What does no spark on coil pack test mean?
This result means one of two things: either that the spark plug wire is bad or the ignition coil pack is fried. You can find out for sure which one is fried with COIL PACK TEST 2. CASE 3: If you got a No spark result from two ‘Paired Cylinder’ spark plug wires. This usually means that the coil pack is bad on your mini-van, but not always.
How many spark plugs are in a coil pack?
To understand this phenomena (two coil pack towers from the same coil pack not sparking), you and I need to know that each coil pack fires spark to 2 spark plugs at the exact same time (this is known as a Waste Spark ignition system). Here are the specifics: Each coil pack feeds 4 spark plugs.
Why are two towers from the same coil pack not firing?
And so when you have 2 towers from the same coil pack not firing spark, it’s usually due to one of two reasons: 1.) the coil pack is bad or 2.) the ignition control module (ICM) has fried internally and is not activating that specific ignition coil within the coil pack (although it will activate the others).
How to test the coil pack on a Chrysler 3L?
Disconnect the spark plug wire from the spark plug that you’re gonna’ test and connect the HEI spark tester to the spark plug wire. Ground the HEI spark tester directly on the battery negative (-) terminal with a jump start cable. When ready, have your helper crank the engine as you observe the spark tester.
Why does my coil pack have no spark?
There are a few reasons for no spark, new coil pack could be defective, crank sensor, ignition module or bad wire in primary circuit, faulty ECM/PCM. You may have to have a good technician have a look, diagnose and estimate repair. Second link gives detailed instructions for testing and diagnosing coil pack.
When is the distributor replaced by the coil pack?
When the energy reaches the spark plugs, it starts the combustion process. In more modern cars today, the distributor is replaced by the coil pack. This is typically because the coil pack is more reliable and consistent than the distributor.
What makes up the bigger ignition coil pack?
As we said, the ignition coils make up the bigger coil pack. An ignition coil is an induction coil in a car’s ignition system. An induction coil is a spark coil that produces a high voltage from a low voltage supply.
What should the resistance of an ignition coil be?
Switch the meter’s resistance range to the 20K-ohm setting and attach the negative (black) meter lead to the center terminal of the coil. The reading here should be 11.00 or better, with 13.49 being about normal. If your coil reads under 11.00, then chances are pretty good that this is the reason you’re not getting any spark or a very weak one.