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how do i turn down idle speed on cossie

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Old 22-04-2011, 10:59 AM
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5tox
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Question how do i turn down idle speed on cossie

as per title...

im idling at 1500 rpm, its a saph cosworth and id like to know if its possible to manually turn it down a little

is it something to do with the grub screw on the bottom of the icv?
Old 22-04-2011, 11:10 AM
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M K
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yeah small screw on the underside of the throttle body, screw in to lower, out to raise,

if its 2wd, remember to tighten the little locknut back up afterwards, if its 4wd theres nothing to tighten after as an o'ring holds it in place

Hope that helps

Thanks
Marc
Old 22-04-2011, 03:16 PM
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5tox
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cheers mate, will have a look at it thisevening
Old 22-04-2011, 06:31 PM
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scoobydooby914
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Just make sure it's not the iscv making it idle too fast. Unplug the iscv when the engine is warm and see if the idle drops off. If it doesn't then it may just need some adjustment or you could have an air leak. If it drops down when you unplug the iscv then something is holding the valve open. Could be a faulty valve or maybe a tps fault
Old 23-04-2011, 04:27 AM
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Glenn_
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I was gonna say it could be the idle speed control valve too. Take it out and give it a good clean. Ive used brake fluid to lubricate mine twice now and its been spot on.
Old 23-04-2011, 06:22 AM
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My mates just had to have his ISCV cleaned due to high idling; did the trick. Out of interest we tried one that i had lying around and it idled silly high, so will be getting that one cleaned as well

Cheers, Chris
Old 23-04-2011, 07:07 AM
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jason_nike
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Thanks guys, must do mine
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