White 10 pin connector...

Topic: White 10 pin connector... (Read 11160 times) previous topic - next topic

White 10 pin connector...

Reply #60 – December 10, 2008, 05:09:33 PM

1. Which ECU are you running?
2. Does your HEGO harness have grounds on it?
3. Are the other body grunds for the car present and in good condition?

White 10 pin connector...

Reply #61 – December 10, 2008, 06:35:57 PM

Currently a Mustang 5spd computer....but it WAS a mark vii auto comp originally. I do believe the hego harness DOES have it's own ground....which, I think this one actually WAS...because I found diagrams back then and what I thought was odd was that the wire was said to be "Oxygen Sensor Harness Ground"....when the sensors themselves each had a ground that was bolted to each cylinder head.

AFAIK anyway...the grounds that I know of are good. That braided strap near the brake booster is all fine, was sure to check that one back then kinda more semantics than anything.

White 10 pin connector...

Reply #62 – December 13, 2008, 12:56:20 PM

Quote from: ZondaC12;247117

Currently a Mustang 5spd computer....but it WAS a mark vii auto comp originally. I do believe the hego harness DOES have it's own ground....which, I think this one actually WAS...because I found diagrams back then and what I thought was odd was that the wire was said to be "Oxygen Sensor Harness Ground"....when the sensors themselves each had a ground that was bolted to each cylinder head.

AFAIK anyway...the grounds that I know of are good. That braided strap near the brake booster is all fine, was sure to check that one back then kinda more semantics than anything.

Your oxy. sensors ground should be bolted to the back of the head. The orange wire everyone seems to find isn't even redundant, It's just not used, at least on my car.

White 10 pin connector...

Reply #63 – December 13, 2008, 01:27:33 PM

Yes there are two of em, each one comng out of the wire looming wrapped around each oxygen sensor's plug (the harness side of things). The wire has a loop terminal on the end of it and is separate from the other four wires, which naturally go to the sensor plug. And that is grounded to the head, for each sensor.

Good thing I just thought of it! Good name they have for the site..stuck in my mind. http://www.veryuseful.com/mustang/tech/engine/images/mustangEngineHarness.gif

In that diagram, number 19 I think is what were talking about, and it's the one that was broken on my car, and once grounded, allowed the car to start. It says "HEGO Sensor Ground".

It's well known that oxygen sensors aren't even needed for it to run, albiet terribly. That was what made me ignore them for the most part way back when...didnt make sense that they could make it not even fire. Yet once I stripped that wire (very short so I could barely do it) and spliced in another and grounded it, it started.

White 10 pin connector...

Reply #64 – December 13, 2008, 02:28:57 PM

obviously HEGO are the o2 sensors, but what does HEGO stand for?

White 10 pin connector...

Reply #65 – December 13, 2008, 03:06:47 PM

Heated Exhauss Gas Oxygen sensor. Two of the wires are for the heating element. Helps to get it up to temperature quicker and get a reading ASAP after the engine is started.