Fault Codes & Electrics Dorchester

Sensors
Electronically controlled sensors for air flow, temperature and oxygen tested and replaced
Electrical Components Replaced Dorchester
Alternators, starter motors, relays, wiper motors and most electrical components supplied and fitted Dorchester
Dorchester Fault code reading and diagnostics
Electrical faults investigated and repaired in the Dorchester area

Alternators Dorchester

Starter Motor Dorchester
When the ignition system is initiated; an electrical signal switches a relay-solenoid to send power to the starter motor - The starter motor then engages the drive gear to turn and start your engine
Belt Drive
Most alternators are belt driven from the engine and require minimal maintenance other than changing the drive belt at the appropriate service interval
Relays Dorchester
Relays are electric switches that typically use a small current or voltage in one circuit to close a switch that allows a much larger current to flow in a second circuit
Battery Warning Light
Once your car has been started; if the battery warning light remains on then there could be a problem with the alternator-charging system or the battery itself
Power Train Control Module (PCM) & Electronic Control Unit
The engine management system will take control of regulating the output voltage from the alternator by switching the field current on and off with millisecond precision
Car Won't Start
Most ignition problems are caused by battery failure or poor connection: Other causes include starter motor,fuse or relay failure
Dorchester Alternator Repairs
Alternators generate an alternating curent (AC) rather than the direct current (DC) used by automotive electrical systems; in order to convert AC to DC an array of diodes and rectifiers take the negative part of the voltge and invert it: A voltage regulator then maintains the 13 to 15 Volt power ouput needed to charge the battery nd run the autoelectrical systems

Engine Won't Turn Over

• Engine seized
• Faulty ignition switch
• Dead or Flat Battery
• Poor electrical Contact

Engine Turns Over but Won't Start

• No Fuel
• Blown fuel pump fuse
• ECM or PCM fuse blown or shorted
• Fuel pump relay faulty
• Fuel Pump broken
• Immobiliser faulty

Fuses Relays and Connections

Blown Fuse
When parts of the electrical system fail then often the problem can be traced to a blown fuse or relay
Corroded Joints
Corroded joints can lead to connection problems and may be caused by water ingress or a mechanically loose joint sparking and oxidising

Dorchester Electrical Testing and Fitting

Dorchester Electrical Components
Electrical faults repaired using OEM components - Critical sensors checked e.g. Lambda sensors, air flow meters etc
Dorchester Autoelectrics - OBD & OBD II
Dorchester electrical faults diagnosed - OBD fault finding - engine fault codes checked & service lights reset - ECU problems diagnosed, key re-coding and CANBUS systems checked
Dorchester Alternators
Replacement Dorchester alternators fitted
Dorchester Cooling System
Replacement Dorchester radiators fitted, cooling system pipework inspected for leaks and cooling fluid replaced to keep your Dorchester engine at its optimal operating temperature
Dorchester Engine Servicing & Repair
Engine repairs, cylinder head skimming, valves & pistons replaced Dorchester
Dorchester Starter Motors
Replacement Dorchester Starter motors installed
Dorchester Performance Spares Fitted
OEM replacement parts fitted or upgraded with alternative performance parts such as suspension kits and air filters
Dorchester Fuel Pumps
Often replaced at a milestone service if the fuel pump is operated by the Timing belt