Vern's Auto Repair LLC
5739 Old Seguin Road, San Antonio, TX 78219 210.662.6449

Engine and Exhaust

Alt + /

Why did my vehicle fail its emissions test?

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.  That’s...
Published on: Feb 09, 2025

Making Sense of the O2 Sensor (Oxygen Sensor Replacement)

As you know, today’s 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 t...
Published on: Oct 06, 2024

Catalytic Converter Replacement

Many of us have become aware of how important it is to keep our planet’s air clean, and your vehicle has a key component that helps do just that: the catalytic converter.  It’s in the...
Published on: Mar 11, 2024

Exhaust Service at Vern's Auto Repair LLC

Driving around San Antonio, we've all heard a car or truck that needs a new muffler. But there's more to the exhaust system than just the muffler. The exhaust system has three main functions: Safel...
Published on: Jan 02, 2024

The Test Your Vehicle Can Fail (Emissions Tests)

Clean air quality is something that helps all of us thrive here on Planet Earth.  And considering that motor vehicles are a contributor to air pollution, emissions tests in the U.S. and Canada ar...
Published on: Jan 09, 2022

Diesel Exhaust Fluid

Diesel engines are appearing in more and more vehicles in nearly every category from compact cars to pick-up trucks to high-performance luxury vehicles.  In much of the world, 40% or more of pass...
Published on: Jul 17, 2021

EGR Valve

It is pretty amazing how auto makers have been able to consistently build more powerful engines in vehicles that get better fuel economy while at the same time meeting increasing environmental standar...
Published on: Jan 04, 2021

PCV Valve Replacement at Vern's Auto Repair LLC in San Antonio

The PCV valve is a little, inexpensive part that does a big job for San Antonio and our environment here in TX. PCV stands for Positive Crankcase Ventilation. The crankcase is the botto...
Published on: Nov 09, 2019