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3800sc random multi cylinder misfire (Page 2/4) |
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Spoon
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FEB 05, 08:57 PM
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Madess, a free bump for you.
Hopefully I'll be posting some scanner readings tomorrow.
Spoon
------------------ "Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut
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Spoon
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FEB 06, 11:42 PM
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Madess, Here is a scan I took today for you and anyone else to check out. Looks like the temp never made it to 180 dg. I better check the stat. And the engine lit up right on schedule 3k.
Record Data
FRAME: 0 TM: 0.0
ABSLT TPS(%) 0.4 CALC LOAD(%) 1.6 COOLANT(°F) 153 ENG SPEED(RPM) 821 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.0 LT FTRM1(%) 14.8 MAF(LB/M) 0.62 MAP("HG) 8.0 MIL STATUS Off O2S11(V) 0.090 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -0.8 ST FTRM1(%) -0.8 VEH SPEED(MPH) 0
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FRAME: 1 TM: 1.7
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 153 ENG SPEED(RPM) 840 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.0 LT FTRM1(%) 14.8 MAF(LB/M) 0.62 MAP("HG) 8.0 MIL STATUS Off O2S11(V) 0.605 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 2 TM: 3.3
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 153 ENG SPEED(RPM) 838 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.5 LT FTRM1(%) 14.8 MAF(LB/M) 0.63 MAP("HG) 7.7 MIL STATUS Off O2S11(V) 0.715 O2S12(V) 0.445 OBD2 STAT CA ST FTRM11(%) -0.8 ST FTRM1(%) -0.8 VEH SPEED(MPH) 0
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FRAME: 3 TM: 5.0
ABSLT TPS(%) 0.8 CALC LOAD(%) 2.0 COOLANT(°F) 153 ENG SPEED(RPM) 943 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 27.0 LT FTRM1(%) 10.2 MAF(LB/M) 1.32 MAP("HG) 8.9 MIL STATUS Off O2S11(V) 0.035 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 4 TM: 6.6
ABSLT TPS(%) 5.1 CALC LOAD(%) 5.5 COOLANT(°F) 153 ENG SPEED(RPM) 2143 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 30.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.05 MAP("HG) 7.4 MIL STATUS Off O2S11(V) 0.290 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 5 TM: 8.2
ABSLT TPS(%) 6.3 CALC LOAD(%) 6.7 COOLANT(°F) 153 ENG SPEED(RPM) 2585 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.0 LT FTRM1(%) -1.6 MAF(LB/M) 2.39 MAP("HG) 6.8 MIL STATUS Off O2S11(V) 0.640 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 6 TM: 9.9
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 154 ENG SPEED(RPM) 2830 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.54 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.570 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 7 TM: 11.6
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 154 ENG SPEED(RPM) 2899 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.0 LT FTRM1(%) -1.6 MAF(LB/M) 2.51 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.835 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 8 TM: 13.2
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 154 ENG SPEED(RPM) 2911 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.63 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.820 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 9 TM: 14.9
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 154 ENG SPEED(RPM) 2957 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.55 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.495 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 10 TM: 16.5
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 154 ENG SPEED(RPM) 2984 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.0 LT FTRM1(%) -1.6 MAF(LB/M) 2.56 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.450 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 11 TM: 18.1
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 154 ENG SPEED(RPM) 2964 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.60 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.260 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 12 TM: 19.8
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.8 COOLANT(°F) 156 ENG SPEED(RPM) 3039 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.57 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.845 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 13 TM: 21.4
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.8 COOLANT(°F) 156 ENG SPEED(RPM) 3046 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.57 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.125 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 14 TM: 23.1
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 156 ENG SPEED(RPM) 3053 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.59 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.250 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 15 TM: 24.7
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 156 ENG SPEED(RPM) 3060 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.64 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.810 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) -2.3 VEH SPEED(MPH) 0
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FRAME: 16 TM: 26.4
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.8 COOLANT(°F) 158 ENG SPEED(RPM) 3053 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.63 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.165 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) -2.3 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 17 TM: 28.0
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 158 ENG SPEED(RPM) 3082 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.65 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.820 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 18 TM: 29.7
