Common questions

What is a ballast ignition?

What is a ballast ignition?

The colder the weather or the more worn the starter motor, the more current it draws, the less there is passed to the coil to instigate ignition. The ballast-resisted system utilises a 6 (commonly called the ‘cold start’ system) or 9-volt coil instead of the older style 12-volt item.

How do you fix a ballast on a fluorescent light?

Checking for a Bad Ballast

  1. Power off the fixture. Go to your circuit breaker panel and power down the area that includes the lamp you want to check.
  2. Remove fluorescent bulbs from the fixture. Fixtures are made differently.
  3. Disconnect the ballast.
  4. Remove the ballast.
  5. Use a multimeter.

How does a ballast ignition system work in a car?

Ignition – Ballast ignition systems. When you hit the starter button/key, a massive drop in available current to the coil occurs as the starter motor does its thing. The colder the weather or the more worn the starter motor, the more current it draws, the less there is passed to the coil to instigate ignition.

Can a 12 volt ignition system work with a ballast resisted ignition system?

Running a 12-volt coil on a ballast-resisted system will produce a very weak spark – consequently the engine won’t run too well. Running a 6 or 9-volt coil on a 12-volt system will produce a healthier spark but will burn the coil out real quick.

Why does my car ignition not start up?

There may be a few reasons why the ignition won’t start the car. Some of them are mechanical (such as a dead battery) and some of them are transponder key related issues. Ignition Cylinder and Car Keys.

How does a ballast resistor work on a starter?

This is where the ballast resistor enters the picture. Through clever wiring, the power to the coils is always routed through the ballast resistor unless the starter is spinning – in which case the ballast is by-passed. The resistance value of the ballast resistor is calibrated to deliver the 7V or so expected by the coils at idle.

How can I tell if my car has a ballast ignition?

The only truly definite way of discovering which your car has is by testing the voltage at the coil lead feed with the ignition on. 12-volt says it’s the old system, 9-volt identifies it as ballast-resisted, 6-volt as the older ‘cold start’ set-up.

How does a ballasted ignition system work in a car?

The later ballasted ignition system used a modified coil that delivered a full power spark which was reduced by installing a ballast resistor or resistor wire in the power feed to the coil.

Running a 12-volt coil on a ballast-resisted system will produce a very weak spark – consequently the engine won’t run too well. Running a 6 or 9-volt coil on a 12-volt system will produce a healthier spark but will burn the coil out real quick.

What happens if your ballast resistor is not working?

If this happens, the professionals at YourMechanic will be able to measure the voltage coming from the ballast resistor and determine if you need a replacement. Once they read the voltage, they will let you know what condition your ballast resistor is in. If the ballast resistor is not working properly, the vehicle will not start.

Author Image
Ruth Doyle