Knock Senson - 1 pin or 2?
I'm in the process of rebuilding a blown motor, but the knock sensor was destroyed when the motor was pulled out. Looking at replacements on ebay they're showing two pins, but looking at what's left of the one on the motor looks like just one. Any advice?
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Skip it - it doesn't actually help the engine anyway, and the EEC can't tell if it's disconnected/missing/connected & working perfectly.
But if you're determined, just look at the truck wiring - are there 2 wires, or 1? These suggest there are 2: https://www.supermotors.net/getfile/...wiring9295.jpg (phone app link) https://www.supermotors.net/getfile/...connectors.jpg (phone app link) |
It will be known missing should his engine start pinging for some reason.
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Unfortunately I have no idea which plug in the engine bay goes to the knock sensor. I didn't pull the motor out, and it's a mess of wires. Once I get the new motor built my next puzzle will be figuring out what plug goes where...
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Originally Posted by raski
(Post 6078983)
It will be known missing should his engine start pinging for some reason.
Originally Posted by AR-Trvlr
(Post 6079061)
Unfortunately I have no idea which plug in the engine bay goes to the knock sensor.
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You want the EEC to know its pinging so it will back off the timing if it is pinging, that's why the sensor is there in the first place.
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Originally Posted by Steve83
(Post 6079425)
Did you look at the diagrams I posted?
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Originally Posted by raski
(Post 6079604)
You want the EEC to know its pinging so it will back off the timing if it is pinging, that's why the sensor is there in the first place.
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Originally Posted by Steve83
(Post 6081342)
Good theory, but it doesn't actually work that way. Even when these engines were new, they made so much mechanical noise that the hypersensitive KS was constantly signalling the EEC that it was knocking. After this many years, with this many miles, it'll be even worse. So it's just not worth the trouble of repairing such a useless sensor. Have you noticed that Ford deleted that sensor in '96?
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They didn't know it when they designed these early EECs & KSs. But they found out later, which is why they stopped using a KS. I found out from one of them, and I'm passing that info along. It doesn't make me smarter than them - just better-informed than you.
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