As your starter solenoid goes bad, you might hear the clicking sound and the slight movement in the starter solenoid happening, but you won’t see a corresponding starter rotation, and thus, the engine won’t start. In this case, the culprit could be a broken solenoid connection due to erosion, breakage, or dirt.
Place the metal blade of an insulated screwdriver across both metal contacts. This bypasses the solenoid and creates a direct connection between the starter motor and the ignition switch.
For irrigation applications, a solenoid is considered to be good if its resistance is between 20 – 60 ohms. It is best to compare resistance measurements to that of a new solenoid. Example, if a solenoid measures 44 ohms, it would be considered good because it is between 20 – 60 ohms.
The easiest way to check the starter on the vehicle is to use jumper cables to bypass the vehicle’s electrical system. … If it doesn’t, crank the engine, connect the black/negative jumper cable as a ground between the drivetrain and negative terminal of the battery. Touch the red cable to the starter’s positive terminal.
But a faulty solenoid that fails to make adequate electrical contact inside can also produce this tell-tale sound causing the battery to have low voltage unable to provide enough power to start your engine.
Test the Starter
It is under the hood, usually on the passenger side at the bottom of the motor next to the transmission. The ignition switch is a set of electrical contacts that activates the starter and usually is located on the steering column.
By jumping your starter solenoid, you are turning the screwdriver or other metal implement into a manual switch. … Plus, if you don’t get the screwdriver off of the contacts soon enough, you can burn out the starter motor. This is a dangerous procedure, so don’t do it unless you absolutely have to start the vehicle.
A starter solenoid is an electromagnet which is actuated to engage the starter motor of an internal combustion engine. … The starter solenoid is sometimes called the starter relay, but many cars reserve that name for a separate relay which supplies power to the starter solenoid.
Whacking it dislodges whatever is causing it to stick allowing it to make contact and power the starter motor. You don’t need to have the key turned at the same time. If you’re by yourself, just whack it a few times then then walk around and turn the key, repeat as necessary.
The only tool required in checking a starter relay is a multimeter. Get a multimeter and set it on an ohms scale. Place one of the probes on the ground cable and the other probe on the ignition circuit terminal. A good relay should be under 5 ohms.
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