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Had any luck with this? After a bit of thought the lean indications aren't effecting things all that much but are a symptom of something wrong. In the long term BLM it's showing lean but short term INT it's not so bad. What's happening is the ECM is doing it's job and adding fuel (BLM) to keep the mixture stoich (INT). It's doing this to compensate for something. What that something is, is the magic question. I don't know. Do you have a bad exhaust leak probably before the O2 sensor?At any rate this may or may not have anything to do with your original issues and probably not the source of the knock.Sorry I wish I could be of more help.
Had any luck with this? After a bit of thought the lean indications aren't effecting things all that much but are a symptom of something wrong. In the long term BLM it's showing lean but short term INT it's not so bad. What's happening is the ECM is doing it's job and adding fuel (BLM) to keep the mixture stoich (INT). It's doing this to compensate for something. What that something is, is the magic question. I don't know. Do you have a bad exhaust leak probably before the O2 sensor?
At any rate this may or may not have anything to do with your original issues and probably not the source of the knock.
Sorry I wish I could be of more help.
