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Showing results for tags '280z problems electrical fuel'.
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Hey guys, just made a fresh account on the forums, figured it was about time to join in on the fun. For the past 6 months my Z has been having a shit storm of electrical and fuel problems. So where do i begin, I bought my 1977 280z about 9 months ago, i used to drive it to work a good 30 miles each way and it never gave me any issues until about 2-4 months in. on a rather warm day I was showing off my new car to a friend of mine, another datsun enthusiast, when all of a sudden i start losing power and my tachometer roughly drops. I could keep it alive for a bit if I would clutch in and work the gas but all in all it only delayed the inevitable. To get it home i cycled the key a few times, waited a few minutes, and after a handful of failures i managed to get home without any more hiccups. from that point the health of the car deteriorated very slowly over a long period of time. Now before i got this car I wasnt very mechanically inclined, I have basic skills, I know how to take peices off and put them on again, still learning. I knew i would get problems down the road and I was prepared to make the necesary repairs. I used the forums to point me in the right direction, and i know its not the right way, but i basically used hints of snippets of information to choose which replacement part i would throw into my car. I started fuel injector cleaner which seemed to work for like a week. after that i put on a fuel pump because it seemed like I wasnt getting pressure, I did not put a guage on or checked the pressure, i just put it on. I know, slap myself. (didnt learn either). I drove for a while then again the same problem would occur, which i then began to figure out may be vapor lock, very possibly still is. From there I got a oem replacement fuel regulator, which also seemed to work for a while, but ultimately failed, So as weird as it sounds, I chose to do an oil change about that time, which really did stop the issue of my car. I drove around for a few months on a leaky head gasket, I had it checked by a shop they said it was fine so long as i didnt get the sluggies in my radiator or coolant in my oil, which i wasnt. I waited for some help before I replaced the headgasket, got that done way later than it should have taken. drove drove drove and then guess what happens? it went kaput again. From that point i replaced the Afm, distributer, coil, alternator, 2 fuel injectors, and very recently i put an adjustable fuel pressure regulator on and set it down to 30-36 varying.I forgot to mention, before i replaced the afm, my tach would go ape-shit, my fuel injection relays by my foot would click to high hell, and eventually my fuel pump begain to stay on. the quickest solution i saw was to disconnect the battery. for about 2 weeks i rode around with a super-acces panel over my batery. I had my local datsun guy hook up my fuel pump on a stand alone system with a kill switch and a relay and all those goodies as a temporary fix but now my afm no longer controls my fuel pump shut off. I tried restoring the factory wires after i replaced the AFM but the same problem where the fuel pump kicks on automatically still occurs. Bare with me guys, im just trying to give any and all background of my vehicle so we can slim down the options When I had bought the car it had a sterio system put in with an amp and subs, it also has power locks, windows, and an alarm system. All of these I am suspicious of because sometimes my car will shut off if i close my door too hard. Recently the windows are intermittent, the sterio is on "PROTECT" because of a short somewhere, I want to just gut the whole system. Air conditioning unit has been deleted, heater doesnt work, horn deleted because im pretty sure it would short out and shut down the car. I apologies if this post makes you angry because of what a green horn i am, but if you have the patience to help me save my datsun..... It would be great! Let me know what im going to have to clarify because i know i will. thanks in advance ***The image in the thumbnail is of the mickey mouse wiring from the previous owner, along with the standalone fuel pump system tucked in next to the battery. Before the fuel circuit was installed the old wires that originally sat in the box (i want to say fusible links), we're just cut and leading to nothing*** (also in the image the wires that are disconnected hanging loose ( red yellow white white-red) was my attempt at restoring back to factory setting, so as of right now the fuel pump does not turn on with the kill switch or ignition )
