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Fd idle goes up

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Old May 20, 2013 | 09:58 AM
  #1  
Sebastijanignac's Avatar
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From: Austritt
Fd idle goes up

Hello guys does somebody knows what it could be??


When I turn my lights on my idle goes up
Thought about my alternator but maybe it's something else

Anyone some technical advices please ?
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Old May 20, 2013 | 01:07 PM
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High electrical load is suppose to trigger a higher idle. It's normal. Idle should also rise if you turn your rear window defogger on and/or turn fan blower to high.
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Old May 20, 2013 | 01:23 PM
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From: Austritt
So it's normal that it rise 100-150 rpm
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Old May 20, 2013 | 01:27 PM
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From: Austritt
The idle goes up and down it's never constantly
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Old May 20, 2013 | 04:52 PM
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So which is it?
Because this:
Originally Posted by Sebastijanignac
......When I turn my lights on my idle goes up....
Is not the same as this:
Originally Posted by Sebastijanignac
The idle goes up and down it's never constantly

A loping idle that rises and falls continually, (probably gets worse once warmed up) is usually a result of a vacuum leak in my experience.
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Old May 20, 2013 | 04:58 PM
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From: Austritt
Exactly! Getting worse when i get some temperature!! Gotta check my hoses! Gotta be easy ! Im Driving non seq.
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Old May 20, 2013 | 05:00 PM
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From: Austritt
When the engine is cold and i if I turn the lights on the idle goes up but when it's warm the idle is going crazy
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Old May 20, 2013 | 05:52 PM
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From: florida
Originally Posted by Sebastijanignac
When the engine is cold and i if I turn the lights on the idle goes up but when it's warm the idle is going crazy
Yeah if your idle is rough like that, a vacuum leak is likely
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Old May 22, 2013 | 04:42 AM
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From: Austritt
Yea gotta check it!! Could it be the acv on the plenum?
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