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Old 05-18-2015, 03:58 AM   #29 (permalink)
2000mc
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Join Date: Oct 2008
Location: Lawrence, KS
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Saturn-sold - '99 saturn sc1
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In the process of replacing the fuel pressure regulator, is there a wire harness or connector that you move, or even touch? If so try to figure out if / which wiring that could effect fuel trim is there. Then with the engine running and monitoring fuel trims and anything specific to what might be in the harness there, move the harness around / push/ wiggle connectors.
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