i did an enging swap with a 93 -96 prelude vtec into my 1991 honda accord ran the wires from the vtec solinoid and pressure switch to the proper places on the ECU. and with the key on i am not getting any voltage through the wires comming from the ecu. plus i put a apex-i vtec controller in and it is saying the vtec is off. if there is anyone out there i would really appericiate any help i can get.

 

See if you can't locate another ECU temporarily to test it out...it could be that you didn't get the right ECU with your swap, or how did you splice into the ECU? Tripple check your connections, and double check the ECU.

- Nathan

 

Are you throwing a check engine light? You should be using the P13 ECU.

 

check your wiring really good...and make sure the ecu says p13 on it......but wiring is usually the problem.....

 

:thumbup: the ecu is the right one but i do have a check engine light it is for a knock sensor a code 23. i was told that if the knock sensor was bad that the ecu puts the car into limp home mode, and the vtec will not engage. i need to have a second opinion on this theory. and how will i know if the vtec is working.
thanks for your help so far.

 

have you checked the overhead muffler bearing?h:

 

No knock sensor no VTEC