[steve shadows]

Originally Posted by jt1583

A few days ago I had some sputters and hiccups on the highway, thought nothing of it, although it was a new issue. Then I went over a transition on highway and it seemed to coincide with that so I thought it was physical (ground or sensor wire maybe).

When I started it today, the relays at the driver footpanel were clicking very fast, and when the ones down by the ECU started clicked the car died. I don't think it's the relays themselves, because even if I swap them around, they still click, very fast. It seems either ECU related or power supply related. What are the ground wires to check?

I pulled the codes, getting

14 - speed sensor
34 - knock sensor
41 - intake air temp
82 - crank position
105 - EGR

all these are correct except crank position, which I've read is monitoring only. The other sensors actually are missing for the most part.

It's a 95 S14 with a 3C ECU and pretty stock KA24DE. Fuel pump seems to be priming and running okay. Everything under the hood still looks tidy although this could be a grounding issue. No multimeter available to check battery/alt status, I'll work on that.

Any advice very welcome, thanks in advance.

Definitely sounds like an electrical short on one of the major input wires into the ECU or behind that kick panel. See this time and time again on 240sxs.