Hey guys, my trucks been acting up lately, throws all o2 sensor codes plus p1351, I replaced the igntion coild 2 weeks ago because it was doing the same thing but way worse. I couldn't even give 1/4 throttle with it backfiring and falling on its face. All the codes are pending and shut off for about 4-500 miles. Happens more when its extremely cold out. Haven't checked plugs but wires and cap are good. It mostly happens going uphill or I give it some to pass on the highway. Thank you in advance. Ohh and its a 97 k1500 with a 5.7