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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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The spliced sensors are the problem. You need to use the factory sensors. From the factory manual
“911 Carrera 4 has a new, water-proof oxygen sensor. Water-proof means that the upper sensor section and housing are connected leak-proof with a later welded seam and previous reference air openings are omitted. Reference air is now taken via the connecting lead and plug connection. For this reason it is important to keep contact solutions, lubricants, liquids or similar products out of the 3-pin plug, since they would lead to sensor failure”
We ran into this problem on our own project car after trying to used spliced sensors as well.
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