idling too high

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win
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Mon Jan 15, 2007 4:41 pm

my car seems to be idling a bit too high its now idling at about 900 rpm when it should be 760 + or - 50rpm according to Haynes manual. i had co adjusted a few months back and also tuned and it was fine but since i adjusted the valve clearances and cleaned out hrottle body its been running a bit high. Its a 325,and my question is can i turn the revs down myself or will the CO need adjusting again?

Cheers

Win
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georob
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Mon Jan 15, 2007 4:50 pm

Sure theres an idle adjustment screw on the tb
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win
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Mon Jan 15, 2007 5:06 pm

Cheers mate, i did see the adjusting screw but i was just making sure it would'nt affect the CO level.

Win
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buster
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Mon Jan 15, 2007 5:08 pm

georob wrote:Sure theres an idle adjustment screw on the tb
do not touch that !!! Its not for idle adjustment.The ICV does that.The threaded bar is just there for a base setting and should never be used for controlling idle speed.Check your tps switch is ok.
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Brianmoooore
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Mon Jan 15, 2007 10:35 pm

DON'T TOUCH THE SCREW!
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georob
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Tue Jan 16, 2007 2:07 pm

Whats that screw for?
Morat
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Tue Jan 16, 2007 2:11 pm

not for touching

Brian has spoken!
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bobafett
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Tue Jan 16, 2007 2:15 pm

georob wrote:Whats that screw for?
It opens a black whole, the world will end and it will be your fault !

DON'T TOUCH IT !
What ?! Drive straight officer......It's an E30 !
It's the Ultimate Drifting Machine.
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eltel
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Tue Jan 16, 2007 3:40 pm

if you've already foolishly 'touched' the screw what will happen and how can i reset it back to what it was??

adjusted it that many times cant remember where it originally was!
Only in the good lord we trust.. In everything else we check!!


1988 325i Tourer, Lowered, Deep Dish Alloys, Obc, Cruise Control, Heated Leather Sport Seats....
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rj
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Thu Jan 18, 2007 1:57 pm

The throttle stop screw is factory set to ensure the throttle butterfly just allows a slight amount of air through the throttle housing. If you have moved it it's not so disasterous. Simply unscrew it until it no longer touches the lever. Then feeling with your fingers against the end of the screw and lever check when it just begins to move the lever. When that is established, give it a further quarter turn and refit the anti tamper cap.

This sets the butterfly at it's minimal position. The ICV then controls the idle speed.

It is then however important to ensure that the throttle position switch is adjusted correctly to the newly adjusted throttle stop screw.
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win
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Thu Jan 18, 2007 5:27 pm

How do you adjust the throttle position switch?
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rj
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Thu Jan 18, 2007 6:31 pm

I've got a pdf file which explains how to check, clean and align it. The file is too large to attach through the forum but I can send it to your email address if you like.
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eltel
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Fri Jan 19, 2007 5:55 pm

please could you send that file to me also...garethearp@fsmail.net.....thankyou
Only in the good lord we trust.. In everything else we check!!


1988 325i Tourer, Lowered, Deep Dish Alloys, Obc, Cruise Control, Heated Leather Sport Seats....
JazzMan
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Fri Jan 19, 2007 8:52 pm

could you send that to me as well please patrick AT msportster.co.uk :D
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