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Nick Triesch

02-09-2018 06:10 AM

02 sensor other plug

On a 84, 85 911, the 02 sensor has two plugs. The big plug measures the tiny amount of voltage to measure the oxygen in the exhaust. Then there is the two prong plug. Can someone tell me what this plug does. Just cant find it. Nick.

HaroldMHedge

02-09-2018 06:18 AM

Off the top of my head, I would say it's for heating the sensor so that it operates correctly faster.

Nick Triesch

02-09-2018 06:23 AM

Thanks! Got it!

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