O2's go rich and stay there
07-16-2007, 09:27 AM
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O2's go rich and stay there I drive for about 20 minutes and bam they go rich. It kills off the STFT's and LTFT's and the car just eats gas. I know this is a bad thing and have HPT to watch it happen. I'm reading up on how to diagnose this and see that the proportional fueling might help me but I want to ask what to look at.
Can anyone help me find what is causing the 02's to go rich and stay there?
Oh and this all started when I put on the LT's, cats and Y-pipe.
Also when the KR goes above 2 they sweep from rich to lean twice then back to rich until the KR goes above 2 again.
Can anyone help me find what is causing the 02's to go rich and stay there?
Oh and this all started when I put on the LT's, cats and Y-pipe.
Also when the KR goes above 2 they sweep from rich to lean twice then back to rich until the KR goes above 2 again.
Last edited by FirebirdWS62K1; 07-16-2007 at 09:32 AM.
07-16-2007, 05:54 PM
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Cat overtemp protection would act this way but usually needs
you to get on it some; then it will stick around for a while. Look
at the commanded fuel-air multiplier and see if it's looking like
what is commanded in the COT table. If you want to be sure,
change the COT enrichment to some unique value like 1.234
so it will be obvious if it's active).
you to get on it some; then it will stick around for a while. Look
at the commanded fuel-air multiplier and see if it's looking like
what is commanded in the COT table. If you want to be sure,
change the COT enrichment to some unique value like 1.234
so it will be obvious if it's active).
07-16-2007, 07:58 PM
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Originally Posted by jimmyblue
Cat overtemp protection would act this way but usually needs
you to get on it some; then it will stick around for a while. Look
at the commanded fuel-air multiplier and see if it's looking like
what is commanded in the COT table. If you want to be sure,
change the COT enrichment to some unique value like 1.234
so it will be obvious if it's active).
you to get on it some; then it will stick around for a while. Look
at the commanded fuel-air multiplier and see if it's looking like
what is commanded in the COT table. If you want to be sure,
change the COT enrichment to some unique value like 1.234
so it will be obvious if it's active).
