Book Jeep computer diagnostics at our Haines City shop. Same technicians, same bays, every time you come in.
31600 U.S. 27, Haines City, FL 33844
Monday to Friday, 7:30 AM to 5:30 PM
When a scan tool pulls a stored code off your car, what comes back is a number and a short description: a lean condition, a misfire on cylinder three, a circuit reading out of range. That tells us where the car noticed something wrong. It doesn't tell us what caused it. One lean code can come from a vacuum leak, a tired fuel pump, a dirty mass airflow sensor, or an exhaust leak sitting upstream of a sensor. Replacing the part named in the description works out sometimes. When it doesn't, you've bought a part and you still have the problem.
So the code is where we start, not where we stop. From there a technician watches live data while the engine runs, compares those readings against what the manufacturer says they should be, and tests the actual circuit or component with a meter, a scope, a pressure gauge, or a smoke machine. Sometimes it means driving the car until the fault shows itself. That testing is what turns a system into a part, and it's why diagnosis takes real time. It's skilled labor with real equipment behind it, the same as any other job in the shop, which is why it gets billed like one.
A free code pull at a parts counter is a useful thing to have. It tells you a code is stored and roughly what system it lives in, which is more than the dashboard gives you, and it costs you nothing. It's a starting point. What it isn't is a diagnosis, because nobody put the car on a lift, watched it run, or tested anything. If you already have the code, bring it. We'll use it. We'll just keep going from there.
Here's what paying for diagnostic time actually buys you. A named cause, meaning the specific failure we found and how we confirmed it, not a system and not a maybe. Photos of it on your phone from the digital inspection, taken on your vehicle that day. And a quote to fix it. Whether you do that repair, with us or anywhere else, is a separate decision and it stays yours. Plenty of people take the answer and go think about it.
The math on this is simple. Diagnosis costs what it costs, once. Guessing costs a part at a time until something works, and none of those parts come back. That's what you're really protected from here: paying for repairs that don't fix anything. Whatever we do fix carries a 36 month, 36,000 mile nationwide warranty, and every one of our six shops works the same way.
At our Haines City shop, the technician treated vibration as the main concern on this vehicle.
Read the full jobThe technician at our Haines City shop started with a diagnosis of the engine concern, including testing and inspection of the vehicle system involved.
Read the full jobLooking for a great mechanic shop its really hard around the area am in. I always pass by Johnnys automotive on haines city and on Dundee RD and just there facility is eye opening. I had issues with my jeep wrangler and I needed someone I can trust with my Jeep. Well I gave Johnny’s automotive a try to look at my jeep with some major issues. The minute I walked into there shop it’s a great atmosphere in Haines city. I was sent videos of my issues and explaining in details whats wrong with my jeep. Peace of mind knowing that they really care about your vehicle. I got my jeep back in 2 days of major work. I have not driven the jeep yet to give it a 5 star but I know that the work is guaranteed at least. I will def keep using Johnny’s Automotive for my future car care. Thanks for treating your customer with care and letting them know on there issues and future issues than can possible in counter. Thanks again. Second round on getting my jeep fixed with a Death wobble. Everything came out great so far. Def give a 5 start now for this shop. Will continue to give this shop a shot for all my car needs.
Gio Rod
Verified Google Review
Jerry and his management team serviced my Jeep Cherokee and has the town citizens interest at heart!!! Great customer service and friendly environment ready to help their customer with any mechanical needs. Quick and efficient. Great prices. Lake Wales check them out and they have locations in Dundee and Haines City!!!!
Erica Smith
Verified Google Review
I cannot thank Johnny’s Automotive enough to get my Jeep back up and running. What started out as one problem ended up being multiple problems but the team at Johnny’s kept working to resolve issues. I would recommend Johnny’s to anyone who needs car repairs. They will get your vehicle back up and running.
Beth Conley
Verified Google Review
Johnny's treated me perfectly on my first ever visit. I only needed a simple oil change in my 2020 Jeep Grand Cherokee. I search a location social media site and Johnny earned high marks. I called, got an estimate over the phone and appointment the same day (they had a cancellation). I took my truck in and received great customer service. The place is easy to get to and very clean and professional. I wait about an hour for them to complete the job. There was a bit of an upsell for additional services, but I told them I was there for an oil changed and declined. I recommend Johnny's.
Tyrone Adams
Verified Google Review
I just want to thank Johnny's for the very professional job they did on my wife's Jeep! Thank you!
Osce Lewis
Verified Google Review
Pick whichever one is easiest to drive to.
ASE Certified Technicians
ASE certified techs working on your vehicle
Flexible Drop-Off Hours
Convenient service options
20+ Years
2 decades of trusted service
