I wanna say it's a O2 sensor but you said you replaced it. As for the 4K drop to 1K that sounds like a govenor, but I didnt think it would be at 85 MPH. Do you have a OBDII scanner or are those 95's OBDI's?

It was nice meeting you by the way.


Sam 1998 SVT Contour- SOLD 2002 Mustang GT - 406 RWHP/391 RWTQ 12.1 @ 115 MPH