John.Taylor
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| posted on 19/9/07 at 01:09 PM |
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Shortening Wires to Sierra EEC IV
Having cut out the door looms, ac loom, radio loom, etc. from my 2.0i pinto Sierra loom I have laid down the remaining wiring over my MK Indy in an
attempt to start fitting it.
Due to the Indy being much smaller than the Sierra I will have a lot of excess (heavy) wiring to coil up, and wondered if I could cut the excess
sections out and rejoin the plug to the shorter wires without effecting anything?
I'm particularily interested in cutting down the wiring from the ECU to Electronic Ignition Controller (EEC IV) which could potentially be
reduced from 4m to 20cm.
Other cables that I am concerned about, but could be cut down are the air flow meter, coil, gearbox speed sensor and fuel pump.
Does anyone know if the length of any these wires dictates a function of their operation - ie. if I shorten them will I bugger them up?
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saigonij
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| posted on 19/9/07 at 01:21 PM |
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i dont think that shortening them will bugger them up - distance wise, but there is an aweful lot to cut and resolder - which might introduce the
possibility of the wrong wires being soldered to gether - im not doubting your ability, but if it was me, id leave well alone and just find places to
"hide" the excess wire...
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mookaloid
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| posted on 19/9/07 at 01:27 PM |
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I don't know for certain but I'd be amazed if shortening them had any adverse affect.
The only time I can think of when that could make a difference, is on some old cars - (not a fuel injection sierra) - there was a ballast resisitor
wire, which was used instead of a ballast resistor. Presumably the length of the wire was important in that instance.
If length of regular wire was important then the MSquirt instructions would be much more complicated 
Cheers
Mark
"That thing you're thinking - it wont be that."
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bbwales
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| posted on 19/9/07 at 02:18 PM |
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When I shortened my Sierra loom I put nails into the fence hung the loom up and selected the area for shortening, cut individual wires one at a time
soldered them together and shrink wrapped each cable then wrapped the whole loom in spiral wrap and shrink wrapped the whole thing, I have found no
problems as yet.
Regards
Bob
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nludkin
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| posted on 19/9/07 at 03:20 PM |
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I have seriously shortened the loom from a 2.0 sierra dohc which uses the same ECU and sensors as your setup... Almost 1000 miles on the car and no
problems at all so far.
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Peteff
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| posted on 19/9/07 at 04:06 PM |
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If you shorten the wires the electricity doesn't have as far to travel so the spark will probably be early and throw the timing out.
Only kidding, just chop and rejoin the wires.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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John.Taylor
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| posted on 19/9/07 at 04:17 PM |
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Thanks for the replies, you'll find me in the garage with the snips and solder tonight!
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PaulBuz
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| posted on 19/9/07 at 05:10 PM |
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quote:
Originally posted by Peteff
If you shorten the wires the electricity doesn't have as far to travel so the spark will probably be early and throw the timing out.
Yes, but he could always tie a knot in the wire to slow it down again
ATB
Paul
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