[idlafie]

Berto,

Check your ground wires - the ones that are on the back portion of your engine block on the driver side right above the Oxygen sensor. Make sure you have a good ground connection. If not, cut the old ground connector off & solder the ground wires together and connect it to a new ground connector and bolt it back to the engine block.

Also, with the engine running, grab a hold of the wiring harness by the back firewall area around where the harness turns & follows the fuel rail and move the entire harness around by hand. If your engine starts to bog & runs like ass, then you probably have a bad pin in one of the wiring harness connectors.

I had this same issue years ago with my 95 S14, except when mine started acting up I was 400 miles away from home. Fortunately I was next to Dublin Nissan when the motor died on me the second time. The first time it died, I was next to Santa Rosa Nissan - they couldn't figure out what the problem was & so they sent me on my merry way. 75 miles later & the second time the motor died, I pulled into Dublin Nissan & showed them my Santa Rosa Nissan report. Fortunately for me the Dublin Nissan guys figured out that it was a bad harness pin on the main wiring harness. I had to spend the night in Dublin while the Dublin Nissan guys tore apart the wiring harness to repin the one bad wire.

Anyhow, hope this helps....

ID