John Chak's Automotive
3019 Loy Lake Road, Denison, TX 75020 903.465.4244

Engine and Exhaust

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How Cool is That! (Coolant level sensor replacement)

Your vehicle’s engine runs hot.  It should, since it’s a series of little explosions that create the power that gets you going where you want to go.  To keep the engine cool, eng...
Published on: Feb 02, 2025

Heater Core

{{ image('MzU0') }} Denison drivers may wonder where the air in a vehicle's passenger compartment comes from. Well, as your engine starts to warm up, it also warms the coolant/ant...
Published on: Oct 04, 2022

Radiator Fans

If you’re old enough, you’ve heard the term “fan belt." Back in the day, the radiator fan in your vehicle was turned by a belt driven by the engine. There are still belt driven fans,...
Published on: Aug 12, 2022

John Chak's Automotive Tech Question On Your Cooling System

Question I was driving down the freeway and smoke started coming out of my car.  I pulled over and called my husband.  I had to be towed to my mechanic.  He said my car had overheated....
Published on: Jan 30, 2022

John Chak's Automotive Advice on Your Cooling System

Last week I was out running errands and my temperature warning light came on – total panic!  I pulled over and my car was overheating After it cooled down, I went right in to my service ce...
Published on: Dec 27, 2021

Cooling System Repairs

We all know how important the cooling system is. Coolant/antifreeze circulates around the engine, absorbs heat, and then dissipates it in the radiator.  Cooling system failure can cause extensive...
Published on: Jul 09, 2020

The Hot Switch (Coolant Vacuum Valve Switch)

When the weather gets cooler, you want the cabin of your vehicle to stay warm.  When you switch on the heat, you may find the air that comes out of the vents just isn't hot.  The problem co...
Published on: Dec 27, 2019

Thermostat

The thermostat is an important part of your cooling system. Your vehicle’s thermostat performs a similar function to the thermostat in your home. At home, you set your thermostat to maintain a c...
Published on: Dec 06, 2019