J4 Automotive
3 South Lane Avenue, East Helena, MT 59635 406.227.8622

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: Nov 10, 2024

Heater Core

{{ image('MzU0') }} East Helena 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...
Published on: Oct 05, 2021

J4 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: Sep 20, 2021

Cooling System

We’re often asked questions about the cooling system – the system that cools your engine and keeps it at the proper operating temperature.  Let’s examine the topic in two areas:...
Published on: Aug 23, 2021

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: Sep 19, 2020

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: May 31, 2020

Radiator Fans

{{ image('MzU0') }} East Helena residents who are old enough have probably heard the term “fan belt”. Back in the day the radiator fan in your vehicle was turned by a belt driven by the e...
Published on: Dec 25, 2019

J4 Automotive Tech Question On Your Head Gasket

Question My name is Landon.  I bought a new minivan and it started smoking out the tail pipe.  They said my head gasket went out.  What can I do to prevent this from happening again? ...
Published on: Jun 30, 2019