I attached the list of things that this fuse controls. The way to figure this out is to unplug these things one at a time and drive the vehicle until the fuse no longer pops. Clearly there are other ways like tracing wiring or testing coils with oscilloscopes but most people don't have the time and tools to do this. Because of this it is best to get a bunch of 30 amp fuses and unhook each item one at a time until you find it.
Based on what it is doing, I suspect you have a failing coil as it is pretty common for a failing/shorted coil to pop a fuse because the secondary side is shorted to the primary side. The primary side of the coil is low voltage and the secondary is high voltage. When it is shorted it overloads the circuit and pops the fuse.
So you should have what are called coil on plugs on this engine so you just need to locate each coil and unplug them one at a time. There is no issue with running on 7 cylinders for a short time just to test this out. So I would bring the fuses with you and once it pops, unplug the next coil and plug that one back in while you are on the test drive rather then coming all the way back on 7 cylinders or at least plug that one back in once it pops and then drive back. Basically, just limit the amount of time with it unplugged. This will avoid driving any further then you need to and speed this process up a little bit.
Let me know if you have questions. Thanks
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Tuesday, September 15th, 2020 AT 5:38 PM