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D3 - Engine Bay Everything under the bonnet

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  #21  
Old 10th November 2018, 03:17 PM
snapdragon snapdragon is offline
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Right, the rain stopped and I had another look and noticed that burning off the glue revealed a small hole in the crimped flat. I cleaned it out with a few small slow-running drills until it touched the cable and increased drill sized until it matched that of the hole. Now looking into the hole with a torch, it looked shiny silver not copperery colour, so maybe the solder had wicked down. I checked for other holes and there was one 180˚ opposite so did the same with that, it looked silver inside too. I couldn't resist it, but set up everything again and pushed some solder into these holes too for good measure and then I have reconnected, left to cool. started the car, starts fine, and didn't get warm. I could do more testing but weather is terrible and don't want to overthink the whole things so will reassemble between showers and see how it goes longer term.

One of those dremels with a sanding tool would be useful as I am trying to scrape it with a stanley knife.

Attachment 20426

Last edited by snapdragon; 23rd April 2020 at 09:18 AM.
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  #22  
Old 10th November 2018, 10:34 PM
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ivanhoe ivanhoe is offline
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So your diagnosis is a poor mechanical crimped joint?
Interesting, I hope the solder repair cures your problems.
Thanks for the pics. Hoping I never need to do this though.
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  #23  
Old 11th November 2018, 07:41 AM
snapdragon snapdragon is offline
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Yes, it didn't seem loose but obviously something is wrong with it, maybe dissimilar metals with electricity going through has caused contact corrosion (poor choice of plating on connector?).

Now my diagnostic socket no longer works (cannot connect to any module) Unfortunately the wires to it were peeping out and got singed and were stuck together so will need to sort that out today.

To crimp it harder I would need one of these babies...
https://www.youtube.com/watch?v=4r-88796Bls
£1200 for cheapo chinese one and £3500 for a European one
https://www.ebay.co.uk/itm/6-Ton-Bat...r/301834375633

Last edited by snapdragon; 11th November 2018 at 04:59 PM.
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  #24  
Old 29th March 2020, 08:11 PM
jake0366 jake0366 is offline
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Default Snapdragon did you sort the problem?

Hi my D3 is now very slow on a hot start up. Not the battery as that is only 12 months old Varta.
Just trying to find out if the fix you did on the connector next to the pedals, sorted the problem out.
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  #25  
Old 30th March 2020, 03:10 PM
snapdragon snapdragon is offline
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Yes, never again have I had the hot start problem.
Last month I replaced the battery after 6.5 years - it was getting weak this winter. Wow the new Yuasa AGM is much better that the old LION AGM (eurocarparts own brand) ever was. I suspect 5+ years of undercharging took it's toll on the old battery.

This issue also affects the Q7 but the connector is under the plenum cover but is the same design and causes the same issue.
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  #26  
Old 4th April 2020, 10:36 AM
jake0366 jake0366 is offline
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Default Brilliant news


Thanks, guess I now have a job for the weekend
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  #27  
Old 5th April 2020, 09:31 AM
snapdragon snapdragon is offline
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Quote:
Originally Posted by jake0366 View Post

Thanks, guess I now have a job for the weekend
Keep your fire extinguisher handy (CO2 not powder)
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