Bob's Mobil Repair
1081 A Sonoma Blvd, Vallejo, CA 94590 707.644.7797

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: Oct 27, 2024

Simple Answers from Bob's Mobil Repair for Vallejo: Cooling System

Question My engine never overheats.  Why should I get a cooling system service? Answer That’s a good question to ask, because if you don’t have the full answer you may end up in tr...
Published on: May 08, 2023

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: Nov 14, 2021

Thermostat

{{ image('MzU0') }} The thermostat is part of your cooling system. Vallejo residents' vehicle thermostats perform a similar function to the thermostats in their homes. At home, you set your...
Published on: May 25, 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: Apr 02, 2020

Bob's Mobil Repair 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: Sep 28, 2018

Air Blend Box

You push a few buttons or turn some knobs, and voila! You have air blowing on your feet or cool air chilling your face. But how does all that happen? Well, it's all thanks to ...
Published on: Aug 18, 2018

Radiator Fans

{{ image('MzU0') }} Vallejo 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 engin...
Published on: Jul 21, 2018