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928 s4 mystery wires

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Old 11-21-2023 | 10:56 PM
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928s4newbie
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Default 928 s4 mystery wires

Hey guys I pulled the intake manifold off and there are 2 wires coming out of the block that are cut. No idea what they're for. Any help is much appreciated.


Close up yellow and black wires
Old 11-21-2023 | 11:14 PM
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Ask the PO...not Porsche..

Heres a new one, and thats not even a broken old one..also pictured.

EDITED: YEs, I can see the correct wire colors on the plug end...these were....KS



Last edited by Speedtoys; 11-21-2023 at 11:33 PM.
Old 11-21-2023 | 11:19 PM
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GP White 928 S4
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To clarify - those are (were) your knock sensors - you'll need to order 2 replacements.
Old 11-21-2023 | 11:30 PM
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Originally Posted by GP White 928 S4
To clarify - those are (were) your knock sensors - you'll need to order 2 replacements.
thank you thank you thank you
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Old 11-22-2023 | 06:27 PM
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awilli6
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From: Memphis, TN 1987 S4
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http://www.dwaynesgarage.norcal928.org/

Look at Dewayne’s write up on intake refresh. I used this to complete my first top End refresh. It's complete with pictures and gives names of parts, torque values, wire routing, etc. He's got the water pump and timing belt also included in the write-up. Just use the information you need.

Ash
Old 11-27-2023 | 02:37 PM
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not sure if this will help or not...928 workshop manuals


www.wailtail.com/manual/
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