Unidentified lead hanging by engine S3c

Unidentified lead hanging by engine S3c

Author
Discussion

The Horse

Original Poster:

109 posts

87 months

Wednesday 7th March
quotequote all
Hi
Whilst replacing the oil filter I noticed this lead hanging down.
Any idea what it might be ?
I can't see any obvious place where it could go.
Thanks
David


v8s4me

6,119 posts

152 months

Wednesday 7th March
quotequote all
Hand brake light?

The Horse

Original Poster:

109 posts

87 months

Wednesday 7th March
quotequote all
No, that works.
David

v8s4me

6,119 posts

152 months

Wednesday 7th March
quotequote all
Reversing light? Oil pressure warning light? Basically, is there anything not working? If everything appears to be working normally then just tuck it up out of the way and ignore it. You could check to see if it is live I suppose.

The Horse

Original Poster:

109 posts

87 months

Wednesday 7th March
quotequote all
I've never noticed an oil pressure warning light. The gauge works ok. Should there be a warning light in the main warning light cluster ?
If there should be one, any idea where the sender is that might take this "spare lead" ?
The only issue I have is a big flat spot when the engine is cold, I thought the lead might be from a temp sensor that connects to the ECU... ??
Thanks
David
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v8s4me

6,119 posts

152 months

Wednesday 7th March
quotequote all
The Horse said:
.....I've never noticed an oil pressure warning light. The gauge works ok. Should there be a warning light in the main warning light cluster? ......
I think so. There's one on my V8S (it's the MIL light).

The Horse said:
....If there should be one, any idea where the sender is that might take this "spare lead" ?......
Somewhere around the oil filter/oil pump I think. One of the V6 owners will probably have a picture for you.

The Horse said:
....The only issue I have is a big flat spot when the engine is cold, I thought the lead might be from a temp sensor that connects to the ECU.........
Those sensors are usually on the top-side of the engine.

Edited by v8s4me on Wednesday 7th March 23:24

mentall

220 posts

63 months

Thursday 8th March
quotequote all
My (1990) S3C has no oil pressure light in the panel, and no wiring to one.

I've fitted a dual (gauge/light) sender and wired up to the (also unconnected) MIL light, but haven't tested it yet.

I had two 'mystery' connectors to the right rear of the engine; one turned out to be the brake fluid level warning, the other is still a mystery but I'm assuming for now that it's the power steering pump wiring to the ECU.

Yours is in the wrong place to be an engine sensor: you should have an air temp sensor (ACT) on the right of the plenum chamber (behind all the injector wiring).

Best to be guided by 'what's not working?'

Barkychoc

7,840 posts

137 months

Thursday 8th March
quotequote all
I would have said from where it's located reversing light switch - do they work?

Maffe

444 posts

192 months

Thursday 8th March
quotequote all
I have the same connector hanging loose in my s3c, have not figured out where its supposed to go yetwobble

glenrobbo

11,375 posts

83 months

Thursday 8th March
quotequote all
What are the tracer colours on the wires?

Barkychoc

7,840 posts

137 months

Friday 9th March
quotequote all
DO THE REVERSING LIGHTS WORK?

Griffinr

1,017 posts

107 months

Saturday 10th March
quotequote all
Does the car have a fuel rail temperature sensor fitted? mine didn't and I had a similar spare connector. The temperature sensor screws into the fuel rail towards the rear.

TVRees

835 posts

45 months

Saturday 10th March
quotequote all
Griffinr said:
Does the car have a fuel rail temperature sensor fitted? mine didn't and I had a similar spare connector. The temperature sensor screws into the fuel rail towards the rear.
just for info. - my S2 does have a fuel temp. sensor fitted.


The Horse

Original Poster:

109 posts

87 months

Monday 2nd April
quotequote all
This is a better photo of the lead which isn't connected to anything.
It's a brown with red trace and brown with a blue (?) trace.
It's taped up with the wires to the ignition module (?) that's fixed to the bulkhead in the photo.



If anyone can tell me where it might need to go I'd be grateful.
Thanks
David


Edited by The Horse on Monday 2nd April 21:44

phillpot

14,262 posts

116 months

Monday 2nd April
quotequote all

Thought this might help but not really? .... clicky


I reckon its a pretty safe bet is is something used on a Ford Granada but surplas to requirements on an S scratchchin

GreenV8S

25,981 posts

217 months

Monday 2nd April
quotequote all
The Horse said:
This is a better photo of the lead which isn't connected to anything.
Looks as if there are two conductors there. Do either of them have a connection to ground or power?

zombeh

590 posts

120 months

Tuesday 3rd April
quotequote all
From the colours and looking at the engine wiring diagram for the S2/3 it could be the "octane adjust" plug, if it is then shorting it should advance the timing slightly. The idea being that you could take a car set up for running on proper petrol, disconnect that and run it on what passes for petrol in some other parts of the world.

If that's what it is and the car works fine as is then I'd leave it alone smile It would be connected to pins 23 and 24 on the ECU.