Depending on year, there's some phone apps that can do everything the big expensive scanners will do.
AE is said to be great.
Usually the cps is a go/no go type of deal. If running the wipers makes it shut off, that's a good sign to go with a different brand. There's been extensive research showing the Motorcraft isn't the best one, so search around. (Advance auto)
ICP sensor you can unplug. It'll default to a set pressure.
The 6.0 guys live off rev-x like it's crack. I've used hot shots secret, works well also.
So fluids, filters, check fuel pressure, ohm UVCH'S, clean ebp tube and sensor, and clean fpr screens, would be a good start.
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