EEC-IV issues

ekim · Apr 29, 2012

hello, i have a 92 lx 5.0 and am having some issues with the diagnostic outlets under the hood. it is a 5 speed and the air conditioning has been removed. after buying a obd-1 scan tool i realized that someone had cut some of the wires to the outlets under the hood. i have two green with orange stripe wires and one white with red stripe wire connected to the larger of the two outlet plugs. there are also two other wires with cut ends hanging there. one is white with a red stripe and the other is tan with a green stripe. im assuming one of them would be the ground but there isnt a ground plug anywhere so im at a loss. could one of them of had something to do with the a/c? i was sent a diagram from this site last night but it dosent match up to mine. how many wires should be connected to the large outlet? what colors are they? can someone please look at theres and get back to me as soon as possible. theres no other 5.'0s in the area to compare mine two and its driving me mad. just got the car so dont know whos done what to it. thanks to anyone who might be able to help.

OonDeanisS · Apr 29, 2012

look through the "surging idle checklist" by jrichker. the wiring diagram is in there. there should only be 3 wires on the large test connector and one on the small STI connector.

http://www.stangnet.com/mustang-forums/threads/help-me-create-the-surging-idle-checklist.698148/

jrichker · Apr 30, 2012

computer-self-test-connector-with-check-engine-light-01-65-gif.55021

The STI has a gray connector shell and a white/red wire. It comes from the same bundle of wires as the self test connector.

ekim · May 4, 2012

sorry about that. im new to this and didnt realize id replyed in the wrong place. the diagrams ive seen dont quite match what i have for wires under the hood. my diagnostic outlet has three wires connected to it. two green and orange, one white and red. the other two wires that appear to be cut are one white and red, and one tan and green. still unsure which if either is the ground wire. does anyone else have this wire color combo on there car? havent found any actual photos online of other cars wiring setups. does anyone know of any other vehicles with wires like mine? included is a pic of my plug and wires to help. the one that currently has the ground plug is two wires spliced together. the wire that actually comes from the harness is red and white. that was done by me just to see if it was really the ground or not. the two greens in the big plug were there when i got the car. the third wire coming from the plug is also two wires spliced together, the one coming from the actual harness is green and tan. sorry for the mess.... i need help.

jrichker · May 4, 2012

Your wiring is so butchered it looks like roadkill. Without actually being there to see the wiring and chase each wire back to its source, there is very little that I can do for you.

Maybe there is someone else who can sort out your mess. If there isn't , you get to replace the computer wiring harness. That's a time consuming and tiresome job.

If you want to chase the wires, yourself, here's the diagram & a website with other useful diagrams

Diagram courtesy of Tmoss & Stang&2birds

RacEoHolic330 · May 5, 2012

Wow. Wire nuts... not a good sign. That's probably only the beginning of your electrical nightmare.

Mark Palmer · May 5, 2012

I love this thread already.

old_blue · May 7, 2012

WOW looks messy. thank goodness for jrichter

Search

Search

EEC-IV issues

ekim

New Member

OonDeanisS

jrichker

StangNet's favorite TOOL

ekim

New Member

jrichker

StangNet's favorite TOOL

RacEoHolic330

I like to dress like a pretty girl

Mark Palmer

Banned

old_blue

Similar threads