Making Sense of the O2 Sensor (Oxygen Sensor Replacement)
April 27, 2025
As you know, todays vehicles rely on a lot of computers in them to keep them running clean and efficiently. Those computers depend on information delivered by several sensors throughout the engine and exhaust system. And one of the most important is the oxygen sensor. Known as the O2 sensor f... More
Why did my vehicle fail its emissions test?
March 23, 2025
We all want to breathe clean air and keep our planet green. One of the ways to do that is by requiring all vehicles with internal combustion engines to pass an emissions test. Thats because these vehicles can be big polluters. Everyone wants their car to pass the test so they can continue the... More
Avoiding Exhaustion (EGR Valve Replacement)
October 27, 2024
No, ERG isnt the sound a pirate makes. Its a part in your vehicle that recirculates exhaust gas to reduce certain gases and pollutants in the atmosphere. In fact, ERG stands for Exhaust Gas Recirculation. One gas our vehicles may make when they burn fuel is nitric oxide, which can play a big ro... More
Catalytic Converter Replacement
April 14, 2024
Many of us have become aware of how important it is to keep our planets air clean, and your vehicle has a key component that helps do just that: the catalytic converter. Its in the exhaust system, and its job is to superheat unburned, harmful byproducts in the exhaust, so they dont get spewed ou... More
Sounds Exhausting! (Exhaust Service)
December 31, 2023
Most of us know a bad muffler when we hear it. That loud, rumbling sound is unmistakable. Did you also know you can get a ticket for driving around with a loud exhaust system? If your exhaust system has a leak in it, it may be allowing poisonous gases inside your vehicle and could make you serio... More
PCV Valve: What Is It?
November 6, 2022
Most St. Johns drivers know something about preventive maintenance on a vehicle. We know we should routinely replace the oil and wiper blades and other fluids. But have you heard of a PCV valve ? This little car part needs to be replaced regularly or it can cause some serious problems in your ve... More
Exhaust Service at Tuffy St. Johns in St. Johns
October 17, 2022
Whenever they hear the term "exhaust service," most St. Johns residents think about exhaust pipes and mufflers. Well, actually, exhaust service at Tuffy St. Johns is a lot more comprehensive these days. For example, catalytic converters were mandated in 1976 and on-board emission control compute... More
St. Johns Exhaust and Emissions Service
September 15, 2022
Many St. Johns residents don't realize that there is more to exhaust system maintenance than just tailpipes and mufflers, if you can see smoke or if it's too loud. Exhaust service at a full-service automotive center like Tuffy St. Johns is really a lot more comprehensive these days.For example,... More
Exhaust Service at Tuffy St. Johns: Passing the Smell Test
August 12, 2022
The exhaust system on a vehicle is more complex than most St. Johns residents realize. It contains everything from old-fashioned pipes and clamps to sophisticated computers and sensors. All Florida folks know a properly functioning exhaust system is good for the environment, but sometimes we fo... More
The Sign of the Shield (Heat Shield Repair and Replacement)
December 26, 2021
Even in the months where temperatures are cooler, heat is still an enemy of your vehicle. When your engine runs, it creates heat, so there are numerous heat shields that protect other parts from those higher temperatures. Heat shields are installed around several areas of the exhaust system. Ot... More