General
Dual Clutch Gearboxes Explained: DSG, DCT, PDK & EDC
DSG, S tronic, DCT, PDK, EDC and PowerShift are all brand names for the same underlying idea: a dual clutch gearbox, where two clutches…
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Category: General
General
Which Automatic Gearbox Type Do You Have?
Almost every automatic car in the UK uses one of three gearbox types: a torque converter automatic, a dual clutch gearbox such as a…
General
How an Automatic Gearbox Actually Works
An automatic gearbox does three things: it connects the engine to the wheels through a fluid coupling called a torque converter, it creates different…
General
Flashing D Light or Gear Indicator: What It Means
A flashing D light or PRNDS display usually means the gearbox control unit has logged a fault and the car may be in limp…
General
Gearbox Slipping Only When Hot: What That Tells You
A transmission that slips only when hot is describing its own fault with unusual precision: the hydraulic system can hold pressure with cold, thick…
General
Gearstick Stuck in Park: Shift Lock Causes and Fixes
A gearstick stuck in Park is usually a shift lock problem rather than a gearbox failure, and the most common causes are a faulty…
General
Hard Shifting When Cold: Why Automatic Gearboxes Struggle
An automatic that shifts hard when cold but smooths out once warm is usually telling you about its fluid, and after that its valve…
General
Gearbox Vibration at Motorway Speeds: Explained
A vibration at motorway speeds that comes from the transmission is most often torque converter lock up shudder, a worn driveshaft or propshaft, or…
General
Automatic Gearbox Noise When Shifting Park to Drive
A clunk when shifting from Park to Drive or Reverse is usually driveline lash being taken up, and the most common causes are worn…
General
Automatic car revving but not accelerating?
If your automatic is revving but not accelerating, the gearbox is usually slipping, most often due to worn clutches, low fluid or a CVT…