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07-21-2019
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Join Date: May 2019
Location: Vanderhoof British Columbia Canada
Posts: 34
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Code 42 EST
Just pulled the plenum and replaced injectors and starter put it back together and is still idling ruff and check engine light comes on, checked codes and got a code 42 electronic spark timing. It’s a 1990 ZR1 with just under 10,000 miles on it. Any ideas would be great thanks.
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