Tony Harlin is a Master Gas and Diesel Diagnostic Technician with over 18 years of experience. He works full-time at a large independent automotive shop as a driveability and repair technician working on all types of vehicles with a focus on diesels. ASE certifications include A1-A9, L1 and L2, as well as X1.
Tony has a YouTube channel, “Nuts & Bolts with Tone,” with over 25,000 subscribers, devoted to automotive troubleshooting, repairs as well as tool demos and reviews. When not working on cars, Tony enjoys spending time with his three sons and wife in Sacramento, California.
Credentials:
Summary Static and dynamic transmission seals deteriorate over time because most oil seals are typically made from synthetic rubber that…
Summary A flood lead acid (FLA) battery has positive and negative plates made of lead that are submerged in a…
Summary The tire pressure monitoring sensor (TPMS) is a device that monitors a vehicle’s tire pressure. If the sensor detects…
Summary Brake line replacement costs vary between vehicles, but you can expect to spend anywhere between $5 and $220.Brake lines…
Summary The valve stem has a seal that prevents lubricant from leaking. It can either be a deflector or a…
Summary DRL or daytime running lights make your ride more visible during the day when passing through tunnels, under bridges,…
Summary A car defroster helps clear condensation and removes frost from a vehicle’s windshield and windows.Car defrosters use heated air…
Summary Battery fluid leaks and age could lead to corroded batteries.Using anti-corrosion battery washers and battery grease as well as…
Summary The timing belt tensioner secures the timing belt and keeps it tensioned.There are hydraulic and mechanical timing belt tensioners.The…
Summary Sealed Lead Acid batteries, or SLA batteries, are used to power electronics in vehicles because they’re maintenance-free and have…
Summary The brake master cylinder distributes pressure to the braking mechanism at each of the wheels. The two types of…
Summary The P3497 code stands for “Cylinder Deactivation System Bank 2,” which means there’s an issue in engine bank 2…
Summary The P015D code means “O2 sensor delayed response – lean to rich.” The code triggers when the vehicle’s oxygen…
Summary The P015A code stands for “Oxygen (O2) Sensor Delayed Response–Rich to Lean,” which means the powertrain control module (PCM)…
Summary Brake fluid is used to transfer the energy from the depressed brake pedal to the brake calipers.One of the…
Summary Steel wheels are sturdy, cheap, and often come with plastic hub caps to improve their appearance.Alloy wheels are made…
Summary In a front-wheel drive (FWD) system, the drive axle shafts transfer torque to the front drive wheels. This means…
Summary Consult the owner's and service manuals for the manufacturer's recommended underhood checks and follow safety measures.Check the engine oil,…