Hey, i have an 86 6.9 f250. i have a wire that is positive when ignitions turned on. it was pulled so there is wire exposed. wheres its homee???

its a foot long. the wire comes from inbetween the FRONT PASSENGER side glowplug and the dual pronged plug after that (in the harness). please help!!

 

Post a picture. What color is it.

 

I saw the picture in your other thread about it. We're all just guessing what it goes to unless you give us the color coding on it.

 

its red painted grey

 

i guess what im asking is, you guys dont have a wire coming out of the glow plug harness that is inbetween the passenger front glowplug and the next plug after? to the front?

 

Just went out and took these pictures. I have what looks to be a stock wiring connector coming from that bundle which plugs into a wire that goes to the top of my filter mount. Look at my pictures below.

Note I had this setup when I got the truck, found out the hard way when I went to buy a fuel filter that the mount is for a 7.3 filter. I am soon going back to a simple 6.9 one piece filter and head with a purge valve in it with less spots for leaks.

http://img.photobucket.com/albums/v4...s/PA061259.jpg

http://img.photobucket.com/albums/v4...s/PA061258.jpg

http://img.photobucket.com/albums/v4...s/PA061260.jpg

 

Ok, now we're getting somewhere. Red is +12v with ignition. Going up to the top of the filter head is a fuel heater.

You can get a 1 piece filter that screws onto the 7.3 filter head to eliminate the bottom cup part. I'd have to get the number from my filter or filter box outside as I don't remember the number off hand.

 

thats it, but i dont remember seeing any screws on my 6.9 filter for this? but that is the wire. the one with the plug!

 

The 6.9 used a fuel heater incorporated into the fuel line between the fuel pump and the filter head. The 7.3 filter heads had the heater in the head itself.

 

so where would the positive ignition wire go?

 

Ok, The red wire (with light green stripe) feeds a couple things so it will be to one of the following locations:

Fuel shutoff solenoid, but you already have that plugged in and have tested it.

Fuel heater (Red wire to dark blue wire). But you already have that in place.

Engine temperature switch (On top of the block next to the thermostat housing) This is a temperature based switch that turns on the cold idle solenoid and cold idle advance when the engine is below 112*F. The switch has 2 flat spade terminals on top of it, and I've seen these broken off before from getting tugged on, and it sounds like your wire has been tugged on, so it's a good place to check. This switch should have a red wire on one terminal and Red/yellow wire on the other. Doesn't matter which terminal is what color. If the engine is cold, turn your key on and you should be able to measure 12v at the idle solenoid and advance solenoid connections. If not, your switch is bad or the wire is torn off of it.

The next place you'll see a red wire up there is feeding the glow plug control. Is your wait to start light operating as it should? If the GP's are cycling then you can likely discount the GP controller as the mystery wire.

Based on the location of the wire, I'd bet it's to the temperature switch.

http://www.airplanesathome.com/FTEpics/Ign2.gif

 

When you say plug, not the one I pictured?

Are you talking about the one that pushes onto a post and looks like an elbow?

There is one of those that goes onto the bottom of the fuel filter setup whether its the dish or a all in one fuel filter unit, that is for the water seperator light? That is a unique looking connection. There are a couple on the glowplug solenoid and one on the starter solenoid.

Lol, I'm still not sure what were talking about.

 

lol! Me either! I just realized you posted the pictures and not the OP..

 

Sure sounds like the fuel heater. A round plug with a single wire right?

It's a section of the steel fuel line between the lift pump and filter head that's about twice the diameter of the rest of the line.

On edit: Do you have a tach? My tach sensor connector is a round plug with two pins for terminals. One wire is black/green tracer and the other is green/black tracer...

 

I got the tach sensor from the 86 sitting on my back porch, is your tach working right? If its not then it sounds like your tach wire is missing its wire.