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You test an ignition coil by checking the resistance with an ohm meter. The resistance values should be something like, Primary winding .3 to 1 ohms, Secondary winding 8,000 to 11,500 ohms.
Depending on the accuracy of your Ohm meter, yes... it could very well be shorted.
check with meter to see resistance value (ohms)should read 3.4
get a volt meter. turn it on. put one end on the +. the other end on the -. if you get a number greater than 12 with the car running then your golden.
you cant you can test it with an ohm meter if it reads 000 theres no resistance and its bad if it reads an open its bad you want around a couple hundred ohms
The 3.5 has coil packs over the spark plugs (called a COP - coil over plug). When I changed my plugs a while back, I visually inspected the coil packs for cracks, and tested the coil resistance. If I remember correctly, they measured a few ohms (can't remember how many, something like 10 ohms), and all were identicle, so I assumed they were OK. If a coil is open, it would measure high resistance. It is unlikely a coil will completely short out, but I'd suspect a coil that reads much different from the others using a DC Volt meter.
Symptoms of a bad coil pack can vary. Most common is a Misfire which will turn on the check engine light. the most common way to test a coil pack is with a volt meter set to OHMS
if you mean the ignition coil packs yes you can test. you need to take them out of the car. then using an ohmmeter, check the resistance between the primary terminals on the underside of the coil. the resistance should be 0.50-0.90 ohms. then check the resistance between the secondary terminals (were the plug wires go). it should be 5000-10,000 ohms.
Need to check the coil wire, and all other ignition parts.
The primary resistance is= 0.5 to 0.7 ohms. The secondary resistance is = 20 to 30 K ohms. Tom L.
At 6500-11500 ohms, the resistance on the ignition coil is okay. If the resistance exceeds 11500 or below 6500, the coil requires replacement.
If you have an Ohm meter you will want to measure the resistance (ohms) of the Primary and Secondary sides of the coil pack and compare your readings to the Specifications for the vehicle.