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.8 COOLANT(°F) 158 ENG SPEED(RPM) 3082 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.63 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.095 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 19 TM: 31.4
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.8 COOLANT(°F) 160 ENG SPEED(RPM) 3104 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.60 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.855 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 20 TM: 33.0
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 160 ENG SPEED(RPM) 3104 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.65 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.720 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 21 TM: 34.7
ABSLT TPS(%) 7.5 CALC LOAD(%) 7.8 COOLANT(°F) 160 ENG SPEED(RPM) 3082 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.59 MAP("HG) 6.5 MIL STATUS Off O2S11(V) 0.135 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 22 TM: 36.4
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 162 ENG SPEED(RPM) 3096 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.54 MAP("HG) 6.5 MIL STATUS On O2S11(V) 0.850 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 23 TM: 38.0
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 162 ENG SPEED(RPM) 3018 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.51 MAP("HG) 6.5 MIL STATUS On O2S11(V) 0.675 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 24 TM: 39.7
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 162 ENG SPEED(RPM) 3011 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -1.6 MAF(LB/M) 2.46 MAP("HG) 6.5 MIL STATUS On O2S11(V) 0.120 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 25 TM: 41.3
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 162 ENG SPEED(RPM) 2998 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) -0.8 MAF(LB/M) 2.50 MAP("HG) 6.5 MIL STATUS On O2S11(V) 0.130 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 4.7 ST FTRM1(%) 4.7 VEH SPEED(MPH) 0
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FRAME: 26 TM: 43.0
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.5 COOLANT(°F) 163 ENG SPEED(RPM) 3032 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.5 LT FTRM1(%) 0.0 MAF(LB/M) 2.54 MAP("HG) 6.5 MIL STATUS On O2S11(V) 0.270 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 0.8 ST FTRM1(%) 0.8 VEH SPEED(MPH) 0
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FRAME: 27 TM: 44.7
ABSLT TPS(%) 6.7 CALC LOAD(%) 7.1 COOLANT(°F) 163 ENG SPEED(RPM) 3011 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 32.0 LT FTRM1(%) 0.8 MAF(LB/M) 2.50 MAP("HG) 6.5 MIL STATUS On O2S11(V) 0.270 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 4.7 ST FTRM1(%) 4.7 VEH SPEED(MPH) 0
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FRAME: 28 TM: 46.3
ABSLT TPS(%) 6.3 CALC LOAD(%) 5.9 COOLANT(°F) 163 ENG SPEED(RPM) 2730 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 22.0 LT FTRM1(%) 6.3 MAF(LB/M) 0.89 MAP("HG) 5.0 MIL STATUS On O2S11(V) 0.030 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 10.9 ST FTRM1(%) 10.9 VEH SPEED(MPH) 0
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FRAME: 29 TM: 48.0
ABSLT TPS(%) 0.4 CALC LOAD(%) 2.0 COOLANT(°F) 165 ENG SPEED(RPM) 1167 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 20.5 LT FTRM1(%) 10.2 MAF(LB/M) 0.67 MAP("HG) 6.8 MIL STATUS On O2S11(V) 0.885 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 4.7 ST FTRM1(%) 4.7 VEH SPEED(MPH) 0
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FRAME: 30 TM: 49.6
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 165 ENG SPEED(RPM) 869 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 52 IGN ADV(°) 20.0 LT FTRM1(%) 15.6 MAF(LB/M) 0.57 MAP("HG) 7.7 MIL STATUS On O2S11(V) 0.845 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 1.6 ST FTRM1(%) 1.6 VEH SPEED(MPH) 0
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FRAME: 31 TM: 51.3
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 165 ENG SPEED(RPM) 778 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.5 LT FTRM1(%) 15.6 MAF(LB/M) 0.61 MAP("HG) 8.3 MIL STATUS On O2S11(V) 0.055 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 1.6 ST FTRM1(%) 1.6 VEH SPEED(MPH) 0
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FRAME: 32 TM: 52.9
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 167 ENG SPEED(RPM) 882 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.0 LT FTRM1(%) 16.4 MAF(LB/M) 0.59 MAP("HG) 7.7 MIL STATUS On O2S11(V) 0.060 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 2.3 ST FTRM1(%) 2.3 VEH SPEED(MPH) 0
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FRAME: 33 TM: 54.6
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 167 ENG SPEED(RPM) 858 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.0 LT FTRM1(%) 16.4 MAF(LB/M) 0.59 MAP("HG) 7.7 MIL STATUS On O2S11(V) 0.195 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 6.3 ST FTRM1(%) 6.3 VEH SPEED(MPH) 0
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FRAME: 34 TM: 56.2
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 167 ENG SPEED(RPM) 830 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.0 LT FTRM1(%) 16.4 MAF(LB/M) 0.58 MAP("HG) 7.7 MIL STATUS On O2S11(V) 0.635 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 6.3 ST FTRM1(%) 6.3 VEH SPEED(MPH) 0
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FRAME: 35 TM: 57.9
ABSLT TPS(%) 0.0 CALC LOAD(%) 1.6 COOLANT(°F) 167 ENG SPEED(RPM) 825 FUEL SYS 1 CLSD FUEL SYS 2 N/A IAT(°F) 54 IGN ADV(°) 20.0 LT FTRM1(%) 16.4 MAF(LB/M) 0.57 MAP("HG) 7.7 MIL STATUS On O2S11(V) 0.715 O2S12(V) 0.450 OBD2 STAT CA ST FTRM11(%) 6.3 ST FTRM1(%) 6.3 VEH SPEED(MPH) 0
Comments welcome..
