WaLieN

When cutting into my old knock sensor wire, I noticed that it might really be a two-wire (coaxial-like) system. It had a wire, then insulation, then more frayed wires, and another layer of insulation. When looking at the connector, I only saw one terminal. But upon closer inspection, it looks like there may be another very small terminal in it as well.

RotaryResurrection

iTrader: (8)

Nope, its one wire plus shielding. Same as an 02 sensor.

WaLieN

This is what I thought as well, but are you 100% sure? I tried to extend my "new" knock sensor so that it would reach the wiring harness (I was unable to route it under by myself), but when I fired up the car it threw a CEL for shorted knock sensor. Unless the minor extra length of wire increased the impedance out of range of the sensor (which I doubt), I really think it might be a positive/negative wire all in one.

I'm not trying to doubt your opinon, but I just want to be 100% sure.

stlFD

I had to strip and solder my knock sensor wire just yesterday because one of the connectors fell off. It is a single wire.

RotaryResurrection

iTrader: (8)

Yes, I'm sure. The knock sensor is the same for 87+ turbo cars, but the 87-88 ones have a larger square plug...with a single male terminal inside. How could it be 2 leads but only one terminal? It couldn't.

I've also had to splice and repair knock sensor wires, and 02 sensor wires. Both are a single wire with 2 layers of shielding over them to reduce EE since they are very low voltage leads.

I guess your splice didn't make such a hot connection, or you need to reset the ecu to clear an old code.

WaLieN

It wasn't throwing a code prior to me replacing it. I guess you are right about the poor connection. Thanks for all your input, I appreciate it very much.

Will shrink wrapping or electrical tape be able to handle the high heat inside the engine bay?