Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
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Right, i noticed tonight, when electrical equipment that uses short bursts of power, ie things with relays, wipers etc, are on in my car they effect the idle????
When my wipers are on and the cars idling, the wipers come down to their rest position and the revs increase by 200-300 rmp, every time, why is this, batters and alternator are fine????/
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myke
Member
Registered: 7th Feb 01
Location: High Wycombe, Buckinghamshire
User status: Offline
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earth points?
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Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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cool............ more revs from some wippers must try this mod.
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L330wnz
Member
Registered: 9th Mar 04
Location: Norwich, Norfolk
User status: Offline
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 woteva next mate
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R Lee
Member
Registered: 15th Aug 03
User status: Offline
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the battery might not be strong enough. give it a whirl with a heavier duty one and see what you think.
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TOMAS
Member
Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
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Yeah, its the unsmooth flow of current from the alt. Obviousley the alt becomes harder to turn with the more current thats sucked. Its the sudden change from being sucked to being free suddenly make the engine easier to turn/rev and will slightly rev higher. I suppose its like being strangled and then suddely being able to breath again.
Although the wipers dont suck that much? I'd say your battery is failing myself. Current should usually come DIRECT from the battery and if none available or cant give it quick enough then it sucks straight from the alt. Im fairly confident a larger battery with larger CCA should see you better.
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3CorsaMeal
Member
Registered: 11th Apr 02
User status: Offline
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mine does it if u press window buttons up and they already up, think its normal
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TOMAS
Member
Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
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It is to a degree but if it gets worse suddenly then it means your cars lacking electrical output - usually battery/alt. Its the same principal as dimming lights with bass lines...
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langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
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my revs go up when i turn the air con on.
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Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
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supposed to with air con on
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Black Corsa SRi
Member
Registered: 25th May 02
Location: ---Stockport---- Drives: Pug 206 Roland Garros
User status: Offline
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they norm go down when aircon on dont they? or at leat they did on my hire car saxo in France!
Greasemonkey i agree with tomas it does happen but if doing it with wipers battery could be on the way out
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corsafreak
Member
Registered: 1st Dec 03
Location: --- NorthEast ---2.0 16v powered
User status: Offline
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undo,clean up and retighten any of the engine to chassis earth points, it could be a bad earth there.
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