just bouight truck has hesitation on accelerate guy bought from says its knock sensor unplugged passenger back side head i found a black plug unplugged 2 pins male, but i do not see where plugs in at

 

can you get a pic?

 

too short for pic, but its blasck looks like o2 plug but he says those are plugged in 4 sure, he said is machine says knock sensor unplugged, its a tube looking plug with 2 male pins down inside it rt behind intake against firewall and shor small harness rt out og bigger harness

 

sorry for all the typos, lol no lights on, runs ok but stumbles when gassing on it

 

well the knock sensor is in the middle of the block. directly under the intake.

 

trying to post pic but wants a url

 

its that plug in back of that pic passenger side behind those intake ports

 

this one?------------------------------\/

 

also found another plug back there its blue bright blue agaon round with 2 ears channels

 

the blue plug seems to be going under intake id say thats the knock sensor but it doesnt fit the black plug in harness, i know he changed motor, i just wonder if years were different

 

yes and i think i found the problem, he said the motor was out of a 98 f250 40k miles, truck is a 2000 i googled the sensor for both years and the plugs are different, thats y theirs 2 plugs unplugged, so now ho0w to make them work?

 

Splice wires??

 

Why would anyone in their right mind swap a PI 5.4L for an older non PI version with less power

 

knock sensor thats on engine 3wire and harness plug 2 wire, and changed cause 2000 5.4 blew up, 98 5.4 came from f250 with new engine 20k miles

 

But you put an older version 5.4L with non PI heads (less power) in a truck that already lacked power. Eh, just saying.