Thermostat Archives - Tomorrows Technician
Auxiliary Coolant Pumps

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

Automotive Thermostats Through the Years

They still have wax, but today’s thermostats use electronics to deliver precise temperature control.

Diagnosing Electronically Controlled Thermostats

On these systems, there are two ways the engine management module knows there is a problem.

Servicing Electronically Controlled Thermostats

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

VIDEO: Electronically Controlled Thermostats

Shop owner Donny Seyfer explores the operation for these next-generation thermostats. This video is sponsored by MAHLE.

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.

VIDEO: Failure Patterns In Thermostats

Andrew Markel discusses the failure patterns of thermostats, and how it can eventually affect several other systems of the vehicle.

VIDEO: Thermostats Only Fail In The Best Way Possible

Andrew Markel discusses the importance of engine cooling, especially after the failure of a thermostat.

VIDEO: Thermostats And Oil Sludging

Andrew Markel explains how improper temperature control in the engine can lead to oil sludging in the valvetrain.

VIDEO: Heating Issues? Don’t Assume It’s The Thermostat

Andrew Markel explains how problems with the cabin heating system may not be directly related to the thermostat.

VIDEO: Overheating In The Summer Heat

Andrew Markel shows how you can diagnose the overheating vehicles that will be coming to your shop in the hot weather.

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.