riptide Member 733 Member For: 14y 5m 28d Gender: Male Location: Auckland, New Zealand Posted 09/09/13 09:44 AM Share Posted 09/09/13 09:44 AM I just noticed this the other day in the morning on my way to work.I just had a retune and making conservative 340kw and I thought maybe the alternator stops working under certain loading in the same way the air con stops working under WOT.Any help would be appreciatedMaybe I'm due for a new battery?Cheers, Chris 1 Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/ Share on other sites More sharing options...
BRK Member 361 Member For: 13y 7m 3d Gender: Male Location: Perth Posted 09/09/13 11:49 AM Share Posted 09/09/13 11:49 AM We assume: All major terminals are clean and tight and all earth wires are properly connected to the body and engine. After that1. Check age and condition of battery. If good, then2. Have a load check done on the alternator. If good, then3. Check condition of the drive belt, tensioner system and pulleys. If they are all aged - eg >100,000k's - the belt might be cracked and slipping or has stretched too far for the tensioner to keep the preload on the drive system. If you remove the belt to replace - draw a diagram of the looping system. Looks easy but in the heat of the moment, sometimes it is easy to forget how they go back on.That should do it. Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423121 Share on other sites More sharing options...
Panda Eyes flame magnet Gold Donating Members 5,674 Member For: 17y 2m Gender: Male Location: adelaide hills- 'race air' central Posted 09/09/13 12:01 PM Share Posted 09/09/13 12:01 PM cause they point to the sky during hard acceleration? 4 Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423140 Share on other sites More sharing options...
BenDoCo I'm getten too old for this s**t Bronze Donating Members 4,509 Member For: 12y 3m 9d Gender: Male Location: A big bridge over a river in South Australia Posted 09/09/13 01:25 PM Share Posted 09/09/13 01:25 PM ^^^^this guy knows Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423219 Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 17y 7m 22d Gender: Male Location: Probably above atmospheric pressure Posted 09/09/13 03:29 PM Share Posted 09/09/13 03:29 PM Winner winner chicken dinner! Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423243 Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 7m 24d Gender: Male Location: SE Melbourne Posted 10/09/13 12:36 AM Share Posted 10/09/13 12:36 AM Your coils may be old and worn. Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423349 Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,332 Member For: 19y 9m 23d Gender: Male Location: Perth Posted 10/09/13 01:20 AM Share Posted 10/09/13 01:20 AM They are closing thier eyes cause they are scared 1 Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423374 Share on other sites More sharing options...
BenDoCo I'm getten too old for this s**t Bronze Donating Members 4,509 Member For: 12y 3m 9d Gender: Male Location: A big bridge over a river in South Australia Posted 10/09/13 01:29 AM Share Posted 10/09/13 01:29 AM uuuuummmmmm..........coz when the accelaration is hardthey don't want to see Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423380 Share on other sites More sharing options...
Kimberley Scott www.australianflag.org.au Donating Members 6,763 Member For: 19y 11m 29d Gender: Male Location: Brisbane Posted 10/09/13 08:58 PM Share Posted 10/09/13 08:58 PM My Skoda Superb does it to mate. But only because its that fast it starts to catch the light being emitted. 4 Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423701 Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 17y 1m 15d Gender: Male Location: Adelaide Posted 10/09/13 09:53 PM Share Posted 10/09/13 09:53 PM Oh dear Link to comment https://www.fordxr6turbo.com/forum/topic/86199-why-do-my-headlights-dim-under-hard-acceleration/#findComment-1423720 Share on other sites More sharing options...
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