Oil light(red can with drop) comes on when I press the brake. I have replaced the pressure sensor 2 times. Changed the oil, filters new oil(synthetic blend), change back to covental oil plus did oil pressure check with manual gauge(flushed motor this time). A friend and mechanic told me to go with 20w50 so I did. Said oil pump was weak, that when I speed motor up the oil pump speeds up too. It has thrown multiple different codes. I change spark plugs it help some put new MAP helped a little. Now I'm using 89 instead of 87. I've researched. Results could be battery or pcm or vac leak. I've replaced crankcase breathers and pcv line. I'm ready to torch it but I love my jeep. Please old wise hands help me out. It's my first jeep( just empty every pocket ) first 4x4 and first vehicle with AC. It has a 3 inch lift before I bought it. Only had it almost 3 months