Micahthehondatech Posted October 18, 2014 Share Posted October 18, 2014 (edited) Me and a friend recently purchased a 1982 Subaru DL hatch. Engine runs when you hook a bottle of gas to the carb. We don't have power at the fuel pump. But we have about 15 connectors that don't go anywhere under the hood. Does anybody have an idea as to what is is? Maybe some sort of voltage regulator Edited October 19, 2014 by Micahthehondatech Quote Link to comment Share on other sites More sharing options...
TomRhere Posted October 19, 2014 Share Posted October 19, 2014 Most of those connectors are for A/C relays and controls. Nothing it that area is fuel pump related. Subaru used one wiring harness for all vehicles basically, lots of unused connectors can be found. Your '82 has an internally regulated alternator. There is a Fuel Pump Control Unit (FPCU) mounted above the hood release handle. Kind of a pain to get to. If you search for FPCU on here, you should find quite a bit of info, as it comes up from time to time. Quote Link to comment Share on other sites More sharing options...
Micahthehondatech Posted October 19, 2014 Author Share Posted October 19, 2014 We followed the fuel pump wire all the way into an under hood connection. Using a test light at the fuel pump connection at the back we jumped power to the under hood connection with it unplugged, when the key is at start we get power like we should. With it plugged in though there is no power. Also the ignition coil wire is in that connection. So with it unplugged yes our pump works but we get no fire. Quote Link to comment Share on other sites More sharing options...
jonas Posted October 19, 2014 Share Posted October 19, 2014 Nice lookin' hatch btw. Quote Link to comment Share on other sites More sharing options...
TomRhere Posted October 19, 2014 Share Posted October 19, 2014 I know the connector you found. Found same one in my '82 BRAT. Previous owner had hacked into the fuel pump wiring and installed a toggle switch. I repaired that mess and proceeded to hunt down cause of pump not running. Mine is a California Model thus it has (had) an engine computer along with the FPCU. Did the same as you with test light and hot wire to trace out the wiring, and found a wire that would power the fuel pump. I made it work, but it wasn't right. And definitely wasn't the safe way to do it Quote Link to comment Share on other sites More sharing options...
nipper Posted October 19, 2014 Share Posted October 19, 2014 Have you checked the fuel pump to see it it has continuity? You may have a bad fuel pump. Also if this car has sat for any length of time, and the fuel pump is good, you may want to run a hot wire to the fuel pump, and have the line at the carb empty out to a bucekt and make sure there is no junk in the line. Quote Link to comment Share on other sites More sharing options...
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