Technical Guides
Knock Sensor Explained
Technical information on what the Knock Sensor (KS) does on the car and how it works. A faulty KS can lead to poor performance and bad engine running.
Coolant Temperature Sensor Explained
Technical information on what the Coolant Temperature Sensor (CTS) does on the car and how it works. A faulty CTS can lead to poor or no idling at all!
Porous Heads Explained
The cylinder head of the engine has small thin veins cast inside which caries water (the coolant) and the oil. Unfortunately some heads were found to be porous were these two liquids mixed. This means an engine rebuild. Some engines in the Astra, Cavalier and Calibra had these faulty heads. Read this guide to find out if yours is affected too!
Car Batteries Explained
The car battery is a storage device, which stores energy. But how does it work and how do you take care of it? Plus what do you look for when buying another one and how to jump start the car if it goes dead. All is explained in this guide.
Idle Speed Control Valve (ISCV)
The idle speed control valve (ISCV) are fitted to EMU controlled cars which automatically adjust and control the idle speed of your car. This article explains how it works and how to recognise what type is fitted to your car.
Reading ECU Fault Codes
Is your engine injection fueled? Then it needs an ECU to do this and hence it is capable on storing ECU fault codes. If the ECU warning light comes on then you can read the fault code with a paper clip and find out what the problem is.