Need help ID'ing engine and no VIN from OBDII
We have a 2004 Baja Sport that had an engine swap done to it before we got it. We don’t have any paperwork on the replacement engine and I’m looking for help on how to identify it.
If I run an OBD scan, it reports that it is unable to find or read the VIN. We obviously have the VIN from other areas and the title, for the base car.
There are two stamps I’ve found so far on the engine. One reads “EJ25” and the other looks like a serial number. I don't see a VIN on it but I'll be doing some work on the underside in a few days and can poke around some more.
Will either of these be useful? Where else should I be looking or how else could I tell what engine this is?
Secondly, how do I program the VIN into the ECU, or do I have do replace the ECU?
There are no other engine codes nor issues that we have seen yet, except for a bad transmission solenoid that we have a part on order for.