If you can get a P code from the autozone or parts place that would help. It could be anything. Like your running on borrowed time with a 2001. Could be various intake or sensors. Here's a easy one that you can do with no problem, pull the plastic cover over the top of the engine, look at your oil sep hoses on the back side of the engine. I just replaced mine but I also received a SES light prior fixing it.

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2001 4.4i Alpine White-Bone Stock
2001 Discovery II SE7 Black (A money pit)
1996 FJZ-80 Black (with some goodies)
1969 Firebird (work in progress)