Sooby Doo Posted December 11, 2004 Share Posted December 11, 2004 I installed a new fuel pump and now I'm not getting any power to it. Does anyone know where the fuse is for the fuel pump control unit. I swear I had power a couple of days ago. HELP Quote Link to comment Share on other sites More sharing options...
Snowman Posted December 11, 2004 Share Posted December 11, 2004 Fuse should be in the regular fuse panel under the dash. The same one should power the fuel pump and the ignition system. Quote Link to comment Share on other sites More sharing options...
GLCraig Posted December 11, 2004 Share Posted December 11, 2004 Are you cranking the engine when you're testing? Quote Link to comment Share on other sites More sharing options...
Sooby Doo Posted December 11, 2004 Author Share Posted December 11, 2004 I have checked most of the fuses under the dash, but not all. And yes I am having someone trying to start the car while I check for power. Let me go check the other fuses. Quote Link to comment Share on other sites More sharing options...
Skip Posted December 11, 2004 Share Posted December 11, 2004 Sooby I see you are relatively new, some of us have chosen to not display the section called "Signatures" If the car you are working on is displayed there, I'm sorry. Some people also work on other than their own Soobs. But the FPCU varies on the different model Subes we talk about here. Please give the year, model, and fuel system of the car (carb, Spfi, MPFI, or turbo MPFI) when posting questions. Most fuel systems have the ground or negative side of the fuel pump under the control of the FPCU. The hot or positive side is controlled via the FPR (Fuel Pump Relay) which in turn is controlled via the ignition switch/relay. Trying to help Quote Link to comment Share on other sites More sharing options...
Sooby Doo Posted December 11, 2004 Author Share Posted December 11, 2004 Sooby I see you are relatively new,some of us have chosen to not display the section called "Signatures" If the car you are working on is displayed there, I'm sorry. Some people also work on other than their own Soobs. But the FPCU varies on the different model Subes we talk about here. Please give the year, model, and fuel system of the car (carb, Spfi, MPFI, or turbo MPFI) when posting questions. Most fuel systems have the ground or negative side of the fuel pump under the control of the FPCU. The hot or positive side is controlled via the FPR (Fuel Pump Relay) which in turn is controlled via the ignition switch/relay. Trying to help Thank you for the input, sorry for not mentioning the Year Make and Model it is an 82 GL Wagon w/ new weber carb and now new fuel pump. I believe now that the FPCU may possibly been the problem that caused the carb swap in the first place. Please refer to this post http://www.ultimatesubaru.org/forum/showthread.php?t=25539 but now I have all the new components and just want this darn thing to run. Should I by pass the FPCU and wire it into the ignition switch? Would I also need to wire in a switch for the electric choke? And do any of you know if an 82 has a FPR and where that might be? There are two relays above the FPCU but they may just be blinker and flasher switches. Haven't got that far yet. Quote Link to comment Share on other sites More sharing options...
Sooby Doo Posted December 11, 2004 Author Share Posted December 11, 2004 Well I just but a splice connector between the ignition (large black) and the blue wire with the red strip. I used the blue with red strip because that is connected to the positive on the new pump. I'm not sure if that was the correct one but the other black wire did not have a connection at the harness plug. Its working, so the black must be working as the ground. Thanks everyone. Quote Link to comment Share on other sites More sharing options...
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