Fourth Street Automotive
390 AVENUE L MARRERO, LA 70072 504-340-6603

Engine and Exhaust

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Avoiding Exhaustion (EGR Valve Replacement)

No, ERG isn’t the sound a pirate makes.  It’s a part in your vehicle that recirculates exhaust gas to reduce certain gases and pollutants in the atmosphere.  In fact, ERG stands ...
Published on: Mar 16, 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: Feb 09, 2025

Sounds Like a Hot Rod (Noisy Exhaust System) Has Video

Driving along, your exhaust system's rumbling so loud that people turn and stare at you pass by.  You're wondering when the police are going to pull you over for illegal noise. Your mind immedia...
Published on: Jan 19, 2025

Sounds Exhausting! (Exhaust Service)

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 s...
Published on: Dec 01, 2024

PCV Valve: What Is It? Has Video

Most MARRERO 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 l...
Published on: Jul 17, 2022

What Is an EGR Valve? (EGR Valve Service) Has Video

If you've ever felt your vehicle hesitate, go, then hesitate again, you might think there's something wrong with the transmission.  After all, it's not moving smoothly  down the road.  ...
Published on: Aug 16, 2020

Positive Crankcase Ventilation – PCV Valve Service at Fourth Street Automotive Has Video

Hello MARRERO! Did you know that the first federally-mandated emissions control device was introduced in the 1960's? The Positive Crankcase Ventilation valve, or PCV valve, has been installed in LA ve...
Published on: May 26, 2019