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      echoxozzy replied to the thread Chasing SES Code 43.
      Hooked the scanner up today and there are a few knocks detected when I turn the truck on or off. No accumulation at idle or when I drove...
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      echoxozzy replied to the thread Chasing SES Code 43.
      Using this flowchart from the pubs. Now I don't have a scan tool but I am pretty sure there is no knock at idle. I went on to test 2 and...
      • Code 43 Screenshot.png
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      echoxozzy replied to the thread Chasing SES Code 43.
      It is running premium fuel right now. Would that result in the computer allowing more spark advance?
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      echoxozzy replied to the thread Chasing SES Code 43.
      One symptom to add. Engine documentation said to set timing using the total timing method. When I checked that, I was getting 20 deg adv...
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      echoxozzy replied to the thread Chasing SES Code 43.
      I don't have the background to be able to answer this. Validated that the part number was correct on ACDelco's site. Torqued to 14...
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      Like the title says I am chasing my tail trying to figure out what is causing this. Background on the truck. It is 1989 V1500...
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