Dave's Garage Inc.
5454 W FOREST HOME AVE GREENFIELD, Wisconsin 53220 | (414) 321-5450

Engine and Exhaust

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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: Jul 27, 2025

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: Apr 27, 2025

Exhaust Service at Dave's Garage Inc.

Driving around Greenfield, 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: Safely...
Published on: Nov 20, 2023

Exhaust

We've all heard a car or truck in our Greenfield neighborhoods that needs a new muffler. But there's more to the exhaust system than just the muffler.{{ image('https://s3.amazonaws.com/www.autonettv.c...
Published on: Mar 09, 2022

Simple Answers from Dave's Garage Inc. for Greenfield: Exhaust Service

{{ image('MzQy') }} Question:My car failed its emissions test – what do I need to do?Dave's Garage Inc. Answer:Let's get this out of the way: a leak in your exhaust system could be deadly....
Published on: Apr 10, 2020

Oxygen Sensor

Many people hear the term “oxygen sensor" and figure it must have something to do with sensing oxygen. But they don’t really know much beyond that. Let’s break it down; your vehicle ...
Published on: May 31, 2019

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: Dec 13, 2018

Diesel Emissions Maintenance

You’ve probably noticed a lot more vehicles being offered with diesel engines.  Diesel is a very popular choice in much of the world.  North America is just starting to close the gap b...
Published on: Oct 15, 2015