lots of problems 89 hatch with de

[1sorrydrifter]

ok so i recently bought a 89 hatch with a de swap, basically the swap seemed to be halfassed when it came to the wiring and it was throwing code 12 which is maf. when i purchased the car the ecu was bad and the wiring was hacked, i purchased another harness and it ran but was very rich and still throwing the code so after trying a friends maf I purchased an ecu, it was running great with no codes for 4 days then i started loosing power. i checked everything again and it was throwing code 12 and 34 so i purchased another maf which in turn made it immediately throw codes 11, 12, 21 and 34 which would be crankshaft position sensor, mafs, primary ignition signal and knock sensor. currently ive checked everything per the fsm, the coil and power transistor were bad so i replaced with known good ones and its still doing the same thing, now when i test everything to do with every code (meaning all sensors, wiring and ecu pins) everything tests out good, so i am completely stumped as to what it could be......any help would be greatly appreciated

[busteda$$240]

so your harness is new and unhacked except for the plug under the glovebox with you have to splice to run dohc on the sohc body and all your sensors test good...

recheck your wiring and connectors all that hullabullah not having that b**** clip on your maf will cause it to lose connection sometime and i have lost quite a few of them ...

youve got some problems but since youve undone quite a few things and new problems have arose i would start there and post your progress

[1sorrydrifter]

yea ive checked everything at least 5 times, never had a headache like this from a 240, this is my 7th one and none have stumped me like this

[busteda$$240]

did you buy oem nissan stuff or did you get it aftermarket from like a parts store or something?

[1sorrydrifter]

its all been used, also tried parts from a friends car that is running and driving fine