Re: Runs rough, Diag with scanner and scope

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Posted to Technical Discussion Forum on 2/8/2021 1 Reply

[speed sensor input to PCM] 98 Chevy RWD van 1/2 ton. Complaint was erratic speedometer operation and abs operation intermittent. New speed sensor installed at another shop.

[speed sensor PCM output]

I think what's key is knowing when to use a scope. Every... Login to read more.

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