Magazine Archives - Page 16 of 69 - UnderhoodService
Looking For The Positive Side Of The COVID-19 Crisis

There has been an uptick in technicians engaging in technical training on the Underhood Service website.

VW DSG 02E Transmission: A Diagnostic Pre-Checklist

This particular transmission is frequently powered by a diesel engine.

Diagnosing Secondary Ignition Problems

Kilovolt demand can vary widely according to air/fuel ratio, running compression and spark timing.

You Are Essential In This Chaotic Environment

You’re the reason effective, affordable and reliable transportation continues across our country even through tough times.

GM Engine Noises During Cold Start, Warm Engine Operation

The new Small Block Generation 5 engine family incorporates a new fuel system technology known as direct injection (DI).

Ultimate Underhood – Gasoline Particulate Filters

Just like a DPF, a gasoline particulate filter (GPF) traps and stores soot particles in the exhaust stream.

Nissan VQ V6 Water Pump Installation Tips

Book time on this job can range from 2-3 hours, depending on the model and layout. Unfortunately, there are no shortcuts.

Cabin Air Filter Replacement Tips

The cabin air filter is generally considered an integral, but often overlooked part of the heating and A/C system.

Engine Compression Testing

Read this article to find out how to reduce rotating friction and increase running compression.

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.