AutoTools blog
Long-form, practical articles on maintenance, diagnostics, tires, brakes, fuel economy and buying a used car — written for people who work with their hands.
12 Reasons Your Check Engine Light Might Be On
The light came on at 6:42 on a Tuesday morning, halfway through a left turn onto the highway ramp, and I did what everyone does: I stared at it like it had personally insulted my family.
Read the article →How to Know When Your Tires Need to Be Replaced
You can check your own tires in about 15 minutes with a coin, a pressure gauge and a flashlight. By the end of this guide you will know how to read tread depth, spot the damage that means "replace now," decode the numbers on your sidewall, and judge whether that slow leak is a cheap fix or a new-ti…
Read the article →What Does It Mean When Your Car Won't Start?
You turn the key or push the button, and nothing. Or worse, that awful click-click-click. Your stomach drops because you know this is going to cost you time, money, or both.
Read the article →Why Is My Car Shaking? 8 Common Causes Explained
Your coffee is sitting in the cupholder, and it looks like it's trying to escape. Maybe the steering wheel vibrates at highway speed. Maybe the whole cabin shudders when you brake. Either way, a shaking car is one of those problems you can feel in your teeth, and it never fixes itself.
Read the article →10 Car Noises You Should Never Ignore
Your car talks to you constantly. Most of the time it's mumbling, and you tune it out like a radio ad. Then one day it screams, and you're staring at a repair bill that could have been a $40 part three months ago.
Read the article →Composants d'un moteur de voiture : guide complet des pièces, fonctions, problèmes et solutions
Le moteur thermique est le cœur de la voiture. Il transforme le carburant en énergie mécanique grâce au cycle à quatre temps : admission, compression, combustion et échappement. Il est composé de nombreuses pièces essentielles comme le bloc moteur, la culasse, les pistons, le vilebrequin, les arbres à cames, les soupapes, ainsi que les systèmes d’admission, d’allumage, de lubrification et de refroidissement.
Read the article →Car Engine Components Explained: The Complete Guide to Parts, Functions, Problems, and Solutions
Your car’s engine is a complex system of parts working together to turn fuel into motion. This complete guide breaks down every major car engine component from the engine block, cylinder head, and DOHC valvetrain to pistons, crankshaft, timing system, fuel delivery, ignition, exhaust, lubrication, and cooling. You’ll also learn common engine problems, warning signs you should never ignore, diagnostic steps, and maintenance tips to keep your engine running reliably
Read the article →How Car Key Programming Works: The Complete Beginner's Guide
A car key used to be a piece of metal. Now it is a small computer that talks to your car, and when that conversation breaks, the car simply refuses to start. After reading this guide you will understand what key programming actually is, you will know when you can do it yourself with a scan tool and…
Read the article →Car Key Programming Explained: The Ultimate Beginner's Guide
By the end of this guide you'll know whether your key can be programmed at home, how a transponder key actually talks to your car, and the exact order of steps to pair a new key without paying a dealer two hours of labor. For a simple job on a car that already has one working key, budget 15 to 40 m…
Read the article →Quick answers?
Prefer step-by-step? See the guides or the encyclopedia.