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Interesting alfa characteristics

1K views 24 replies 10 participants last post by  THROTTLEMAN 
#1 ·
Do everyones headlights get brighter when you rev your engine when stationary or is it just me?
 
#3 ·
All electrics use engine power, so when you're at really low revs they can struggle a bit. I've noticed this happen before on several cars, but as an occasional thing.
Also, similarly, with my drivers side electric window (which struggles to go up, either it's comign off it's guides or the motor is packing up), it goes up faster if I'm revving the engine.
 
#4 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by benji90:
<strong>Do everyones headlights get brighter when you rev your engine when stationary or is it just me?</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Mine turn less brighter when I open or close my windows! Really! Try it and see for yourself :D
 
#5 ·
Same reason as above Mel, you're sharing the power between more appliances.
 
#7 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>When I had my Mini, it used to stall if it was cold and you used full beam.
:D
The four dinner plate sized spotlights didn't help though.
wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Who would have thought that trying to run the Old Trafford floodlights off a 12 volt battery wouldn't work :confused: :p
 
#9 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>It's just you.
:p
Next!
:D </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Dont be so flippant! :p
 
#10 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by benji90:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>It's just you.
:p
Next!
:D </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Dont be so flippant! :p </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">If it's not about luggage nets, he just doesn't want to know laughing :p
 
#11 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by bazza:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by benji90:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>It's just you.
:p
Next!
:D </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Dont be so flippant! :p </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">If it's not about luggage nets, he just doesn't want to know laughing :p </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Yeah i have noticed that as well!! That or babies but then i cant talk there either!!
Is anyone else as hot as F***, If only our office had air con!! Basically its hotter than a snakes ass in a wagon rot!
 
#12 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by benji90:
<strong>It really is quite a noticable difference. I guess the air con was running at the time so that has gotta make a difference? Right baz? And the stereo was up to about 40?</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Right (although I'm not sure exactly how much difference having the radio loud would make)
I'm not using any fantastic electronics knowledge here (coz I don't have any), but it's common sense if you think about it. Your alternator is using engine power to provide electrical power, the more things you've got switched on, the more of this is drained, the engine provides more power at higher revs. This is also the reason why sometimes switching stuff on makes the revs drop, again, the alternator is draining power. And it's also the reason why having air con on reduces performance.
Someone will probably post in a min and say 'you don't mean power, you mean wattage' or somethign similar, but it doesn't really matter, I'm explaining it in laymans terms, coz they'er the only terms I understand.
 
#14 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong>It is hot. Damn hot.
wink

Answer me this?? On a ten minute trip to pick up a new printer, I saw a Z3, a 206CC, a Spider, and a StreetKa, all with their roofs UP!!!.
:rolleyes:
What's the point??
:confused: </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">haidressers the lot of em! I even saw and elise with its roof up yesterday - I mean AN ELISE!! what IS the world comming to!
 
#15 ·
Porbably didn't want to mess up their hairdo's. :rolleyes:
 
#18 ·
You can actually buy a little gizmo which is configured such that when you floor the throttle it will actually turn off the alternator and draw all electrical power direct from the battery and therefore increase power.
I worked out that even if you have all the electric items on, this would give you less than 1 extra BHP (remembering that Aircon is driven directly from the engine rather than via the alternator)
 
#19 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by Mel Bonkers:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by benji90:
<strong>Do everyones headlights get brighter when you rev your engine when stationary or is it just me?</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Mine turn less brighter when I open or close my windows! Really! Try it and see for yourself :D </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">The same happens when I shift gear in my selespeed.
 
#20 ·
It could be a duff battery (a cell may have failed) or the alternator may have dropped a diode.
Place a multimeter on the battery when the engine is off. The voltage should be ~12v (11.5 to 12.5) DC. Start the engine and monitor the voltage again, it should run at 13.5 to 14.5 VDC. Turn on the main beams, wipers, rear windows heater and air blower. Voltage may drop and pick-up somewhat, but should return to about 13.5V. Rev the engine at a high idle (2-3k RPM) and monitor, it should remain at the previous level.

Post results here for instant diagnosis, abuse, off topic banter, general discussion and maybe even mindblowing technical discussion.

A charge has not been deducted from you account for this service. I thank you.
 
#22 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by selespeed:
<strong>The same happens when I shift gear in my selespeed.</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Happily it's fast enough wink

Btw... I just got one medium light shot. I drive often with them on... :rolleyes:
 
#23 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by Nemesis:
<strong>Anybody seen VinnyPizza156 lately :confused: wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">It's his birthday today!!
:D
 
#24 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by PR:
<strong>I dont think mine has this problem. Mine has got xenons though, dunno if yours has or not?</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Mine are the standard lamps so perhaps its just them!
I dont really car to be honest its just a bit disconcerting!
 
#25 ·
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by RicksAlfas:
<strong> <blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by Nemesis:
<strong>Anybody seen VinnyPizza156 lately :confused: wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">It's his birthday today!!
:D </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Who's MiniPizza156? :confused: wink
 
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