Idle adjustment 4.6.V8 - F150online Forums



Idle adjustment 4.6.V8

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  #1  
Old 04-19-2008, 06:54 PM
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Idle adjustment 4.6.V8

Hi fella's just a quicky
My 97 F150 4.6 idle speed seems to be set high ...the engine seems to settle at around 1000-1100 rpm ....can anyone tell me how so slow it down a bit to a reasonable level?
Also as i'm in the UK where can I source service items filters belts etc.

Are front A bars available for these trucks ?

where would i purchase a sports silencer just to improve the exhaust note a bit.
many thanks
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  #2  
Old 04-19-2008, 09:18 PM
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There is no Idle adjustment. You need to clean or replace the Idle air control or IAC its located behind the throttle body.
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Old 04-20-2008, 07:37 AM
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You should also check all of the rubber hoses for any tears/breaks....unmetered air (vacuum leak) will cause a higher idle as well......
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Old 04-20-2008, 09:05 AM
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Most of the time it is a vaccumn leak, But star by cleaning the IAC. The first flace to check for the vac leak is the pcv tube and its connector at the intake
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Old 04-20-2008, 12:04 PM
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My truck has no vac leaks and it still seams to idle...a little high...close to 900 maybe 1000..
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Old 04-20-2008, 12:09 PM
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Did you clean the IAC?
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Old 04-20-2008, 07:48 PM
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Idle

Thanks fella's for the info i'll have a go at cleaning the IAC and check the hoses and let you know

many thanks fatjap44
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  #8  
Old 04-20-2008, 10:19 PM
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I've clean my IAC like 5 times in under 500 miles! I've even cleaned it two times after the no idle change!

Time for a new one?! Original 1997 one.
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