The Fix

The team at our Frostproof shop removed and replaced the faulty throttle body unit along with its gasket. They ensured all components were properly installed and performed a final road test to verify the repair.

The Result

After the repair, the vehicle no longer went into limp mode, and the check engine light was cleared.

Pro Tip

If your car goes into limp mode, it often indicates an issue with the throttle body. Addressing it promptly can prevent more severe engine problems and save on costly repairs.

FAQ

Computer Diagnostics in Frostproof: questions answered

Answered by our licensed technicians serving Frostproof.

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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ASE Certified Technicians

ASE certified techs working on your vehicle

Flexible Drop-Off Hours

Convenient service options

20+ Years

Decades of trusted service