Scotty. I have a 2005 jeep liberty sport. Just this morning, my oil pressure light started coming on while the engine idles. As soon as I give it some gas, it turns off. Sometimes it comes on right when the engine starts idling, and other times it will idle for a few seconds. Could it be the oil pump or the oil pressure sending unit?

Could be those and a lot of other things - get a thicker oil in it right away and get it in for an oil pressure check with a gauge hooked up - that will tell you if it an internal issue or electrical issue for sure - you need this done asap

OK. I'll do that. I study diesel mechanics at my local college, and we have a pressure testing kit in the shop. I'll test it tomorrow