stuck on this one, check engine light and surging
ok i,ve had this problem for at least a year. check engine light, the code says running lean on banks one and two. ive had a guy check the oxygen sensors with some fancy snap on computer and he said all the oxygen sensors are working correctly, and i had all new vacume lines put on when i rebuilt the engine. cleaned the maf if that helps for anything. sooo any ideas?
newest problem when i get on it hard and it shifts to the next gear the truck surges hard till i let off the gas, pretty much like its not firing right. this just started so i have no idea if it has thrown a code. i know that need to be checked just thought i would throw it out there and see if anyones had a similar problem.
all help is appriciated
98 4.0 auto 2wheel drive.
5 inches of lift
33 12.50 BFG Mud Terrains on craiger 15x10 soft 8s