Hello from a Newbie with a Project

Some cars have one wire and some have two? my car has two wires and the workshop manual shows two wires only Renault know what they are doing.

So, two conflicting diagrams.... both from the workshop manuals? I can see this is going to be fun. I've used completely the wrong cylinder nomenclature to label all my wires too. Used the 911 engine layout which is the exact opposite. Will just have to remember this for future

So pedal box on it's way, (Thanks M), new Bosch dist cap and rotor on their way too. I may be brave and pull the carpets today after flushing the radiator etc... fingers crossed.

cockerel .....yes some have the second wire ,earth to pin 9 ecu .Many apalogies .But not on all cars .

cockerel .....yes some have the second wire ,earth to pin 9 ecu .Many apalogies .But not on all cars .

Hey, no probs, I need all the help I can get right now. At least I'm not going crazy and hopefully have found one of the running issues, who knows?

Just sent payment for ROAC membersip so hope to have access to workshop manuals soon...... then my questions will be even more disturbing

Some cars have one wire and some have two?

According to the Wiring diagrams, only the 1986 model year shows the two wire version ...... all the other model years show the one wire version.

[Alpineandy]

Have a look at the sills from the inside of the cabin.

I suppose I will, if I really have too! Too scared of what will be there.

If it's really bad then It makes financial sense to get Clee and his talented neighbour to do them unless you're happy playing with a welder & fibreglass. Someone that doesn't know what they have to do and with time restrictions (like a local garage) could easily cause more issues and cost a lot more.

John my turbo is a 1990 car one of the last ones made so it looks like Renault went back to two wire.The car we are talking about is a 1988 car so it looks like they started then

and then back to one on the 610s .....I dunno now as I've just checked and I have a LHD 85 car with two and that yellow one, G plate, has two too ...go figure .I don't think it would stop it running if the earth to ECU from that one plug was missing .Maybe test at some point if it does .
I've checked the Renix manual and it shows ECU earth to pin 9 on Z7U and also shows similar on the 4 cyl lumps as well

John my turbo is a 1990 car one of the last ones made so it looks like Renault went back to two wire.

Thanks for that Andrew ....... the plot thickens
This is the 1990 model year wiring diagram which I posted for Martin F not so long ago, with the single wire ..... so I don't know where that takes us now.

Have a look at the sills from the inside of the cabin.

I suppose I will, if I really have too! Too scared of what will be there.

If it's really bad then It makes financial sense to get Clee and his talented neighbour to do them unless you're happy playing with a welder & fibreglass. Someone that doesn't know what they have to do and with time restrictions (like a local garage) could easily cause more issues and cost a lot more.

I figure some of the RATS magic might be in the future of this car. Already checked the google maps and the round trip from here just fits within the 250 mile allowance per day from the transporter rental company .

I'd get real satisfaction from making a little progress myself before handing over to the pros though.engine running, decent brakes and working pedals is my modest aim.

Any practical tips on the best way to repair this broken wire into the plug? I can't see a way to dismantle the plug to re crimp the broken earth wire. The signal wire is not looking too clever either. If it was a wire to wire repair, I'd know what to do, but in this case, the break is right inside the plug. Are these connectors still available? Is there a Heath Robinson solution that anyone has had success with? Cheers.

ImageUploadedByTapatalk1429872234.677032.jpg

Yes those type of connectors are still available I think. I might have a spare one from when I was dabbling with the CO pot fudge (didn't work). I can look at the weekend...

Thank Darren. Do those plugs need a special tool or something?

Do those plugs need a special tool or something?

You really need one of these to make it easy



..... but, there is a problem with your connector. When you insert the tool in order to press back the two barbs on the pin, you really have to hold the wire, not the casing, this allows the casing to move out of the way when the pins are being pressed down as there is a small lip in the casing which the barbs have to get past which stops the barbs from collapsing. under normal usage. Even if you get the barbs pressed down normally you just have to pull on the wire to extract the pin. This is going to be difficult in your case. However you might be able to botch something in order to extract the pin. Over to you.
If Darren can come up with a complete casing and pins, the best way to do this is to cut the wires close to the old casing and refit the wires to a complete new casing.
But I do wonder if all this is necessary as that broken wire, according to your earlier post, does no go to the ECU plug like the other cars do, so you are just connecting it to a random earth. It seems that a number of cars do not have that wire fitted but work with no problem as there is already an earth going to the other connector which appears to be sufficient for normal working of that unit. I would be inclined to forget it if the engine runs quite happily without it. Someone may have fitted it as an afterthought because some other cars do have that extra earth coming from the ECU.

John

Great info, thanks JohnC. I didn't even know of the existence of "Terminal connector de-mounting tools"..... learn something new everyday

Right prepare to be confused.

I think this is the sort of plug you're looking for (my spare one, suitably tweaked from when I was dabbling with the Co pot)

1.jpg

Bit covered in dust but it's been sitting on the shelf.

However I thought this was the case, but didn't say at the time as I wanted to confirm my suspicions.... Take a look at my coil pack and wiring below.

The same wire you're seeing as split off at the plug is indeed attached on mine but is just a 10cm trailing wire not connected to anything. (I've bent it over in the picture so it's more visible). Usually that wire is just tucked behind the coil pack so unless you pull it out then you don't see that it's not attached to anything.

Mine's an 88 F plate (89 model year) so some of the cars that might look like they have both wires are again leading to no-where.

JohnC - any thoughts? Mine's always been like this from day one of ownership.