What is it?

[Granddaddy Marq]

There is some kind of sensor in the valley of the block, under the lower intake on the 4.6. The 2 motors I'm dealing with have 2 sensors. They are defferant between the 2 motors. I have seen 4.6's with 1 sensor, and soom with out any. And now the questions. What is this sensor? What does it sense?


Thanks Louis


P.S. Feel free to corect my spelling! :)

[fastblackmerc]

There is some kind of sensor in the valley of the block, under the lower intake on the 4.6. The 2 motors I'm dealing with have 2 sensors. They are defferant between the 2 motors. I have seen 4.6's with 1 sensor, and soom with out any. And now the questions. What is this sensor? What does it sense?


Thanks Louis


P.S. Feel free to corect my spelling! :)

They are knock sensors.

'03's had one, '04's had 2.

[Rockettman]

^^^ ahhh...you beat me too it. :beer:

[Granddaddy Marq]

Do they have to be plugged in? Or can they be diconnected?

[Rockettman]

They need to be plugged in. They are connected to the control module for the engine; and as such adjust other things with their readings.

[Granddaddy Marq]

I am attempting to put an older Mark VIII motor in an 01 Cobra Mustang. The Knock sensors don't apear to interchange. Any suggestion?

[fastblackmerc]

I am attempting to put an older Mark VIII motor in an 01 Cobra Mustang. The Knock sensors don't apear to interchange. Any suggestion?

Obtain the correct ones.

[Blackened300a]

If you have pinging or knock. The sensor is designed to detect it and pull timing.

[Granddaddy Marq]

Obtain the correct ones.


May have to change wire conectors. The sensors do not seam to change out.