customer service Archives - UnderhoodService
Power Window Regulator and Motor Service

Power windows are great as long as they roll up and down when commanded to do so.

Throttle-By-Wire Diagnostics

Throttle-by-wire systems proactively manage the air and fuel going into the combustion chamber.

Acura Turbo Engine Service

It is important to check the operation of the solenoids that control vacuum to the actuators.

Solving Intermittent Overheating

New cooling systems anticipate and influence changes in coolant temperature.

Ignition Systems

The ignition coil is a very simple and robust circuit.

The August Digital Edition Is Available Today

Each issue includes technical content from Underhood Service and other ShopOwner channels.

HV/EV Battery Pack Replacements

It is difficult to say when a battery pack will need to be replaced.

Lifter Deactivation

The area of contact between the lifters and cam lobes is the highest loaded surface inside an engine.

Road Usage Taxes and Right To Repair

The federal gas tax has been around since 1932, and some state fuel taxes even longer.

Diagnosing Crankshaft Position Sensors

Modern engines need to not only know the position of the crankshaft, but the position of the camshafts.

Spark Plug Evolution

Spark plugs have changed over the years.

Compressor Oil for R1234yf

Working on R-1234yf systems is not that different from the R-134a variety.