Hit a snag...
06-01-2008, 12:19 AM
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Hit a snag... I just replaced the opti on my z28. I got the MALF 16 or whatever it is code. So I just finished replacing the opti and the car turns over, has spark (checked plug wires) and you can smell fuel coming from the exhaust. But it won't catch.
Any suggestions? I'm going to put the data logger on and try turning it over tomorrow, hopefully I can pull a code...
Any suggestions? I'm going to put the data logger on and try turning it over tomorrow, hopefully I can pull a code...
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06-01-2008, 12:06 PM
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The summit brand is $250 and the acdelco is $310. I paid $310, so I'm sure it's the ACDelco. The code is gone, no codes at all right now. It might be bad gas? I am pretty sure the wires are on right, but I will have to go check (again). I'm not terribly worried anyways with the gas prices as is, I don't think I want to put premium in a s/c 350 
06-01-2008, 01:41 PM
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No codes at all. Datamaster-EE. All the vitals check out and are fine, the only thing that worries me is that I have less than 10 volts when cranking. It usually is between 7 and 10 volts.
Last edited by disiac5.7; 06-01-2008 at 01:52 PM.
06-01-2008, 02:52 PM
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That voltage is ok when cranking (7 is low but as long as it cranks--ok). Does datamaster show the rpm changing, map, injector dc?
06-01-2008, 06:59 PM
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I didn't notice this before, it's showing knock count when cranking. My best guess right now is plug wires, cuz when I switched two of them (3 and 5) the car almost started. They are such a PITA to reach with the vortech in the way.
06-01-2008, 07:12 PM
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It's reading everything... Inj pulse, spark adv., etc. The rpm is staying constant @ 50 rpms I believe, the laptop took a dive on me and I need to charge it to get some info.
I didn't notice this before, it's showing knock count when cranking. My best guess right now is plug wires, cuz when I switched two of them (3 and 5) the car almost started. They are such a PITA to reach with the vortech in the way.
I didn't notice this before, it's showing knock count when cranking. My best guess right now is plug wires, cuz when I switched two of them (3 and 5) the car almost started. They are such a PITA to reach with the vortech in the way.
06-01-2008, 09:12 PM
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The rpms do start at 125 and go up, 150 to 175, down to 75, 125, 175, 200, and so forth.
The data I pulled:
RPM/RPM16: 175/175
MAP KPa: 94.1
Fuel Trim Cell: 0
LTerm Counts: 128/128
STerm Counts: 128/128
BPW mS: 29.24/29.24
INJ DC (calc): 4.3/4.3
o2 sensor mV: 781/879
AFGS: 0.00 <------------- MAF reading 0 gm/sec?
TPS %: 0
TPS volts: .67
Spark Advance: 13.0
Spark Retard: 0
Knock count: 1622 <----- this is my worry
EGR DC: 0
CCP DC: 0
IA Temp in Celc: 24.5 degrees
A/C Temp in Celc: 20.0 degrees
A/C Press PSI: 84.0
Idle RPM: 3188 <----------wtf?
IAC Pos: 154
The data I pulled:
RPM/RPM16: 175/175
MAP KPa: 94.1
Fuel Trim Cell: 0
LTerm Counts: 128/128
STerm Counts: 128/128
BPW mS: 29.24/29.24
INJ DC (calc): 4.3/4.3
o2 sensor mV: 781/879
AFGS: 0.00 <------------- MAF reading 0 gm/sec?
TPS %: 0
TPS volts: .67
Spark Advance: 13.0
Spark Retard: 0
Knock count: 1622 <----- this is my worry
EGR DC: 0
CCP DC: 0
IA Temp in Celc: 24.5 degrees
A/C Temp in Celc: 20.0 degrees
A/C Press PSI: 84.0
Idle RPM: 3188 <----------wtf?
IAC Pos: 154
06-02-2008, 05:26 PM
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The rpms do start at 125 and go up, 150 to 175, down to 75, 125, 175, 200, and so forth.
ok no problem
The data I pulled:
RPM/RPM16: 175/175
MAP KPa: 94.1
Fuel Trim Cell: 0
LTerm Counts: 128/128
STerm Counts: 128/128
BPW mS: 29.24/29.24
that is WAY high! Mine cranks with and starts with ~8 ms
INJ DC (calc): 4.3/4.3
mmm mine is ~2 but I have 42 lbs and it is started at that point
o2 sensor mV: 781/879
well that implies it is hitting since low is lean and missing is lean
AFGS: 0.00 <------------- MAF reading 0 gm/sec?
normal until it fires up
TPS %: 0
TPS volts: .67
Spark Advance: 13.0
Spark Retard: 0
all normal
Knock count: 1622 <----- this is my worry
not to worry it starts at some point meaningless until the number changes
EGR DC: 0
CCP DC: 0
IA Temp in Celc: 24.5 degrees
A/C Temp in Celc: 20.0 degrees
A/C Press PSI: 84.0
all normal
Idle RPM: 3188 <----------wtf?
normal
IAC Pos: 154[/QUOTE]
ok
ok no problem
The data I pulled:
RPM/RPM16: 175/175
MAP KPa: 94.1
Fuel Trim Cell: 0
LTerm Counts: 128/128
STerm Counts: 128/128
BPW mS: 29.24/29.24
that is WAY high! Mine cranks with and starts with ~8 ms
INJ DC (calc): 4.3/4.3
mmm mine is ~2 but I have 42 lbs and it is started at that point
o2 sensor mV: 781/879
well that implies it is hitting since low is lean and missing is lean
AFGS: 0.00 <------------- MAF reading 0 gm/sec?
normal until it fires up
TPS %: 0
TPS volts: .67
Spark Advance: 13.0
Spark Retard: 0
all normal
Knock count: 1622 <----- this is my worry
not to worry it starts at some point meaningless until the number changes
EGR DC: 0
CCP DC: 0
IA Temp in Celc: 24.5 degrees
A/C Temp in Celc: 20.0 degrees
A/C Press PSI: 84.0
all normal
Idle RPM: 3188 <----------wtf?
normal
IAC Pos: 154[/QUOTE]
ok
06-02-2008, 09:53 PM
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