Intermittent AFR's wildly swinging
Oct 18, 2013, 04:24 PM
#1
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Intermittent AFR's wildly swinging
Hi all,
Trying to determine what's going on.
Setup
FIC2150
E85
SD
Tial VTA Bov
EGR Delete
Seems more stable 1st thing in the AM.
Idles 14.5 - 15.3 or so
STFT close to +-2%
Cruise fine 2800-3k for 5 minutes or so
then AFR's start swinging, on Decel injectors stay Rich and don't shut.
after a bit it will recover eventually and be stable for a bit and Decel normally.
Any thoughts?
o2 sensor
MAP Sensor
thanks
Trying to determine what's going on.
Setup
FIC2150
E85
SD
Tial VTA Bov
EGR Delete
Seems more stable 1st thing in the AM.
Idles 14.5 - 15.3 or so
STFT close to +-2%
Cruise fine 2800-3k for 5 minutes or so
then AFR's start swinging, on Decel injectors stay Rich and don't shut.
after a bit it will recover eventually and be stable for a bit and Decel normally.
Any thoughts?
o2 sensor
MAP Sensor
thanks
Oct 18, 2013, 08:29 PM
#2
Hi all,
Trying to determine what's going on.
Setup
FIC2150
E85
SD
Tial VTA Bov
EGR Delete
Seems more stable 1st thing in the AM.
Idles 14.5 - 15.3 or so
STFT close to +-2%
Cruise fine 2800-3k for 5 minutes or so
then AFR's start swinging, on Decel injectors stay Rich and don't shut.
after a bit it will recover eventually and be stable for a bit and Decel normally.
Any thoughts?
o2 sensor
MAP Sensor
thanks
Trying to determine what's going on.
Setup
FIC2150
E85
SD
Tial VTA Bov
EGR Delete
Seems more stable 1st thing in the AM.
Idles 14.5 - 15.3 or so
STFT close to +-2%
Cruise fine 2800-3k for 5 minutes or so
then AFR's start swinging, on Decel injectors stay Rich and don't shut.
after a bit it will recover eventually and be stable for a bit and Decel normally.
Any thoughts?
o2 sensor
MAP Sensor
thanks
Is this happening as soon as the coolant reach normal temp?
Oct 19, 2013, 06:17 AM
#3
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domyz
I reset trims and LTFT Mid was heading towards -10% after a few cycles
so I'm guessing that's what the issue is.
Where should I remove fuel from RPM-VE or Map?
I don't want to screw up idle
I attached a log file for reference.
Thanks for your help. I appreciate your input
current settings
I reset trims and LTFT Mid was heading towards -10% after a few cycles
so I'm guessing that's what the issue is.
Where should I remove fuel from RPM-VE or Map?
I don't want to screw up idle
I attached a log file for reference.
Thanks for your help. I appreciate your input
current settings
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