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Topic: dodgy wiring (Read 1415 times) |
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
 
Posts: 246
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dodgy wiring
« on: May 9th, 2016, 3:22pm » |
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When I start my 2.0 16V from cold the revs drop and the engine immediately dies. If I keep the revs up with the accelerator for about a minute, the engine just about stays on although its idling about 250 Rpm.
Having a poke around under the bonnet revealed the wires to the injectors (I think are for this anyway) have rotted and only one is connected. See picture.
Can anyone tell me if the two connections to the plug have different functions? I am assuming if it was like a normal electrical connection with a live and neutral, it would not work at all with one wire off.
What are my options to get it sorted quickly?
Many thanks in advance
Tony
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2355
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Re: dodgy wiring
« Reply #1 on: May 9th, 2016, 7:01pm » |
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I could be wrong but that looks like the connector for the Idle Air Control valve - which might explain the idling problem - with 1 wire broken it isn't working, may also be shorting given the lack of insulation.
I think you can get replacement connectors from a company called Vehicle Wiring Products.
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Sierra XR4i's are great...especially when fitted with 4WD 
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: dodgy wiring
« Reply #2 on: May 9th, 2016, 7:39pm » |
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Hi Mike
You may be right, I dont have a clue .
What I cant understand is, if one wires is off should it not work at all ?
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2355
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Re: dodgy wiring
« Reply #3 on: May 9th, 2016, 9:42pm » |
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on May 9th, 2016, 7:39pm, Pianoman wrote:Hi Mike
You may be right, I dont have a clue .
What I cant understand is, if one wires is off should it not work at all ? |
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My guess is that it isn't working - which is why your engine is having problems with poor idling - assuming that it is indeed the Idle Air control valve ( IAC ).
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Sierra XR4i's are great...especially when fitted with 4WD
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ben24v
Junior Member
I'm a YaBB newbie!
Posts: 63
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Re: dodgy wiring
« Reply #4 on: May 9th, 2016, 10:16pm » |
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It would be a straight forward repair given its location. I recently replaced the plug on my crank sensor. Can you solder?
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GrahamT
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Re: dodgy wiring
« Reply #5 on: May 10th, 2016, 1:04am » |
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No need to solder, just to get it working.
DISCONNECT THE BATTERY FIRST!!
Cut off the connector you have and make a note of the single remaining wire's colour and the position it takes in the connector (take a photo). Cut back the wires on the car as far as you need to to have 2 good wires and strip the ends so that you have about a centimetre of bare copper on each wire.
Take the connector to your local scrap yard and hunt around the fords (or if the yard has become a**l about safety ask them to) until you find the same connector (they are fairly common) and cut it off the car with around 6 inches of wire. (Making sure the wires are securely fixed to the connector of course).
(Like the mix of metric and imperial? lol!)
Alternatively you could try an auto electrician and ask them for the same connector made up with around 6 inches of wire. You could ask him to use the same colour wires that already exist (in the same position!!)
Take your new connector and wires back to the car. Try the connector and make sure it fits the idle air control valve. Take the wire that is in the same position as the single wire of your original connector and bare about a centimetre of the end of that wire. Twist that wire together with the wire in the car that was connected to your old connector, until you cut it off. They may possibly be different colours but that doesn't matter. Tape the bare wire up with PVC tape. Do the same with the other wire and tape that up too.
Hopefully that will get you mobile and then you can drive to your local auto electrician and ask them to solder the 2 wires together for a "proper job"
Good luck,
Graham
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Simmo
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Re: dodgy wiring
« Reply #6 on: May 10th, 2016, 5:53am » |
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That is the IACV as Scorpio Mike says. 
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szinyei
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Posts: 46
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Re: dodgy wiring
« Reply #7 on: May 23rd, 2016, 12:03am » |
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You will have problems with all you connectors. At the end, you end up with the crankshaft position sensor, because that you cannot reach the wire gets hot and cracks (red, red-white) probably because of the high current and resistance.
This is how a properly finished job should look like:
https://www.dropbox.com/s/p5xnncsi8hqg8fz/IMG-20160226-WA0002.jpeg?dl=0
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amigafan2003
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Re: dodgy wiring
« Reply #8 on: May 23rd, 2016, 2:53pm » |
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on May 23rd, 2016, 12:03am, szinyei wrote:You will have problems with all you connectors. At the end, you end up with the crankshaft position sensor, because that you cannot reach the wire gets hot and cracks (red, red-white) probably because of the high current and resistance.
This is how a properly finished job should look like:
https://www.dropbox.com/s/p5xnncsi8hqg8fz/IMG-20160226-WA0002.jpeg?dl=0 |
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That's properly finished? 
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szinyei
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Re: dodgy wiring
« Reply #9 on: May 29th, 2016, 11:20pm » |
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I know what is going on.
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