1) Was it working before you put in the MAF? Why did you put in the MAF? MAF won't affect whether it starts or not. The car should start (although maybe not run well) with the MAF unplugged.
2) It's unclear what you mean by "won't start" vs. "won't crank" What happens when you attempt to start the car? If the engine turns over, generally that's considered "crank, no start" if you just get a click, that's a "no crank" or "won't turn over"
2a) If crank, no start, make sure you're getting fuel and spark.
2b) If no crank, start by making sure you have a good battery
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