2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

hey i installed a FCD and now the car wont idle less than 2500-3k

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Old Sep 19, 2007 | 07:51 AM
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hey i installed a FCD and now the car wont idle less than 2500-3k

hey i made a homemade FCD and now the car wont idle less than 3k...even when i took off the FCD...i just want to know whats the prob, should i mess with the Idle control ? let me know what u guys would do..thanks
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Old Sep 19, 2007 | 08:50 AM
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search for vacuum leaks
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Old Sep 19, 2007 | 09:44 AM
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vacuum leaks? how would that make it idle higher?
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Old Sep 19, 2007 | 09:49 AM
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really? so it basiclly, and where would i have vaccum leaks at? sorry for stupid questions, but i still consider myself a NEWB
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Old Sep 19, 2007 | 10:00 AM
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Everywhere a vacuum line is. >.< I found that out the hard way too. Heard a whistle for a while and finally I found it after replacing miles and miles of tubing. :P
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Old Sep 19, 2007 | 11:30 AM
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Originally Posted by texFCturboII
vacuum leaks? how would that make it idle higher?
lol.. or do you mean how wouldnt it
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Old Sep 19, 2007 | 11:33 AM
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Yea I get it, more air.
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Old Sep 19, 2007 | 12:06 PM
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usually a vacuum leak does make the motor bog at idle because the vacuum sucks in more air, leaning out the mixture because the ECU doesn't have a clue.
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Old Sep 19, 2007 | 12:40 PM
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Originally Posted by SpeedOfLife
usually a vacuum leak does make the motor bog at idle because the vacuum sucks in more air, leaning out the mixture because the ECU doesn't have a clue.
go pop off a big vacuum line and tell me what happens.
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Old Sep 19, 2007 | 12:49 PM
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Originally Posted by imloggedin
go pop off a big vacuum line and tell me what happens.
done.
nothing, because my car isn't running right now
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Old Sep 19, 2007 | 01:16 PM
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lol
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Old Sep 19, 2007 | 02:36 PM
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check your fuses
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Old Sep 19, 2007 | 03:18 PM
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Home made FCD??

What exactly did your home-brew electronics consist of and where did you install it?

You must have disturbed something because there's no way adding a "voltage clamp" to the pressure sensor would affect idle at all.
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Old Sep 19, 2007 | 04:49 PM
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^^^ it's not hard to put together the paul stoaks fcd, to which i'm assuming "home made" refers to.
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