It does sound like a computer related issue. You need to have the OBD2 port checked to see if it can be repaired. Hopefully. That will give you direction to the problem. Without that, it becomes a guessing game.
Just for the heck of it, check fuel pump pressure to make sure it is within spec and check to make sure the catalytic converter isn't plugged. Either could cause the vehicle to be sluggish.
Thursday, July 4th, 2013 AT 7:36 PM