u/DoingDaveThings

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.

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u/DoingDaveThings — 5 days ago

P0778: Pressure Control Solenoid "B" Electrical due to crushed transmission oil pan

So I'm working on fixing up our 2004 Baja Sport. We received this car from my wife's parents a few years ago after its original engine blew. My father-in-law hired a mobile-mechanic friend of his who put in a rebuilt engine. We had issues getting the guy to complete the job and after 8 months, we gave up and I hired another mechanic to finish putting the car back together. The engine and transmission had already been put in place at least.

That's when I took it over. On my very first drive I wasn't able to get the transmission to shift out of first gear. Then the "AT Oil Temp" light came on and started flashing. Fortunately we live less than a quarter mile away so I parked the car at our house and it sat there until I could take time to look at it.

Yesterday I started. The dipstick showed no transmission fluid. There were no signs of obvious leaks around the bell housing but the transmission oil pan was completely covered in old fluid. I raised the car and drained what was left of the fluid, 5 quarts total. I then went to remove the old drain pan and discovered that the 10mm bolts were only finger tight, most came off with just my fingers. The mechanic had reused the old gasket as well, which was in pretty bad shape. I'm guessing that was the source of the fluid leaking out.

I thought that might be the end of it, but when I looked at the old oil pan it was crushed inwards, as if the first mechanic had supported the transmission on the pan when lowering it to take out the old engine. I looked at the solenoids and sure enough, one of them had a broken connector that was dangling loose. The "2-4 duty solenoid, red connector" in my service manual.

I have ordered a set of remanufactured solenoids for now just in case an others are damaged. I had already ordered a new pan and silicone gasket, and filter, so hopefully this will be the end of my troubles once the new solenoids arrive.

u/DoingDaveThings — 9 days ago

Missing tire jack kit and access panel

[Solved: I'm a moron. Didn't realize it is behind the rear seat, driver-side panel. Found it.]

We inherited a 2004 Baja but it does not have the jack kit (all the tools) nor the access panel cover. I can find the jack kit online but I cannot find any mention nor part number for the access panel. Does anyone have that info?

Or can someone simply upload a photo of theirs so I can see what it looks like and do a reverse image search perhaps?

Thanks.

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u/DoingDaveThings — 11 days ago