Radiator Archives - UnderhoodService
Solving Intermittent Overheating

New cooling systems anticipate and influence changes in coolant temperature.

Solving No Heat Complaints

Here are 10 guidelines for making sure a customers heat functions.

BMW Spark Plug Replacement

Here are a few things that you need to know before replacing spark plugs in a BMW.

Auxiliary Coolant Pumps

Don’t be fooled into thinking that these pumps will go away with the surge in hybrid and electric vehicle production.

Cavitation: Killer Of Water Pumps

The condition of the coolant has a direct relationship to cavitation in pumps.

Active Grille Shutter Service

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

First Spectra Premium-CAPA Certified Radiators Now Available

Manufactured at the Laval, Canada, factory, these radiators are the first cooling system aftermarket parts certified by the Certified Automotive Parts Association, according to the company.

VIDEO: Winter Effects On Radiators

Andrew Markel discusses how winter can be tough on radiators, and the importance of checking the radiator cap after replacement. Sponsored by Auto Value and Bumper to Bumper.

VIDEO: Why Are There Certain Coolants For Certain Vehicles?

Andrew Markel explains how coolant is not meant to be mixed or switched. There are certain coolants for certain vehicles that must be used for long engine and gasket life. Sponsored by Auto Value and Bumper to Bumper.

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VIDEO: Three Steps To Diagnose A Poor Heater Performance Complaint

A poor heater performance complaint from a car or truck owner can be caused by low coolant, a blocked heater core or an open thermostat. Andrew Markel discusses the diagnostic strategies for solving a cold driver complaint. Sponsored by Auto Value and Bumper to Bumper.

Electronically Controlled Thermostats: A New Take On Wax And Brass

An electronic thermostat can preemptively control the temperature the same way the fuel injection system can control the stoichiometric ratio in the combustion chamber by changing the pulse width of the fuel injector. By being able to control the temperature of the coolant, the engine management system can optimize engine performance so leaner combustion events can take place and cold start periods are minimized.

Volkswagen: Identifying And Mixing Factory Fill Engine Coolants

Coolants G11, G12, G12+ and G12++ have been replaced by an improved version. G13 coolant is introduced on all engines.

VW coolants G13