need help FPR solenoid,o2 sensor, HELPP

[coryf1233]

Problem 1.

I put an AFPR on and with the vacuum connected it goes up to normal, maybe a little high with the FPR solenoid hooked up, when i pull the vac line off it, the reading does not drop, but when I unplug the FPR solenoid the AFPR is reading normal at like 27.5 with the vac connected and 37 without vac

Problem 2.

My logger is showing barely any isolation from the o2 sensor, when it does oscilate its from .08 to .010.Fuel trims are stuck at 138 with an o2 trim of 100 percent. Now To confirm the slow o2 I took a voltage reading at the o2 sensor side of the harness, probed and came up with a reading of .005???

I am posting this because my idle is poor, it sputters , puffs etc.

Now the ecu is seeing a lean a/f ratio because of the slow o2 which in turn the ECU is adding fuel to compensate causing a rich mixture which could be the sputtering and puffing out the exhaust.. Further more, the other day 3rd gear hit fuel cut really early like 4500, is it just dumping too much fuel to compensate for this o2 problem?

 

[1995gsx20g]

problem 1
the fps is doing what it was designed to do. block vacuum from going to the stock fpr when the ecu sends a signal.

problem 2
your idle may be affected by your front o2 sensor, bank1 sensor1.

it should oscillate around .5 volts for example .2v then to .7v so im pretty sure your o2 sensor is dead.

during WOT the ecu goes into open loop mode and does not rely on your o2 sensor to make
adjustments.

i would start with a BLT.