The ECU signals the fuel pump to run when you turn the ignition key to the start position. The throttle position sensor helps the ECU determine whether the engine is idling, accelerating or at full throttle. Then, the ECU adjusts the fuel mixture to suit. Then, it delivers fuel under pressure to the top of the fuel injector. This delivers fuel in a fine spray into the induction system. The crank angle sensor gives the ECU an indication of engine speed and piston position. This is to help the ECU determine injection timing.
Engine management system also use the ignition system. It controls spark timing which results in optimised performance and emission levels. Most modern cars have a direct ignition system. It uses an ignition coil for each cylinder. The ECU fires the coil at the correct time using references from various sensors.
Likewise, the ECU performs millions of calculations each second. This includes looking up values in tables, calculating the results of long equations. This is to decide on the best spark timing and determining how long the fuel injector is open. The ECU does all of this to ensure the lowest emissions and best mileage.

We perform a series of balances and checks to make sure there are no problems with your air conditioner. If we detect a problem, then we can undertake the necessary repairs. Our experienced auto mechanics can supply and fit vehicle/heavy vehicle AC compressors.
We can repair or replace the following AC parts: AC Components, AC Condensers, AC Evaporators, AC Filters, AC Desiccant Bags, AC Receiver Driers, AC Tx Valves, AC Orifice Tubes, AC Electronics, Complete AC systems.

Our auto mechanic team have been well-trained in heavy vehicle auto electrical repairs. We also specialise in air conditioning repairs.

We take a look at your car’s engine control unit (ECU), and check the electrical signals from sensors. This allows us to calculate the correct fuel/air mixture to be delivered to the engine, and if richer or leaner fuel mixtures are required.

Our specialists are trained to diagnose and repair any electrical fault, small or large.

Our professional and qualified auto-electricians can safely repair or replace your electric brakes. We offer Electric Brake control units from all the leading brands. These include Redarc, Tekonsha, Elec Brakes, Haymen Reese, GSL, Hopkins, and ARK.

We provide electrical repairs for almost any equipment on vessels of all sizes. Whatever your marine electrical needs, we’ve got you covered.

Sandgate Auto Electrics is a RACQ approved mechanic since 1973. We pride ourselves on being an approved auto electrician and auto mechanic who you can trust.
We also offer full repairs for the following:
Sandgate Auto Electrics stock a huge range of batteries, accessories and systems. We stock all the top manufacturers covering all price points. No matter what type of battery you need, we have got you covered.
Batteries include: Motor Bike Batteries, 4WD Batteries, Boat Batteries, Golf Cart Batteries, Caravan Batteries, RV Batteries, Vehicle Batteries, Remote Batteries, Deep Cycle Batteries, Lithium Batteries, Calcium Batteries, AGM Batteries, and Flooded Batteries.
We also sell Battery Boxes, Dual Battery Brackets, and Dual Battery systems. As well as battery management systems from Redarc, CTek, Bainbridge, Projecta, Ironman, xantrex, enerdrive, victron energy, and electro parts.
Contact us or visit our shop if you need expert opinion on car repairs.