I've installed a 86 engine, wiring harness, and computer in my '79 it's is completely together and should start but i don't have any spark and the tach doesn't work. Everything is connected and right i'm 90% sure of that, i just don't understand what i did wrong any ideas to help me with this would be great

fuses?.....broken wire during the transplant?...have somebody go over the wiring and see if you missed something....sometimes a new view on a problem is all you need to figure it out





sorry i cant help you out that much

all new fuses and i just tested all the important power wires for the ignition, and a my only source of a good second opinion is leaving for florida soon, hopefully he will have time to check it out, if not i'm screwed because those rc engineering fuel injectors go bad if they sit too long, and i don't want to have to take everything back apart to have them cleaned again

If your not getting any spark and no tach theres something wrong at the coils.Double check the wiring because the tach runs off the leading signal.

are you getting anything out of the ecu? how about 12v at the coils? are they grounded?



mike

check ur coils

any luck?

So any luck?

well i think i tracked down to that wire that powers the cpu, i'm going to go hook it up and see what happens, hopefully that's it, this car was suposed to be done about a week ago. Anyway, i'll be sure to post the results, and if anyone else ever want's to switch carb to efi







































DON'T :rant:

well i tried to run the hot wire from the battery to the cpu, but it still doesn't work, the coils have 12V but no spark, i'm going to borrow a friends 86 and test each wire that plugs into the cpu with the ignition on to which ones get 12V then if i find any that do where mine doesn't just run one! I hope this works...



asuming i undo the fuses of the ones that i already know where mine has 12V then just look for one that does, maybe i missed something?



I'll be sure to let you know what i find, also i tried another cpu (not the problem)