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The dreaded code 42, 1988 2.8 codeW
Posted to Technical Discussion Forum on 4/27/2001 18 Replies

The culprit is a 1988 Chev Celebrity, 2.8 code W. It sets a code 42, EST code and runs poorly because of it. Here is the EST and Dref signal , Dref and Bypass signal , and knock sensor signal . As you can see it will not pull the bypass signal high. All these ... Login to read more.

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