Go back to previous topic
Forum nameTurbo/Nitrous Tech
Topic subjectrevisiting fuel pressure issue & what happens if O2 sensor is going or goes tits up?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=49064
49064, revisiting fuel pressure issue & what happens if O2 sensor is going or goes tits up?
Posted by tim97rs, May-18-03 02:10 PM
im still having "issues" with my FP/SFMU/AF #'s.

I turned down my static pressure from 34psi to 30psi, which now makes my idle run @ 18psi. I still hit 1.03-1.05v AF when boosting 6psi. Car seems and feels to run fine, no engine codes for running to rich. Only "side effect" is it has taken me about 118 miles to run thru a half tank of gas, which dont seem normal!!!!
SO im running rich, burning buku gas, and cant find any part numbers on accell injectors to referance size. (i still think i got bigger injectors than 310's)
SEGWAY into AF question - whats a sign that O2 sensor is going/gone bad?

thanks

PS gonna order datalogger monday!!!!!!!!!
49114, RE: revisiting fuel pressure issue & what happens if O2 sensor is going or goes tits up?
Posted by tim97rs, May-19-03 06:07 AM
anybody?
49115, RE: revisiting fuel pressure issue & what happens if O2 sensor is going or goes tits up?
Posted by BoostedGS, May-19-03 06:32 AM
Poor gas mileage is definitely a sign of a bad O2 sensor. What is your fuel pressure at under boost?
49117, RE: revisiting fuel pressure issue & what happens if O2 sensor is going or goes tits up?
Posted by whodatt1, May-19-03 07:08 AM
I'm having almost the same prob. I know i'm runing rich, but my a/f gauge reads lean. not sure if its the gauge or the 02 sensor. anyone know what are the tell tell signals of a bad o2 sensor. Also can we swap the rear for the front?