sr20det wont shut off (no luck on sr20det section)

[TLP_280ZX]

bought the ecu off ebay from a reputable seller. like 99.9% and rated top seller. it was 165 EMS to me. so got here in a couple days. reg mail was lik 10 bucks cheaper?

[TLP_280ZX]

soo... turns on and off now but misfires. new ecu, ignitor chip, coil packs and plugs. coil harness was kinda ghetto so thats suspect, can fuel pump also cause it not to run right? its a worn SOHC fuel pump right now ha. wally 255 on the way, with coil harness, u think this should fix it?

[sx moneypit]

Did it go back to missing on one cylinder or does it have multiple misfires?

[TLP_280ZX]

one cylinder, but different. went from #4 to #1. when i messed with harness a little, depinned and cleaned, it worked great, but went back to running like crap after a little bit.

[sx moneypit]

I think you are on the right track with the harness.The fuel pump would affect all the cylinders,but i would replace it anyway.The old one is probably tired !

[TLP_280ZX]

oh the old one is tired lol. on my KA it use to bog between 2.5 - 3k and near redline feel lean. so wally 255lph here i come!