Removed A/C need new tune?

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SRrunner
Posts: 32
Joined: Mon Jun 01, 2009 7:47 am
Car: SR20det s13 Fastback

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Hey i just removed ALL of my A/C last night including the pulleys now when i started it this morning it idles at 1800 the when i rev it abit i goes down to 1300 but used to be at about 900 so i was wondering if anyone knows if i need a retune

Thanks


Cone Junky
Posts: 622
Joined: Sun Jan 20, 2008 8:06 am
Car: S13 fastback
BMW e46 328i
Location: San Diego

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It should not effect the idle that much. The decrease in load and drag might change the idle speed a little, but 400-900 rpms seems extreme.

Is this with the A/C button activated? I also removed my A/C and will purposely activate the system to raise idle and turn on the auxillary fan occasionally. That is the only time I noticed an idle change. But then again, the A/C was removed when I completely rebuilt and modified my motor, so I guess I can't really say what the difference should be with only removing the A/C. Either way, it shouldn't be anything a turn of the idle screw can't fix.

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the converted
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Let it warm up and follow the process in the FSM to reset the idle speed.

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SRrunner
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Joined: Mon Jun 01, 2009 7:47 am
Car: SR20det s13 Fastback

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Well i didnt know if i left it active but why would it matter if i removed everything

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SRrunner
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Yea im gonna do that when im done wiring my alarm/sound system so ill let you know tonight how its workin

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Wc240
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if the electrical is still functional, when you press the button it activates the FICV(fast idle control valve) witch raises your idle. removing ac shouldnt affect your idle like that

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SRrunner
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Joined: Mon Jun 01, 2009 7:47 am
Car: SR20det s13 Fastback

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idk if this would make any difference but i just installed the Nissan Quest alternator so i would have more amps

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SRrunner
Posts: 32
Joined: Mon Jun 01, 2009 7:47 am
Car: SR20det s13 Fastback

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Its working great now i tightened up the belts a bit more and let it run for about 15 mins then drove it so it seems to be all fixed love the new alternator aswell


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