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Im with John on this.
02 doesnt matter its a fucking joke on older nissans. 02 feedback only has a big effect on PFCs in my experience.
People on here fail.
This sounds like it could also be a simple ignition ground problem, ie the ignition ground on the back of the coil pack harness to the head.
This needs to be bolted to the back of the head and the firewall (to back of head with 12mm nissan bolt) stubby.
1. Maf
2. Injector O-rings
3. check fuel pressure
4. boost leak
5. ignition ground
6. coilpack failure
7. ecu area wiring all fucked to shit
there one of those is your answer
if not Ill give you a free cold stone icecream when I see you
I will never see you hopefully
so you will never get it
good luck and god's speed
last time this happened to me I sold my car and bought a huffy *jk(but its funnY
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OK....
I checked the voltage to the cp and all of them checked out w/an 11.5x +, MAF checked out w/the same votage and I checked the ground to the firewall (I used it to test the voltage from the coilpacks) and it was good. Boost leak has already been checked. ECU wiring is fine. Where is the ignition ground?
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1. you should check that ecu code that you never checked.
2. unplug your o2 sensor, see if it still behaves the same. i had a similar problem once and it turned out to be a bad o2 sensor.
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How do I check the ecu code when the CEL doesn't come on anymore? I unplugged the O2 just to see if that was the problem and it had no effect on it.