What do I need to test my coil pack?
You need to use ohm meter to test the coil pack for continuity. Make sure you have the approximate ohm values for the coil pack. To find this information, research your car’s engine on the Internet or purchase a Chilton’s or Haynes manual to find out what the mega ohms reading on the coil pack should be.
Where does the voltage from the coil pack go?
When the electronic control module (the car computer) sends the signal to the ignition control, the voltage is released from the coil pack through the spark plug cables to the spark plug.
How to test ignition coil pack-misfire?
If you’re looking for the article to test the ignition coil packs on the 3.1L and 3.4L V6 GM engines, go here: GM Coil Pack Test (3.1 & 3.4 V-6 Engines). You can find this tutorial in Spanish here: Cómo Probar las Bobinas de Encendido (GM 3.8L) (at: autotecnico-online.com ).
How many coils are needed to check primary resistance?
2 wire coils Direct access to coil primary allows for measurement of primary resistance 2 wire coils Some coils allow for measurement of secondary resistance 2 wire coils Many coils place a diode between the primary and secondary circuits Secondary resistance check unavailable
How to test the resistance of a spark plug?
Tools 1 Spark Plug Wire Puller (For older vehicles without coil packs) 2 Multimeter (for resistance test) 3 Spark Plug Socket 4 Sockets (for cars with coil packs)
What do you need to know about ignition coil failure?
Check your high tension leads (HT Leads). They run between the distributor and spark plugs. Ignition coil failures result in 1 or more spark plugs not receiving the appropriate amount of charge. If you have trouble starting your vehicle in the cold, this is a good sign of potential ignition coil failure.
What causes a high voltage pulse in the ignition coil?
The very fast current direction caused by the contact breaker changes the magnetic field in the coil and induces a voltage pulse, which is transformed into a high-voltage pulse by the secondary winding. This passes through the ignition cable to the spark plug’s spark gap and ignites the fuel-air mixture in a gasoline engine.