bigger problems with my tbi 318, mita smoked the computer.

well i did it now, as i posted before my fuel pump was not running.. checked the relay and it seemed to be good. tried to jump from the power wire into the relay across to the wire that should go to the pump and nothing happened. then i tried to jump from the power sorce to all three wires that go out the relay at the same time.. nothing happened, and now my power wire into the relay has no power, i traced the wire. it runs into the computer, i have no power from that one wire for the fuel pump comming outa the computer. everything else apears to still work. it aint shooting any new codes.

what i was wondering is if i mite have smoked the computer now.. if everything else still works why cant i just run a new power wire to the fuel pump and into a keyed circut that way when i turn the key on the pump kicks on like before.. or does it need to be ran thru the whole system.

am at my end, if i cant get it to work i am gonna swap to a carb or maybe something more drastic..

The power wire from the computer to kick on the pump will only have power when you first turn ignition on and when engine is running.
Do you have a meter?

yes, i testing it with a test light while my bro turns they key.. but no power is coming from it.. could it be the auto shut down relay.

Yes it could be the asd relay,it should kick when turning on the ignition,check for power in the red wire,if no power,open wire,if power then relay,again try a jumper only to the opposite wire(should be black).

myrelay for the fuel pump is not getting any power at it at all.. i'll check the asd relay........ thanks

ok, i got power at the red wire into the relay now, but no power at the blue wire coming outa the computer.. if i jump power from the battery to that blue wire it starts but overheats the power wire within a few secounds.. so i asume the blue wire from the compter should have power but it should be steped down in volts..

if i ainmt getting power from that blue wire coming outa the computer and going to the fuel pump relay, is my computer bad??

It will only have power when you first turn the key on,cranking or running.

ya, i know that.. i gotr no power at all there.

like i siad it has no power at that wire at all, i traced it all the way to the computer but it isnt burnt. do ya think i smoked something in the computer, or maybe there is another wire, on that should suplie power into the computer before it is deverted over to that relay... if so that could be bad.

I think you will have to strip off your wiring covering and check all fusable links.

ya i should mentioned i checked them, they all were good eccept one, wich i removed. that was most likly my origional problem, but when i was jumping wire across the relay to see why if the fuel pump would kick on, i decided i should jump from the power wire, at that time the wire coming from the computer was the only one with power, to the other three wires all at once.. since then my computer wire has had no power. if i run power from the battery to the wire that comes outa the computer it starts and runs but within a few minutes the wires coming out of the relay overheat and i burned one off as a result, i fixed that now but still cant figure why i have no power coming outa the computer...

You might have fried it.

thats what i thought, but it still runs if i junp to tat wire.. could i have just fried that one part inside the computer.. my buddy has a good computer from an 89 w100, i'm gonna go get it tomarrow and try that i think.

I hope that will work.
I do not know if that computer will be compatible.

ya i just think it is odd that everything else still works and it doesnt shoot codes.. but i have power at that wire, i didnt think you could smoke just one thing inside the computer, i figured everything would go if one think went??

You never can be too sure.
you can check the dark blue/yellow wire at the diagnostic connector for power(6 pin connector near the bulkhead).

checked it, no power.. geuss i'll change it out and see if that fixes it. if not i'll close the hood and forget i ever bought the dam thing...

I know all too well how you feel.
Sometimes it does help to take a break and walk away for a while(I know easier said than done too).

i would, but i need it to run..