General
What Is a Mild Hybrid (MHEV)? How It Works
A mild hybrid, or MHEV, is an ordinary petrol or diesel car with a small electric motor and battery that help the engine but…
Archive
Category: General
General
Gearbox Diagnostic Codes Explained: Common P07xx Codes and What They Mean
Gearbox fault codes beginning P07, along with their P08 and P09 neighbours, are the transmission’s section of the standard OBD fault code system, and…
General
Second-Hand Gearboxes: The Risks Nobody Mentions
A second hand gearbox from a breaker looks like the bargain of the repair world, often a fraction of any other option, and sometimes…
General
Gearbox Reconditioning vs Rebuild vs Replacement: The Real Differences
When a gearbox reaches the end of the road, you have three real options: a rebuild of your own unit, a reconditioned exchange gearbox,…
General
Adaptive Gearboxes: Why Your Automatic Learns Your Driving Style
Modern automatics are adaptive: the transmission control unit continuously learns, adjusting shift points, clutch pressures and engagement timing to suit your driving style and…
General
Gearbox ECU and TCU Faults: Software Problems vs Mechanical Ones
The transmission control unit, or TCU, is the computer that decides every gear change your automatic makes, and when it develops a fault the…
General
Solenoid Faults in Automatic Gearboxes: The Complete Guide
Shift solenoids are the electrically operated valves that execute every gear change in an automatic, and when one fails the gearbox loses specific gears,…
General
Valve Body Faults: Symptoms, Causes and Repair Options
The valve body is the hydraulic switchboard of an automatic gearbox, and when it wears, the car develops exactly the faults drivers describe most:…
General
Mechatronic Unit Explained: What It Does and How It Fails
A mechatronic unit is the combined brain and muscle of a modern automatic: the transmission control computer, the solenoids and the hydraulic valve body…
General
Torque Converter Problems: What It Does and How It Fails
The torque converter is the fluid coupling between the engine and an automatic gearbox: it lets the engine idle while the car is stopped…