Need some help. The P0300 & P0174 are repeats from when the old engine was in. The GM crate motor went in and now they are back. The P0125 is new however and I have no clue where or why that one is here. How can I narrow down the misfire and the lean code? These are returning nightmares! My ignition system is new as well as plugs and the dealer just put this motor in. I took out the screen on the throttle body but its been like that for a while. I have no clue where to start with these returning nightmares.
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P0174 & p0300 & p0125
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by ssms5411Had to be evacuated Monday again after a fire was going on the hill behind us. Only 3-4 hours, they did a good job getting it under control. Especially...2 weeks ago