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
93 Touring Wagon (EJ20G 5spd Swap) -- Finally back and running strong as ever!
05 Outback 2.5XT 5spd -- Now the wife can have her SUV and get in on the turbo Legacy goodness at the same time.
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
93 Touring Wagon (EJ20G 5spd Swap) -- Finally back and running strong as ever!
05 Outback 2.5XT 5spd -- Now the wife can have her SUV and get in on the turbo Legacy goodness at the same time.
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.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote: ↑Mon Jan 14, 2002 10:23 am
Wait....I'm confused now.
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.
93 Touring Wagon (EJ20G 5spd Swap) -- Finally back and running strong as ever!
05 Outback 2.5XT 5spd -- Now the wife can have her SUV and get in on the turbo Legacy goodness at the same time.