Spoon
------------------ "Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut [This message has been edited by Spoon (edited 02-06-2020).]
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OntarioKev
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FEB 07, 10:48 AM
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Are those the only parameters you can log? It doesn't appear to contain any of the misfire counts for the cylinders. I do see LT fuel trims sitting at 16% in some areas which isn't ideal (not the end of the world though).
Please let us know if you are able to log other parameters.
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Spoon
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FEB 07, 02:36 PM
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quote | Originally posted by OntarioKev:
Are those the only parameters you can log? It doesn't appear to contain any of the misfire counts for the cylinders. I do see LT fuel trims sitting at 16% in some areas which isn't ideal (not the end of the world though).
Please let us know if you are able to log other parameters. |
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I'm still learning this scanner Actron 9680. I just upgraded the scanner software and it displays a lot of good info. In my opinion their software for the PC program sucks. It lags behind the scanner upgrade instructions. When the scanner shows "PRINT ALL" and I press the scanner button I would expect to see all the data printed out.
Just to use the PRINT OPTION the PC program instructions mention USB & Serial connector (scanner only has USB connector & cable) and what to look for and where to look in "Device Manager" for the com port # if it doesn't show up on the scanner yada, yada. It's like going back to Windows 95. I've tried to run this program on 3 different PC's --Win 7, 8.1 & 10 all professional level. It was only chance that the print out in above posting occurred. Sorry for the rant. I'll see if I can get a more complete print out even if I have to transpose data from the scanner using something called paper & pencil.
Spoon
------------------ "Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut
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Phil
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FEB 07, 05:58 PM
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I chased a misfire in my 3800sc for 3 years - finally found it. Turns out three of the bolts on the super charger would loosen up and develop a slight vacuum leak. Leak wouldn't show up using a spray test
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Spoon
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FEB 07, 09:55 PM
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Bet you were a happy camper that day! Plus an inexpensive fix not counting any unneeded parts you threw at it over the years.
Spoon
------------------ "Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut
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Dennis LaGrua
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FEB 10, 09:42 PM
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Your PCM is trying to increase fuel as the LTFT and STFT are both going positive. Anything over 5% is typically a concern. ------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
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Spoon
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FEB 12, 10:54 PM
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quote | Originally posted by Dennis LaGrua:
Your PCM is trying to increase fuel as the LTFT and STFT are both going positive. Anything over 5% is typically a concern.
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Dennis, I agree with your prognosis. Just have to figure out whats causing the lean condition at 3k rpm. My scanner does show voltage wave forms but it doesn't seem to print them out. I'll try doing a video of the scanner screen using my cell phone.
Spoon------------------ "Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut
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Madess
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FEB 16, 03:51 PM
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Ok, so I put in the Walbro fuel pump. I turned the car to on, and it was still a little over 40psi. So as I test, I connected it directly to 12v and it showed 55psi at the fuel rail. I then started the car, and the pressure dropped back to 40psi. I am assuming the has something to do the fuel pressure regulator. When I hit the gas the fuel pressure really doesn't change.
This is what the fuel connections look like.
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Spoon
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FEB 16, 10:17 PM
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Madess, your description & pic look proper. A few days ago I was trying to do more scans for my misfire and ran out of gas. I'll try again after I fuel up.
Spoon
------------------ "Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut [This message has been edited by Spoon (edited 02-16-2020).]
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