always reading 5v

[tero404]

hi nico, i am having trouble with my mass airflow sensor readingit seems like the mafs is always reading 5volts (v-ref) this seems to be causing the computer to be dumping a lot of fuel in the cylinders. when i check the spark plugs they are soaked with fuel. the reason i know its reading 5 volts is because i had a safc wired into the system, and then going through sensor check i can see that it is reading 5 volts. so i got a new uncut wiring harness with a new ignition coil and plugged it up to see if it would change anything but to no avail. i tried borrowing a different computer but still the same reading. i tried borrowing a different mafs but still the same. i learned through the fsm that the mafs goes through the eccs relay so i swapped the egi pump relay and the egi relay around but still the same thing. running out of options and hope. can anyone help?