StreetSleeper34
15+ Year Contributor
- 157
- 0
- Mar 29, 2004
-
Dubuque,
Iowa
After searching for several hours of what to look for on my n/t logs, I finally have decided to just open it up to anyone who can answer my questions. I couldn't find anything about n/t tuning, and some of the concerns that I am having with my logs, so here it is:
First concern...at idle, o2 seems to be working fine. Volts and trim bounce around the the lo fuel trim is right around 100%. But as soon as I step on the throttle, the o2 trim pegs at 167% and the volts hang around .02-.06. If I maintain normal driving conditions, especially cruising on the highway, the trim freezes at 100% and the volts stay at .02, not moving at all until I lay off the gas. Is this normal, or is it possibly a sign that the heater in my sensor is going bad...which is usually indicated at idle when everything stops cycling.
Currently my hi fuel trims are pegged at 139% and my mid are starting to drop, but are 136% right now. I am slowly richening up my MAFT, but this doesn't seem to be helping a whole lot, or at least very quickly...like for several days the mids and highs don't change. Here is one of my latest logs if this can help any diagnosis.
RPM: 6906
TIMING: 25
O2 V: .86-high was .88 in second (seems low)
O2 TRIM: 100
AIRFLOW: 1172
INJ. PW: 12.82-high was 14.38
INJ. D/C: 73.78-high was 76.75 (both seem very high)
ISC: 93
AIR VOLUME: 3
TPS: 100%
Base Timing: 7
If someone could help with this, I would greatly appreciate it, and does any other n/t drivers have any logs to throw up so that I could compare mine to. I only have turbo guys to try to work off of. I have no real base to start at.
First concern...at idle, o2 seems to be working fine. Volts and trim bounce around the the lo fuel trim is right around 100%. But as soon as I step on the throttle, the o2 trim pegs at 167% and the volts hang around .02-.06. If I maintain normal driving conditions, especially cruising on the highway, the trim freezes at 100% and the volts stay at .02, not moving at all until I lay off the gas. Is this normal, or is it possibly a sign that the heater in my sensor is going bad...which is usually indicated at idle when everything stops cycling.
Currently my hi fuel trims are pegged at 139% and my mid are starting to drop, but are 136% right now. I am slowly richening up my MAFT, but this doesn't seem to be helping a whole lot, or at least very quickly...like for several days the mids and highs don't change. Here is one of my latest logs if this can help any diagnosis.RPM: 6906
TIMING: 25
O2 V: .86-high was .88 in second (seems low)
O2 TRIM: 100
AIRFLOW: 1172
INJ. PW: 12.82-high was 14.38
INJ. D/C: 73.78-high was 76.75 (both seem very high)
ISC: 93
AIR VOLUME: 3
TPS: 100%
Base Timing: 7
If someone could help with this, I would greatly appreciate it, and does any other n/t drivers have any logs to throw up so that I could compare mine to. I only have turbo guys to try to work off of. I have no real base to start at.
Thank for the help! 
