after my dyno mishap with no boost, and fixing the problem i found my 02 senor to be dead and killing my gas milage even more. i found this out when i was tryin to use a datalogger to tune my car. so i picked up a new sensor and now my car runs like shit. where today it was drivin awesome in and out of boost.
so what i found out tonight is i have no clue on what to do with this datalogger i borrowed and i need to read up on it. if someone could point me in the right direction that was be a huge help.
next all my a/f numbers conflict with egts and how the cars acting.
just lettin the car idle it dies after about a min. my tt is readin 10.00 my blinky guage is rich but my egts are about 9 and i have fuel pulled out with my safc. i tried to adjust my trim thur the safc and it didn't help my idle fp is between 18-20 which should be fine from what i've been readin here.
when i'm driving the car the transition from vac to boost is rough and if i'm just tryin to stay in vac the car just slows down. in boost i'm readin rich but my egts are climbing and i'm only doin testin this from about 3grand to 4 for right now. also after i tested it my a/f on the tt quit readin so i dont know if its out of the range for readin the senor or if i killed the new 02 senor already when i check on the datalogger i'm still gettin a reading unlike the other day when my senors was dead and it just stayed the same no matter what.
also when i'm startin out in first or reverse the car just doesn'tw ant to do anything unless i'm startin in boost so have to get the turbo to spool somewhat so i end up reving the motor to like 3grand just to pull out.
basically i have too much info and i dont know what to do with it, b/c it all just seems conflict.
hmm HELP!!!

Have you reset the ECU since changing the sensor?

ehhhh NO that might have helped out a lil huh... i was too excited to finally have the correct sensor that i just popped it in and didnt' even think about that.. F%$@* would it really be killin me to have forgot about doin that?

Originally posted by 98starGS
ehhhh NO that might have helped out a lil huh... i was too excited to finally have the correct sensor that i just popped it in and didnt' even think about that.. F%$@* would it really be killin me to have forgot about doin that?

Doesn't hurt to try. Is the car throwing any CEL's now that you've changed these things?

i'm still bank 1 lean.

ok i reset the ecu and it clear my codes. it still wants to die at idle and runs like shit when i'm not in boost. i just think my fuel is all over the place and thats whats killin me. is there any way to lean out my idle besides dropping fp? my disk and ring combo wouldn't effect that, correct or am i wrong?? my pressure under boost is fine. so what else could i do at this point before i hit the dyno again?

What size injectors?
Whats your Static and idle fp?
What reg?


Nick
97RS

turbo8u> shut your SUCK
ZAO684: NIPPLE warning...maybe>?
turbo8u> yea i was a window licker on the short bus in junior high

30lb injectors, my idle fp is 18-20, and i'm using a sfmu. as far as static i'd have to go pull the vac line after work and see where i'm at.

Up your idle fuel pressure to around 22-25psi and it should help out a little bit. 18 is a LITTLE low, but it should still idle OK.

anthony, i can't believe you are having all these problems. damn. like i said you can have the datalogger pretty much as long as you need it. my car won't be ready probably for another 2 weeks or so.

Did you buy the oem o2 sensor or a universal one for our cars? I bought a universal one and had the wires connected all wrong and it died and when car was turned on idled like shit and felt like it was gonna turno off.

i got oem replacement i want that readin to be as percise as possible since i'm using that for tuning.
i dont see how raising my fp is goin to help me out since i'm runing almost dead rich at idle. my cell hasn't come back on yet and i've drivin the car to work out for lunch and home so i think if something else was up it would have triggered by now. so i'm running cell free and like shit. perfect :wallbash

I had all the same problem with my car. wanting to die and runnig lean bank 1 ect ect... I bought a oem o2 sensor like you did and reset the ecu and my ses light went off and my car runs fine. If your running real rich you might want to lean it out some or youll end up killing your new o2 sensor and have it wanting to die out too.

how am i goin to lean it out? if i pull 50% fuel with my safc its still not cutting so says my tt and my blinky gauge. i dont care about burning it out really i got a great price on it and i'll get it again might pull a warranty but regardless of that i just want it to drive right. throw me some suggestions or if you have a safc what ur trims are like? i have my fuel set up posted above so if ur setup is close to mine anything would help me out.