Systems
How Do Manufacturers Mark Car Glass? Reading Automotive Glass Markings
Learn how manufacturers mark car glass: maker and approval codes, date codes, laminated vs tempered and AS ratings, and how markings help match a replacement.
Car blog Page 798
Practical automotive articles on maintenance, diagnostics, vehicle systems, buying used cars, tires and electric driving.
Systems
Systems
Why Does Dirt Build Up in Certain Aero Areas?
Learn how flow separation and tire spray paths create car dirt patterns on tailgates, lower doors and mirrors, and how owners can clean these areas effectively.
Tires and wheels
What Is Wheel Runout? Roundness, Vibration and Measurement Explained
What is wheel runout? Learn how radial and lateral runout affect roundness, why they cause vibration, and how technicians measure wheel and tire runout.
Troubleshooting
What Is a Potentiometer Sensor in a Car? Resistance, Position and Wear
Learn what a potentiometer sensor in a car is, how variable resistance reports position to the control module, why the sliding contact wears, and what that means for diagnosis.
Maintenance
How Does an Odor Neutralizer Differ From a Fragrance?
Learn how car odor neutralizers trap or change odor molecules while fragrances only mask them, why source removal comes first, and where both fall short.
Systems
What Is a Progressive-Rate Suspension Spring?
Learn what a progressive-rate suspension spring is, how its stiffness changes with compression, how it affects ride comfort, and where it is used.
Systems
Why Does AM Radio Sound Different From FM in a Car?
AM and FM car radio sound different because of modulation, interference, and bandwidth. Learn why AM sounds muffled and noisy while FM sounds clearer.
Systems
What Is a Vacuum Wiper Motor? How Classic Car Vacuum Wipers Work
Learn what a vacuum wiper motor is, how engine vacuum drives classic car wipers, why their speed changes with throttle, and what restoration involves.
Electric and hybrid
What Is a Belt-Starter Generator? Belt Drive, Restart and Regeneration Explained
Learn what a belt-starter generator is, how it connects through the accessory belt, restarts the engine smoothly, and recovers energy in mild hybrid vehicles.
Systems
How Does Ride Height Change Airflow Under a Car?
Learn how ride height changes airflow under a car, how speed and load shift the underbody gap, and why designers balance clearance, drag and lift.
Tires and wheels
Why Do Wheels Crack Near Spokes? Loads, Impacts and Inspection
Why do wheels crack near spokes? Learn how cyclic loads, pothole and curb impacts, and stress concentration at spoke roots lead to cracks, and how to inspect for them.
Troubleshooting
How Does a Wheel-Speed Sensor Detect Rotation?
Learn how a wheel-speed sensor detects rotation with a tone ring, how pulse frequency reflects wheel speed, and how ABS uses the signal to prevent lockup.
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