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which ECU wire

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Old 07 January 2002, 07:51 PM
  #1  
croxton7
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Thanks Cube :-) - now you have got me really worried ! This whole area of which wire to cut is a bloody nightmare !


Edited to add, live from ciggie lighter, earth from cigie lighter (is likely to be why false reading ?) reading from white wire/silver bands from hole number 5 - closest to the floor ?

Somebody must have the answers ??
Please ?

Cheers
Steve

[Edited by croxton7 - 7/1/2002 7:59:22 PM]
Old 07 February 2002, 12:34 AM
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mrp
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Steve

Definitely something not right. Should be like a mobile disco once the lambda has warmed up. The ecu feed should be the top row, fourth wire from the right (6th hole in the connector block as 2 don't contain wires) which is white/silver. Mine is blue full throttle, orange, green then blue on part throttle and sometimes blue on overrun. From what I understand the reading you are interested in is at full throttle ie showing blue. It does sound as if you have the wrong feed. I originally had a Dawes fitted and removed it. The only difference to the AFR was with the dawes it was showing red on part throttle. Let me know how you get on.

Ground wire connected to negative battery terminal as per the dawes instructions - some people say this doesn't matter but this is what the guy who builds them recommends so I followed his instructions


Martin

[Edited by mrp - 7/2/2002 12:39:25 AM]
Old 25 June 2002, 06:41 PM
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croxton7
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Hi I am trying to find out which wire on my ECU I need to solder/splice when fitting my Dawes AFR. My car is MY96 U.K turbo.

Any help greatly appreciated, can't find details of ecu map anywhere for this year -..... help please.

Otherwise will have to go through firewall and solder on to lamda sensor and reading John Banks theories about corroding wires has put me right off that idea.

Thanks in advance guys/girls.

Steve
Old 25 June 2002, 07:28 PM
  #4  
mrp
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Smile

Steve

I've e-mailed you a diagram and text which you should receive shortly.


Martin
Old 25 June 2002, 07:37 PM
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croxton7
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Excellent cheers Martin !

I owe you one, I have been trying to find that out for over a week !

Thanks again
Steve

PS I'll let you know how I get on :-)
Old 25 June 2002, 09:12 PM
  #6  
cube
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Sorry to hijack the the thread, but I need exactly the same info for an MY97.
All the documentation I can find refers to connectors that are in a 3 or 4 pin high array, but my ECU connector is only 2 pins high
Thanks in advance.

Cube.
Old 25 June 2002, 10:38 PM
  #7  
mrp
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Cube

You should have a copy shortly. I don't know if the ecu on a MY97 is the same as this, I know newer ones have different ecu's and the lambda connection is on a different pin (I've seen posts and pictures for those here - will be easier to find when the search is working). The picture I've sent certainly covers up to MY96, Just be careful that your ecu IS the same as older cars before you connect anything - you don't want to be connecting to the wrong thing and possibly cause expensive damage.


Martin
Old 26 June 2002, 09:10 AM
  #8  
HELLOM8
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Hi Martin,
Could I also get a copy of this, its been like searching for the mysterious city’s of gold.
Cheers.
Ian.
Old 26 June 2002, 07:39 PM
  #9  
mrp
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Ian

Mail with you shortly.

Martin
Old 26 June 2002, 10:05 PM
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Chod
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Could I also have a copy?

Thanks for your help.

Terry
Old 27 June 2002, 10:03 PM
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croxton7
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Good to see I am not the only one struggling with my older ecu :-)


Thanks again Martin
Old 27 June 2002, 10:11 PM
  #12  
mrp
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Wink

Terry

Don't know if you have a copy yet, so one is on the way to you now.

No probs Steve, glad I was able to help.



Martin
Old 27 June 2002, 10:14 PM
  #13  
cube
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Martin,

For future reference m8, my wire is also pin 5 as per MY96, but it is pink.

Thanks again.

