Cooling Archives - UnderhoodService
Navigating the Transition to R1234yf 

Learn the technical aspects and implications of this transition.

R1234yf refrigerant
Inspection Tips For Chain-Driven Water Pumps

If one water pump fails sooner and is replaced without an investigation, the new pump is likely doomed.

Water pump feature
Why Does Engine Coolant Need Replacement?

Two specifications can be used to justify replacement — the condition of the additive package & the freezing point.

Improving Turbocharger Longevity

It is estimated that by 2022, 50% or more of vehicles sold in the U.S. will have one or more turbochargers under the hood.

Engine Cooling System: Hose Inspection and Replacement

One bad hose can cause an engine malfunction. This video is sponsored by Continental.

Water Pump Replacement: Nissan VQ-35 Series

At the top of the list of the most difficult water pumps to ­replace are those found in the Nissan VQ-Series V6 engines. The pump is turned by the timing chain and is nestled in the engine block. This can make for a very difficult job no matter if the engine is mounted transversely or longitudinally.

Servicing Electronically Controlled Thermostats

When the heater circuit fails, most of the time it will create an open circuit.

Active Grille Shutter Service

Mounted ahead of the radiator, active grille shutters have motorized horizontal vanes that can rotate to block airflow.

Prepare For R1234yf Now

Currently, there are approximately 35 million vehicles on the road with R1234yf in the HVAC system.

VIDEO: Damaging Engine Gaskets Due To Over Pressurization

Almost every technician has a cooling system pressure tester in their toolboxes. This video is sponsored by MAHLE.

US Motor Works LLC Adds To Cooling Lineup

The latest 6 new water pumps are now in stock and ready to order.

VIDEO: Replace The Thermostat With Every Cooling System Job

Andrew Markel discusses the limited lifespan of thermostats, and how that makes it necessary to replace the thermostat as part of a cooling system task. Sponsored by Auto Value and Bumper to Bumper.