2020 Editions Archives - Page 8 of 10 - UnderhoodService
Factory Air Freshener

The system uses air quality sensors outside and inside the vehicle.

Take The Wheel

Vehicles today with telematics collect 256 GB of data per hour. That’s equivalent to the power of roughly 30 computers.

Understanding Five Volt Reference Signals

A 5-volt reference flows through a sensor with a resistance that varies according to changes in temp., pressure or position.

The Complexities Of Modern Timing

The technology that leads to more fuel efficiency and performance also means increased complexity with timing components.

Auto Service The Way It Used To Be

The auto service business has definitely changed over the decades, but in some ways the story probably has stayed the same.

Volts And Amps: It’s Not About How Many, It’s About How Long

With “the rest of the story” in mind, let’s review how we measure cold-cranking amps, amp/hours and reserve capacity.

Vehicle Inspection Red Flags

Inspecting these 12 things will keep your customers safe and happy.

What Is This On The Frame Rail Of The New Dodge Ram?

Active-Tuned Mass Modules (ATMM) mounted on the frame rails search out unfavorable vibrations and apply countermeasures.

LTF And STF Fuel Trim Feedback Loops

How to understand rich, lean and somewhere in between.

Chrysler’s Totally Integrated Power Module Simplifies Circuits

The symptoms of a failing TIPM can vary depending on the vehicle. Check out your options for this repair.

TPMS Diagnostic, Replacement Tips

Using new TPMS tools, you can have several options to replace and reprogram a sensor.

The Fight For The OBDII Port

Some techs have noticed coverage on some newer vehicles is not that great, they can’t access modules or tests are missing.