How to Test an Ignition Coil with a Multimeter

Insert one of the multimeter’s probes into the center opening of the coil, contacting the metal terminal inside the coil. Touch the second probe of the meter to the ignition coil’s grounding terminal. The meter should read 6,000 to 15,000 ohms. If it does not, the coil’s secondary winding is faulty.

What should the ohms be on a ignition coil?

Resistance can be measured with a Multimeter.

  • Set the multimeter to measure resistance (ohms).
  • Connect the positive lead to the positive terminal of the coil.
  • Connect the negative lead to the negative terminal.
  • A typical value would read 0.4 – 2 ohms.


What are two ways to test an ignition coil?

antennamediatorino.eu
You leave the ignition key on right after that you can either use the remote starter to crank the engine over or you can have an assistant turn it over whichever method you want to use.

How do you check an ignition coil to see if it’s good?

Use a spark tester to check the ignition coil.

  1. Plug the tester into the coil.
  2. Attach the ground wire.
  3. Plug in the coil connector.
  4. Adjust the spark gap to the correct measurement.
  5. Start the engine.
  6. If there’s spark, great, it works! If there’s no spark, it’s a bad coil.


What should a coil pack read on a multimeter?

Testing Coil Pack



Step 3: First, you have to place one port of the multimeter on the middle connector of the primary coil of the coil pack. Now the meter should read less than 2 ohms. If it’s true then the primary coil result is ok. Step 4: Now you have to measure the resistance of the secondary coil resistance.

How many ohms should a 12 volt ignition coil have?

You should have a resistance reading of at least 3-4.5 ohms. A bad coil will show a higher reading then 3-4.5. Next, place the red or black lead from the meter to the centre of the coil , and to either one of the terminals positive or negative. You want 9500-10000 Ohms, a little less is ok but no more.

How do you test a 12 volt coil with a multimeter?

Insert one of the multimeter’s probes into the center opening of the coil, contacting the metal terminal inside the coil. Touch the second probe of the meter to the ignition coil’s grounding terminal. The meter should read 6,000 to 15,000 ohms. If it does not, the coil’s secondary winding is faulty.

How do you tell if a coil is bad?

What Are the Signs of a Faulty Ignition Coil?

  1. Loss of Power. This is one of the first symptoms of ignition coil failure. …
  2. Check Engine Light On. …
  3. Poor Fuel Economy. …
  4. Backfiring. …
  5. Misfiring Engine. …
  6. Hard Starts and Stalling. …
  7. Spluttering and Coughing Sounds. …
  8. Jerking and Vibrating.