Renault Clio 2 - Loose Wiring Loom Cover Cutting Into ECU Loom*FIXED* - Page 12 - Renault Forums :: Independent Renault forum

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post #56 of 80 (permalink) Old 27th February 2010
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Re: Renault Clio 2 - Loose Wiring Loom Cover Cutting Into ECU Loom*FIXED*

this happens when running i thought maybe relays but unsure,also my cilo is a 53 plate but does not have a black box around ecu where alot of probs have been.it does'nt look as though its ever had one
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post #57 of 80 (permalink) Old 1st April 2010
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Re: Renault Clio 2 - Loose Wiring Loom Cover Cutting Into ECU Loom*FIXED*

My wifes 02 1.2 Expression has just suffered this fault. Having had the coil block replaced last month, when it died 70 miles away from home and the ECU light came on, the recovery man suspected the same fault ie coils and duly brought her home. I asked our mobile mechanic to have a look and almost straight away he discovered the chafed wiring loom to the ECU .
His proposed fix was to remove the black box, cut and solder the affected wires and use heat shrink tubing to insulate the individual wires. This he did, having slit the rubber loom casing to expose a bit more wire to work with. The anti tamper box has been discarded as we reckon it will just cause the same problem if refitted. The repaired wires were tie wrapped together and then coated with silicone grease to stop moisture getting at them. The car coughed and spluttered when started but then settled down and is now running fine. As an added bonus, the outside air temperature sensor which has been reading 40deg C for the last year is now working perfectly!
Not sure if its relevant to previous posters problems, but in the course of our enquiries into this problem, we were warned that the chafed wires may have damaged the ECU . Not so in our case thankfully, but I wonder if this is the cause of other posters continued problems once they had repaired the wiring ?
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post #58 of 80 (permalink) Old 25th May 2010
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Re: Renault Clio 2 - Loose Wiring Loom Cover Cutting Into ECU Loom*FIXED*

Hi all, my first post
Just found this forum whilst searching for Renault Clio forums. My wife has a Clio II 1.2 51 plate, with slow tickover, only 500. Took it to the local Renault dealer for the tickover to be increased, thay told me there was no fault found during the diagnostic check, then told me there was an inconsistent reading from the air flow meter and the fault was traced to the engine wiring loom and quoted 302.68 to replace. My thoughts were "that much to increase the tickover".
After fumbling around the engine, I noticed the little black box at the back of the engine and noticed 2 wires had chafed.
Then started a search on the internet and found this thread, will follow the steps in this thread and let you all know the results in a couple of days.

Great site for info, will be visiting on a regular basis from now
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post #59 of 80 (permalink) Old 4th July 2010
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Re: Renault Clio 2 - Loose Wiring Loom Cover Cutting Into ECU Loom*FIXED*

Quote:
Originally Posted by Davidb9999 View Post
Had so many 'sensor problems' on the clio 16v 1.2, but so far every sensor has tested good.
Now time to replace the loom, anyone know where I can buy one without paying Renault main dealer prices?
(did see a post quoting 46.60 - but can i find it now???)

Please email directly or post here. thanks
after finding the black box protecting the ECU conecter had worn through some of thr wires and insulated theese my fault returned managed to solve this as ths abs problem was just the same again turns out that the ECU conectors where the pins go into the plugs are filled with a silicone after you remove the plugs it leaves a residueon the pins the residue causes shorts when the plug is replaced as the residue gets pushed to the bottom of the pins and hay presto all number of faults appear hope this is of some hlp to all those who have been so frustrated with ECU problems
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post #60 of 80 (permalink) Old 4th September 2010
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Thumbs up Re: Renault Clio 2 - Loose Wiring Loom Cover Cutting Into ECU Loom*FIXED*

hi the cutting out issue at lights and when stopping turned out to be the butterfly flap having dirt build up cleaning it cure the the poublem and also cured the low idle poublem that most clio suffer from u need to undo the front inlet manifold bolts and the 4 top star boltd remove the air filter and unplug the wiring connectors lift off the inlet manifold turn upside down with loom still attached and clean throttle flap job done no cutting out takes about a hour
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clio , cover , cutting , ecu , loom , loomfixed , loose , renault , wiring

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