Topic: EFI Cuts Fuel Intermittently, Anyone Seen This? Anyone Heard of This?
My 1983 Datsun 280zx straight six non-turbo has an EFI that is acting up. Idle is fine, WOT is fine, but between 2000 and 4000 rpm the ECU is cutting the fuel off in short, repetitive pulses. I'm going through "EFI diagnostic hell" now, checking AFM, TPS, wiring, etc. etc., but has anyone any idea what might cause such a thing?
I caught this on video, at no load, 2000 rpm, AFT spikes repeatedly to infinity, which means ECU is cutting off fuel?
https://photos.google.com/share/AF1QipP … VDV3RvU1B3