Hondata

Along with the bad battery ground, the VSS wiring was backwards on my harness. I plugged that sensor up and that had the same effect as the bad battery ground. I know that the battery ground was definitely bad and I know that the VSS wiring was definitely backwards. What a relief it was to fix that ...

Fixed it , found the problem about an hour ago. Earlier today while still doing tests on random electrical stuff I flipped the ignition switch to the START position, the engine tried to turn over then everything died. So for a few hours I wiggled wires, untaped the harnesses, you name it. Finally I ...

Try the ECU on a known working car first. IF it works correctly then you know it is a problem with your wiring. What have you changed in the car since it last worked?

I plugged my ECU into my friends car. It powered up and the fuel pump primed. We did not attempt to start his car with my ECU ...

If the ECU is getting warm then do not power it up before you fix the problem, otherwise you will damage it.

You will need to check all the wiring is the same as our engine swap diagram. http://www.hondata.com/techk20wiring.html Start by looking at the main relay then the fuel pump relay then the ...

- what vehicle you have - 1991 Civic Dx
- serial number of your K-Pro -
- ECU part number (starts with 37820) and serial number (the number under the part number)
- KManager version (not 'the latest')
- the calibration (as an attachment) - base tune just to start the engine
- a datalog of a problem ...