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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) 546-6735

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

September 2026

Transmission Leak Still Dripping After a New Pan

What the customer reported

The vehicle owner reported quarter-sized spots of fluid dripping under the vehicle from the transmission area. They had changed the transmission pan themselves and refilled it to the proper level, but the vehicle was still leaking.

What we found and did

At our Frostproof shop, the team focused on the transmission cooler line bolt, where the leak repair was needed. The technician performed a transmission cooler line bolt thread repair, removing and replacing components as required to access the area and complete the service. Additional fluid was added as needed to finish the job.

Our team

Our Team

September 2026

Why Won't My Ignition Key Turn?

What the customer reported

The vehicle owner was unable to start their car because the ignition key wouldn't turn.

What we found and did

The technician identified that the ignition lock cylinder was faulty and needed replacement. The team at our Frostproof shop removed and replaced the steering wheel's ignition lock cylinder. They also performed key programming to ensure the new keys worked seamlessly with the vehicle's system. After completing the installation, they conducted a thorough road test to verify the repair.

Result

The vehicle started smoothly with the new ignition lock cylinder and keys, resolving the owner's issue.

Pro Tip

If your ignition key won't turn, it could be a sign of a worn ignition lock cylinder. Addressing this issue early can prevent unexpected no-start situations.

Our team

Our Team

September 2026

Why Are My Warning Lights On?

What the customer reported

The vehicle owner noticed the service engine light and TPMS light were illuminated on their dashboard.

What we found and did

The technician identified issues with the turbocharger, seals, and pressure converters, and found that the coolant was acidic, which could damage the water pump, radiator, and thermostat. At our Frostproof shop, the team performed a comprehensive service that included replacing the turbocharger and seals, addressing the pressure converters, and conducting a complete coolant system flush to neutralize the acidity. Additionally, they completed a full synthetic oil change to vehicle specifications.

Result

After the services, the warning lights were resolved, and the vehicle was running smoothly.

Pro Tip

If your service engine light comes on, it could indicate issues like a failing turbocharger or acidic coolant. Addressing these early can prevent costly repairs down the road.

Our team

Our Team

September 2026

What Caused the Oil Leak Under My Vehicle?

What the customer reported

The vehicle owner noticed something hanging under the car and wanted it inspected.

What we found and did

The technician found an engine oil leak during the inspection. The team added dye to the engine oil, cleaned the area, and planned to recheck for leaks. They also mounted and installed two new tires, though alignment was not performed.

Result

The initial steps to address the oil leak were completed, and new tires were installed for improved safety.

Pro Tip

If you notice oil spots where you park, it might indicate a leak. Early detection can prevent more costly repairs, so schedule an inspection promptly.

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

2 decades of trusted service