use brake cleaner on the maf
If you're going to splice, do it proper and solder it in with shrink tube to cover it. It'll be a much more stable repair.
EDIT: It SHOULD be the same. LOL
You should be able to if you have a DMM and a wiring diagram.
Yes. Sometimes it is also referred to as a DVOM: Digital Volt Ohm Meter
You'll check all three wires...one should be a ground, a reference voltage, and a signal. I can't remember if the MAF gets 12v from the battery or 5v from the computer.