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Showing results for tags 'fpcu'.
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In my hands-on efforts, and research done thus far @USMB (thank you! great content, but nothing that I can interpret as a sure thing with my limited knowledge) I have a guess as to a likely cause for my 86 Brat not starting. Here's what I can tell you so far: New battery, cables, ignition coil, fusible links. (had a no-spark issue for a while, but that's been fixed) When I chased down the no spark problem I had, I replaced the ignition coil. Once that was done the IGN fuse would blow at every attempted start. My neighbor found a short (photo with the red wire nut, next to the carb) Now with this wire disconnected the fuse does not blow and for a while the car started and ran fine for a few weeks. But eventually it would not start (turns over, but would not run) So now I've determined that the car is not getting fuel at the carburetor, and there is no sound of the fuel pump initial kicking on when I turned on the ignition, (which I could always hear before). In checking the voltage at the fuel pump when turning the key, there is nothing. Also, checking fuses, none are blown. Direct wiring of the fuel pump to the battery and it kicks right on. The two big questions: In my install of the new ignition coil (and the disconnect of the wire by the carb) if I have any wiring incorrect, could that be a cause of voltage not getting to the Fuel pump? And, is there a way to take a meter to the FPCU off of the car and determine whether it's bad? The photo gallery section has the photos as well, with brief descriptions of what is there and what I'm trying to determine. My apologies for the long-windedness. I'm hoping that there are some good explanations to this, as my lack of car knowledge has most likely caused some of my problems. Thanks in advance!
First time posting here, been lurking for awhile. I recently purchased a 1986 Subaru GL station wagon Carbureted EA82 5spd 4wd 218k. The car is a turd and has more rust and random colored body panels than numbers in it's VIN. But it was only $175! Car was running/driving daily and then I went to start it one morning like normal and nothing... -Things I've checked so far: Plugs/cap/rotor Coil Fuel pump/fuel filter Relays/condition of wires Fuses Vacuum lines -Things I've found out: No 12v to fuel pump at all but pump works fine when wired to 12v No spark at the plugs at all No 12v to either coil leads + or - No voltage coming out of coil main lead going to dist. Checked the screw on the dist. Rotor. Replaced relays and nothing changed Bench tested the coil to find 1ohm on primary winding and 9000 on secondary. Even replaced the " fuel pump control unit" aka FPCU or Revolution sensor. It's the small black box located in the drivers foot well near the hood latch area. I've come up with nothing after hrs of scouring through this forum on this issue except a few dead threads on the FPCU. Questions : Could the control/ignition module inside the dist. Be bad ? Although would this cause no power to fuel pump? I'm familar with subarus pretty well mostly ej engines but this ea82 should be simple enough is there something I'm missing that's obvious ? Any opinions or answers is greatly appreciated as I've been at it for 2 days and no luck at all. THANKS!!