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 Posted: Tue Oct 06, 2015 3:45 pm |
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Joined: Dec 23, 2013
Posts: 41
Trade Rating: 0
Location: Birmingham
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Hey there guys got an urgent problem, brought my mrs a rolland garros a couple months ago as weve got a little one on the way, well now shes here its started having issues, when running and it starts raining it cuts and dies, AA came out and did a repair on the loom by the crank sensor.
Just gone out to it tonight to move it and its been p**sing down all day and still is now and it wont start....... What you guys think? Only happens when it rains and now even when it hasnt moved
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Posted: Tue Oct 06, 2015 4:38 pm |
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Joined: Apr 19, 2015
Posts: 31
Trade Rating: 0
Location: Amsterdam
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Does it just click or does the starter motor turn the engine over?
Does the engine try to fire at all (sputter)?
Is it collecting water under the bonnet near the ECU by any chance? (Just above wiper fluid reservoir fill pipe)
Otherwise I'd inspect the earth strap/battery connectors and check all other connectors for proper fit and cleanliness
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Posted: Fri Oct 09, 2015 8:40 am |
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Joined: Dec 23, 2013
Posts: 41
Trade Rating: 0
Location: Birmingham
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It turns over fine just no go, next day it was sunny and started fine asif no problem whatsoever....
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Posted: Fri Oct 09, 2015 11:26 am |
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Joined: Jun 19, 2010
Posts: 1600
Trade Rating: +4
Location: South Bucks
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Damp or moisture somewhere ...
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| Down to just the 1.4 HDi. Cayman Green 2.0i CC sold. | |
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Posted: Fri Oct 09, 2015 11:38 am |
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Joined: Apr 19, 2015
Posts: 31
Trade Rating: 0
Location: Amsterdam
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Yep, most likely in the ignition side; double check battery and earth strap connections for clean tight fit and connection (poor connection won't produce good enough spark) and check around coil pack for cleanliness and good fit also of all connectors.
Could clean with WD40 and refit with Vaseline
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Posted: Sun Oct 11, 2015 12:29 pm |
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Joined: Dec 23, 2013
Posts: 41
Trade Rating: 0
Location: Birmingham
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Its had a new coil pack and battery side seems fine and same for earth strap, im stumped with this tbh lol
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Posted: Sun Oct 11, 2015 12:56 pm |
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Joined: Apr 19, 2015
Posts: 31
Trade Rating: 0
Location: Amsterdam
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Hmm... Sounds tricky then indeed!
Guess you'll have to grab a plant sprayer and start misting carefully around components with a running engine... (The way old dodgy plug wires and distributors would show faults, either sparking around or engine cutting out)
Try the battery terminals first, then earth strap, then coil pack connector and pack itself and even other connectors I'd say?
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| 2005 LHD black RC (GTi180) | |
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Posted: Sun Oct 11, 2015 12:59 pm |
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Joined: Apr 19, 2015
Posts: 31
Trade Rating: 0
Location: Amsterdam
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Probably best avoid touching anything while wet and engine running though for safety...! 
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| 2005 LHD black RC (GTi180) | |
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Posted: Sun Oct 11, 2015 3:43 pm |
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Joined: Dec 23, 2013
Posts: 41
Trade Rating: 0
Location: Birmingham
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Well aa came out before and diagnosed crank sensor wiring loom as had a couple cuts in outer casing, he fixed it and seemed to work, (had also stopped raining....) i could believe that when it did it when was driving but now its doing it when parked up makes me think the looms not the problem (no water flicking up onto it from road)
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Posted: Sun Oct 11, 2015 4:17 pm |
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Joined: Apr 19, 2015
Posts: 31
Trade Rating: 0
Location: Amsterdam
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Just moisture in the air could cause electrical issues to show up too, especially with the extremely high voltages in ignition systems;
If the symptoms show up in mist but no rain that would help 
If it's not some short or disturbance from water coming in (ECU, rear lights, even aerial etc?) then last idea maybe intake air sensor?
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| 2005 LHD black RC (GTi180) | |
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Posted: Sun Oct 11, 2015 4:56 pm |
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Joined: Dec 23, 2013
Posts: 41
Trade Rating: 0
Location: Birmingham
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It was only happening in heavy rain lol but ill check
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