Replaced Alternator, now AFR's are lean...
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Teching In
Joined: Jan 2008
Posts: 12
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From: Tyler, Tx
Replaced Alternator, now AFR's are lean... I had my LS1 RX7 retuned a few weeks ago and we had a low voltage issue.
HPTuners wouldn't flash the PCM so we put a jumpbox on the battery. It flashed the PCM and my WOT AFR was 13.0
Yesterday my Alternator died, so I replaced it and now my WOT AFR is 14.0-14.3
Just wondering if this would normally happen due to voltage issues or something else happened during the meantime.
HPTuners wouldn't flash the PCM so we put a jumpbox on the battery. It flashed the PCM and my WOT AFR was 13.0
Yesterday my Alternator died, so I replaced it and now my WOT AFR is 14.0-14.3
Just wondering if this would normally happen due to voltage issues or something else happened during the meantime.
Thread Starter
Teching In
Joined: Jan 2008
Posts: 12
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From: Tyler, Tx
TECH Enthusiast
Joined: Mar 2010
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From: Utah
Well my old UEGO, would stay in the 14's when the sensor died. I spent hours trying to fix my tune the first time it happened. Then I came to the realization, that my air fuel wouldn't change after adding any fuel.
Thread Starter
Teching In
Joined: Jan 2008
Posts: 12
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From: Tyler, Tx
I had a brand new sensor fail within 2 months, age is irrelevant..
Heres a trick that sometimes works..
Remove your Wideband sensor, get a mapgas or propane torch and heat the end of the sensor until it is glowing hot, sometimes this will burn off the crap that is causing the fault, worth a shot..and if it works you saved yourself $80 on a new sensor.
Heres a trick that sometimes works..
Remove your Wideband sensor, get a mapgas or propane torch and heat the end of the sensor until it is glowing hot, sometimes this will burn off the crap that is causing the fault, worth a shot..and if it works you saved yourself $80 on a new sensor.
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I had a brand new sensor fail within 2 months, age is irrelevant..
Heres a trick that sometimes works..
Remove your Wideband sensor, get a mapgas or propane torch and heat the end of the sensor until it is glowing hot, sometimes this will burn off the crap that is causing the fault, worth a shot..and if it works you saved yourself $80 on a new sensor.
Heres a trick that sometimes works..
Remove your Wideband sensor, get a mapgas or propane torch and heat the end of the sensor until it is glowing hot, sometimes this will burn off the crap that is causing the fault, worth a shot..and if it works you saved yourself $80 on a new sensor.
Have you tried to recalibrate the sensor in open air?
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