Cottman Transmission & Total Auto Care
11780 Holly Auto Center Lane, Waldorf, MD 20601 301.645.4055
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Why is Air Not Coming Out of My Vents?

You climb inside your vehicle, start the ignition, and reach for the fan control for the heating or air conditioning.  But when you try to crank it up, no air comes out of the vents. It can make ...
Published on: Apr 19, 2026

When Your Tires are Tired (Tire Replacement)

Tires are so reliable these days that few drivers pay much attention to them.  But tires wear out.  They have a tough job since they are the only point of contact between your vehicle and th...
Published on: Apr 12, 2026

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: Apr 06, 2026

How Cool is That! (Coolant level sensor replacement)

Your vehicle’s engine runs hot.  It should, since it’s a series of little explosions that create the power that gets you going where you want to go.  To keep the engine cool, eng...
Published on: Mar 16, 2025

Easy on the Wheel (Power Steering)

Steering a vehicle these days doesn't take much effort, but if you got behind the wheel back before power steering was invented, you'd need to practically have the strength of Hercules to turn the whe...
Published on: Mar 09, 2025

Rotation Explanation (Tire Rotation Patterns)

You may notice that when you get your vehicle's oil changed, your service adviser may recommend that you have your tires rotated at the same time.  The reasons are simple.  That will allow y...
Published on: Mar 02, 2025

A Clean Sweep (Fuel Injector Cleaning)

Your vehicle gets its power from burning fuel, usually gasoline, and it counts on something called fuel injectors to send gas to the engine in a spray that is easy to ignite.  It’s a precis...
Published on: Feb 23, 2025

Straight to the Point (Alignment Signs of Problems)

It’s just common sense that your vehicle will drive better if all the wheels are lined up with each other and the road the way the engineers intended.  When they’re not, that is calle...
Published on: Feb 16, 2025
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