Hi. Can anyone tell me what the two wire plugged connection directly behind the #4 spark plug wire and directly below the heater core hose connections goes to? In wrestling to get the heater hoses off I accidentally severed a wire. thanks.

 

Oh, yeah. '98 4.6.

 

Might be the 2 wire to the passenger ox sensor.
what color are the wires

 

Hey Toyz, thanks for engaging. One wire is plain black, one is plain white. I don't THINK it's the O2 since the wires APPEAR to run off under the intake but I can't see very well since everything is shoehorned up in there. Sorry that I'm not able to post a picture.

It's just under the fuel lines on the back side of the passenger side engine; the soft fuel lines that are white. Round black plug, two wire. I'd try to splice, but it broke right at the plug. After a test drive, I'm not throwing a code yet. My uneducated guess is knock sensor.

 

hmm, lemme go look. I was thinking cylinder head temp sensor but most those were front drivers side.

Are you sure it's not black/yellow

 

Alright brother, that IS the one. I just went and looked again, and unless my eyes are playing tricks, my wire is white. Either way, that's the plug. Any ideas?

 

The ONLY one back there is the knock sensor. O2's are 4 wire, the cht is d-side front. But, I thought the knocks were white and black.

 

UNLESS, it's the IAC harness. That one is back there as well, but I thought that was closer to #8.

 

Just reinstalled the blower/intake etc on my 01 today- not sure of the differences between the 5.4 and the 4.6 but I believe the only wires back there are- 02 sensor, knock sensor, the wire for the #4 COP and possibly the fuel injector wire.. Pretty sure thats it that far back....

 

Thanks for the input guys. After driving about 75 miles last night, I never did throw a code.

This sucks, I had my intake out less than a year ago to change the gaskets and I really didn't want to do that again so soon. However, as much as I drive I really need the a/f mix to be right.... here we go again.