legacycentral bbs

So, im drivig to lunch today and do a spirited pull in 1st gear, and it dies. After shitting bricks for a moment, I see that the CEL doesnt come on with the ignition and unsurprisingly, one of my green SBFs in the main fusebox was toasted.

This happened during my swap, but I shrugged that off as a wiring issue. Well, now I have no wiring issues. Ive been over all my grounds, im running the GD COP conversion using stock wires and connectors (but outside the main harness). And I have my AWIC pump running off the A/C circuit, which has been fine for 2 years now (long before my swap or any electrical issues). Im completely clueless as to why this would happen

May have found my answer. After replacing the SBF and driving 50ft, it started throwing crazy knock lights and sputtering and had almost no power. Almost thought my new fuel pump was taking a shit, until black smoke started billowing from the hood scoop. After taking a moment to shit even more bricks, I checked it and found that my O2 sensor harness was set on fire from resting on my down pipe (not just melted, it was on fire and the flame was climbing towards my engine harness!). Must have forgot to zip-tie it back in place after a changed my clutch. Oh well, pulled that out and she runs fine again (is there no cEL for a bad/missing O2 sensor?)

So, I'm betting the wires grounding out on my down pipe caused the SBF to blow. Scratch what I said about not having any wiring issues

Holy shit bricks batman! Glad you figured the cause! Yeah as far as a CEL for O2 sensor issues, I've never seen them without a sensor installed. A marginally bad sensor didn't throw one for me either.

Which SBF blew? They should be numbered on the fuse box lid.

It was sbf 2.

SBF 2 feeds MB-3 which feeds the ignition relay, fuel pump relay, and injectors. MB-3 doesn't directly tie into the O2 sensor wiring, but hopefully fixing the O2 sensor is the issue.

Well when you say it isn't directly tied into it, that sounds like it still goes through there somehow. I will crack open my wiring diagrams tonight (@#$%) and see if I can find anything else I should check on. Its possible the O2 sensor was a coincidence, but that's an awfully well timed coincidence.

So....U gonna build a house....w/all those 'bricks'?
Glad you figured it out.

Td

You likely have rubbed or melted through one of the big fat wires and shorted out to something on grounded component.