I have a 1989 Honda Civic Hatchback with a D16Y8 Block and what I believe is a D15 Vtec JDM Head. I have a Code 4 for Crank Angle Sensor. The car is stuck in limp mode and won't go pass 3k RPMS. I have checked all the wiring and OHM them out, it all checks out. I am stumped, any advice? Is there a way to bypass the limp mode?