Quick Answer: What Are The Symptoms Of A Bad Ignition Relay?

What happens when the ignition relay goes bad?

Despite this, sometimes the ignition relay can fail due to wearing, accident, damage or exposure to water.

A bad ignition relay will not only cause starting problems to your vehicle, but it can also cause stalling of the vehicle, draining and damage to the battery, and power loss in the dashboard lights..

Where is the ignition relay located?

The ignition relay is one of the most important electronic relays found on modern vehicles. It is usually located in the fuse and relay panel beneath the bonnet, and is responsible for providing power to the vehicle’s ignition system, and some of the fuel system’s components.

How do I know if my ignition control module is bad?

How to Tell if You Have a Bad Ignition Control ModuleCheck engine light is on: The ECM monitors all parts of the vehicle that could affect emissions. … Engine is misfiring or running rough: An engine misfire results from incomplete combustion. … Stalling: A failing ignition module can occasionally prevent the engine from getting spark, causing it to stall.More items…•

What is a ignition control module?

The Ignition Control Module is a part of the ignition system. It manages the electrical current that is fed to the ignition coil in order for it to generate the right amount of voltage for the spark-plug to ignite the fuel mixture. … In turn, the ignition control module sends the input to the ignition coil to fire it up.

What happens when engine control module goes bad?

When the ECM is faulty or failing, it will throw off the timing of fuel settings of the engine. You may notice unexplained drops in fuel efficiency, or you may feel your vehicle struggling to shift. Any sudden change in your vehicle’s performance is reason enough to seek out the source of the problem.

What would cause an ignition control module to fail?

The common cause of one driver/transistor failing is a shorted ignition coil primary winding. This is a winding of wire within the ignition coil where each loop is separated by a very thin plastic coating.

What does a bad ignition relay sound like?

This problem may be attributed to a circuit that has failed, so no matter how many times you turn the key, the vehicle will not start. If the circuit has not yet completely failed, you may hear a clicking noise as you try to turn the key.

Does a relay click when it’s bad?

If you hear or feel the relay click, the relay and its wiring aren’t the problem. But if it’s not clicking, the problem could be in the relay itself or in the wiring. … Actually, unless the relay has a diode in it, it won’t matter if the polarity is switched; the electromagnet will be energized regardless.

How can you tell if the ignition switch is bad?

Put the ignition key into the ignition switch and crank the engine. If the engine cranks, then your ignition switch is obviously working fine. If the engine does not crank, and you hear a “click” when you first turn the key to the “III” position, then your ignition switch is not the problem.

What can a bad main relay cause?

If the main relay is not supplying the engine computer with the power it needs, then the engine will not be able to crank and run the right way. Failing to get the main relay replaced will usually lead to the car being unusable.