Autotapped the car today, need help interpreting
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TECH Regular
Joined: Oct 2003
Posts: 409
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From: Miami, FL
Autotapped the car today, need help interpreting I've been having a ton of intermittent B1S1 o2 sensor problems (for a description of what is happening, check out my mis-titled thread HERE since my headswap, and I also just started hearing some detonation at low RPM under load. Today, I logged about an hour of driving with Autotap, including normal city driving, highway cruising, and some WOT pulls.
I'm learning about this stuff but I would really like some input and analysis from you guys who know a whole lot more than I do. From what I can see and watched as we logged, I get detonation and a good bit of KR from ~1500-2000 RPM. I didn't see any during WOT, only immediately after when I let off. I also see that my fuel trims are all over the map.
Excel spreadsheet: http://www.slowls1.net/autotap_4505.xls
RAR of raw Autotap logs: http://www.slowls1.net/ataplogs.rar
We also scanned the DTCs, it isn't setting a MIL at this time but in the freeze frame we found these codes. I have snapshots of the information stored at the time each code was set, if you need to see those please let me know.
P1134 HO2S Transition time ratio bank 1 sensor 1
P0131 HO2S Circuit Low Voltage Bank 1 Sensor 1
P1637 Generator L-Terminal Circuit
P1626 Theft Deterrent Fuel Enable Signal Not Received
Could the B1 o2 be the problem, ie, cause a bad enough lean condition resulting in the detonation I'm hearing and seeing? Can I switch to a Corvette rear o2 for B1 only, and might that fix my problem? Anything you guys can tell me based on what you see in the logs will be greatly appreciated.
I'm learning about this stuff but I would really like some input and analysis from you guys who know a whole lot more than I do. From what I can see and watched as we logged, I get detonation and a good bit of KR from ~1500-2000 RPM. I didn't see any during WOT, only immediately after when I let off. I also see that my fuel trims are all over the map.
Excel spreadsheet: http://www.slowls1.net/autotap_4505.xls
RAR of raw Autotap logs: http://www.slowls1.net/ataplogs.rar
We also scanned the DTCs, it isn't setting a MIL at this time but in the freeze frame we found these codes. I have snapshots of the information stored at the time each code was set, if you need to see those please let me know.
P1134 HO2S Transition time ratio bank 1 sensor 1
P0131 HO2S Circuit Low Voltage Bank 1 Sensor 1
P1637 Generator L-Terminal Circuit
P1626 Theft Deterrent Fuel Enable Signal Not Received
Could the B1 o2 be the problem, ie, cause a bad enough lean condition resulting in the detonation I'm hearing and seeing? Can I switch to a Corvette rear o2 for B1 only, and might that fix my problem? Anything you guys can tell me based on what you see in the logs will be greatly appreciated.
