Hi. I have been noticing for a while that my insignia seems to sometimes hold back, almost like a misfire in low gears/ revs - but it does really pull its weight at higher revs in the gear range. I have acquired a scan tool and took some readings, i am still researching what they mean but here are a capture:
DTC_CNT 0
FUELSYSA CL
FUELSYSB --
LOAD_PCT 24.3 %
ECT 159.80 °F
SHRTFT1 1.6 %
LONGFT1 -7.8 %
MAP 8.27 inHg
RPM 790.00 rpm
VSS 0.00 mph
SPARKADV 8.0 °
IAT 98.60 °F
MAF 0.01 lb/s
TP 18.0 %
O2SLOC B1S12--B2S----
O2S11 0.160 V
SHRTFT11 -2.3 %
O2S12 1.275 V
SHRTFT12 99.2 %
OBDSUP EOBD
RUNTM 337 sec
MIL_DIST 0.00 miles
CLR_DIST 26287.73 miles
BARO 29.53 inHg
CATEMP11 953.60 °F
VPWR 14.366 V
LOAD_ABS 18.4 %
LAMBDA 0.999
P_R 4.7 %
AAT 75.20 °F
TP_B 17.3 %
APP_D 20.0 %
APP_E 10.2 %
TAC_PCT 6.7 %
EVAP_PCT 11.4 %
FLI 71.8 %
My main concern at the moment is the negative long term fuel trim, as i know this can cause performance issues and not be good for the engine. But i don't really understand the rest of the data. Is there anything in this data that could indicate something that is contributing the negative fuel trim? Does the data look okay?
Just to mention, the car has 30,000 miles on the clock so pretty low really.
Thank you
DTC_CNT 0
FUELSYSA CL
FUELSYSB --
LOAD_PCT 24.3 %
ECT 159.80 °F
SHRTFT1 1.6 %
LONGFT1 -7.8 %
MAP 8.27 inHg
RPM 790.00 rpm
VSS 0.00 mph
SPARKADV 8.0 °
IAT 98.60 °F
MAF 0.01 lb/s
TP 18.0 %
O2SLOC B1S12--B2S----
O2S11 0.160 V
SHRTFT11 -2.3 %
O2S12 1.275 V
SHRTFT12 99.2 %
OBDSUP EOBD
RUNTM 337 sec
MIL_DIST 0.00 miles
CLR_DIST 26287.73 miles
BARO 29.53 inHg
CATEMP11 953.60 °F
VPWR 14.366 V
LOAD_ABS 18.4 %
LAMBDA 0.999
P_R 4.7 %
AAT 75.20 °F
TP_B 17.3 %
APP_D 20.0 %
APP_E 10.2 %
TAC_PCT 6.7 %
EVAP_PCT 11.4 %
FLI 71.8 %
My main concern at the moment is the negative long term fuel trim, as i know this can cause performance issues and not be good for the engine. But i don't really understand the rest of the data. Is there anything in this data that could indicate something that is contributing the negative fuel trim? Does the data look okay?
Just to mention, the car has 30,000 miles on the clock so pretty low really.
Thank you