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Re: GTC ST05 Oxygen Sensor Tester
Posted to Tool & Equipment Forum on 5/8/2019 6 Replies

Ever use your hand as the signal?

Hold the wire and touch the battery post with your other [...] one wire sensor test.

You could see if the ecm would [...] + rich,- lean.

Just remember having an old one wire tester in one of my boxes. Rich,[...] switch ... Login to read more.

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