Cube.
Old 29 June 2002, 08:36 PM
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DodgeT
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Talking

can i have a copy please, my94 uk turbo.
Old 29 June 2002, 08:43 PM
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FamousCoops
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please please a copy would be most helpful
Old 29 June 2002, 10:49 PM
  #16  
croxton7
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Martin,
thanks alot mate its now working well, slight heart attack when fitting though, the 5th wire in was white with silver lines, as you said ..... BUT after removing insulation tape some 2 inches down wire (to aid connection with AFR wire) I found that the base of the wire was actually grey with vertical white stripes ! and the white with silver rings was actually the inner wire running inside the grey wire .. oh shXX I thought (I must have the wrong wire, nearly put it all back together and said sod it! and to make matters worse, it was also connected to another grey (only) wire which entered the ecu directly below the said white/silver wire. Being as I was already down the root and had connectors/solder at hand took the chance ..... and ha ha it worked. I just wondered if you or anybody else has heard/seen this ..... please let me know its not just me with a funny ecu, or heart attack type wires ?

The light is supposed to shine bright blue ? isn't it :-)

Cheers
Steve
Old 30 June 2002, 07:37 PM
  #17  
mrp
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Steve

I'm not sure what is beyond the silver and white wire as I made my connection to it, very near to the connector going into the ECU (didn't venture any further down the wire. It was also several months ago so I don't remember what other wires would be there (maybe someone reading this could clarify use of the grey and white wire). Yes I get a bright blue light on full throttle and on liftoff. The others flash occasionally on partial throttle before I'm blinded by the blue LED again. Does yours dim at night? I thought they were supposed to but mine stays the same intensity as in daylight (must look like a mobile disco from the outside).

Martin

DodgeT & Famouscoops you should have mail
Old 30 June 2002, 09:05 PM
  #18  
DodgeT
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Question

cheers.
ive wired it as per the doc, but the blue light stays on all the time, even with the ignition switched off?????
Old 30 June 2002, 09:36 PM
  #19  
Marc R
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Martin the dawes AFR does have a light sensitive bit, the black thing on the side but this is to make the leds brighter in direct sunlight so you can still see them, I don't think it supposed to get darker at night. Hope this helps

Marc
Old 30 June 2002, 10:23 PM
  #20  
mrp
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Thanks for that Marc. Mine just seems to have one setting - very bright, which is fine during the day but at night is is quite dazzling. Looks like my only solution will be to reposition it on the dash.


Martin
Old 01 July 2002, 07:27 PM
  #21  
croxton7
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After having fitted for several days, I am now wondering if it is working correctly, as blue stays on enitre time as soon as ignition is on and does not light up any of the other leds, even under full throttle, mind I have not yet fitted Dawes device, so should it really be reading anything other than blue if car is set up right ??

Anybody else got similar ?

Cheers
Steve

Martin - have you got dawes device fitted ? is that why other lights are lighting up ?
Old 01 July 2002, 07:35 PM
  #22  
cube
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No, this is definitely not right.
On mine, the red and orange flicker ocasionally during normal cruise and part throttle driving, sometimes no lights at all.
On WOT all will light rapidly in sucession and the blue then stays on.
You should see the same effect again when lifting off but the blue only lights momentarily.

Check your wiring again.

Cube.
Old 01 July 2002, 07:55 PM
  #23  
DodgeT
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see what i mean, i dont wanna refit mine until i know exactly which wire to fit it to.

surely if someone who has fitted theres & it works, cant you say for example;

if you take the bottom yellow connector block out, it narrows it down to 4 or 5 wires on the top row, what position (hole wise regardless of whether it has a wire or not to account for differences in ecus) & colour. Cant be simpler than that!
+ what my??
+ do you peel the screen back to reveal the inner core?? etc..
Old 01 July 2002, 09:22 PM
  #24  
DodgeT
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you want a job doing................
done it!

this is for a my94 uk turbo;

pull off the bottom of the large yellow connector blocks from the ecu.
looking at the top row of holes/wires, count in six holes (from left or right & you'll end up with the same position), it should be a pinky/white wire with a silver stripe, VOILA!!

Its like blackpool friggin illuminations now, flashes through the colours as you accelerate until hitting blue on full throttle, part throttle seems to get orange, while very light throttle throws up the red, is this normal???

anything like half to full throttle gets the blue every time(running 18psi fully decat)

ps. got it mounted under the a pillar boost gauge, but had to tilt it up, those led's are pretty damn bright!
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