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#1
01-01-2002, 11:49 PM
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erractic idle help. what sensor do you think went bad?
my friends 90 4 speed won't idle straight..it revs up to about 1.5k...and then drops to about 500..revs up..drops...it won't ever stop...what sensor do you think might be bad? i read once upon a time what it prolly was, but i forgot (btw, it is NOT the dizzy that's the problem)
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*'91 civic Si* -Rota Slipstreams -hella audio/video mods -SiR rear seat -Integra console -B18c swap w/hydro tranny conversion soon -SiR front end/fenders/and moldings coming soon 
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#2
01-02-2002, 12:15 AM
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Vacume lines, and vacum pot on the idle control
 My guess is a lose or worn vacum line, or failed vacum idle control pot solonoid thingy. (there are about 10 differnt names for these things, I tried to find one for my car, and the 3 techs at Honda all called them differnt things, then the Honda Parts CD listed them as something else!) Of course the USDM Civics are a little differnt to the JDM ones, so I could be wrong.
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Connecting the Auto Enthusiasts
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#3
01-02-2002, 03:43 AM
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I had a similar problem and changed all the lines - it fixed it although I occasionally get a wobble from 600 to 900 - nowhere near as bad as it was before though.
As per Moppie - this was on a JDM car.
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#4
01-02-2002, 05:34 PM
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do you mean all the vacuum lines?
__________________
*'91 civic Si* -Rota Slipstreams -hella audio/video mods -SiR rear seat -Integra console -B18c swap w/hydro tranny conversion soon -SiR front end/fenders/and moldings coming soon
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#5
01-02-2002, 06:08 PM
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it could just be one shot line causing it, but it is generally easier to just replace them all, you can get the silicon tubing in many colors for like 15 bucks generally
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90- crx si w/ a D16a Vtec and a few goodies, oh and 60k miles on it heh
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#7
01-02-2002, 07:16 PM
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Quote:
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#8
01-03-2002, 03:41 AM
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mess with the idle, thats just what i did w/ my car when it did that. Just get a flathead screwdriver and turn the idle screw to where it will stop doing the fluctuation.
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-1991 Civic Si (Sold) -1990 Accord EX(Sold) -2000 Civic Hatch -1998 Lexus SC300   Click here to see my Shoe!
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#9
01-03-2002, 10:41 AM
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i say to check the Throttle Position Sensor, and your fuel pump.
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Name: Scott Stable Of Cars I have Owned: 1991 Honda CRX 1990 Oldsmobile Cutlass Supreme 2003 Honda Accord 1998 Chrysler Concorde 2007 Honda Civic 1997 Toyota Camry 1995 Saturn SC2 1996 Ford Taurus 1991 GMC Sierra 2002 Daewoo Leganza 1999 Dodge Ram 2007 Honda CR-V 2003 BMW 325i
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#10
01-03-2002, 04:05 PM
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yeah...we're going to change the fuel pump today..he's got a good spare, so might as well. i guess if that doesn't help, we'll do all the vacuum lines too. and maybe that thing moppie was talking about with like 15 different names
if the TPS is bad, how much will a new one run?
__________________
*'91 civic Si* -Rota Slipstreams -hella audio/video mods -SiR rear seat -Integra console -B18c swap w/hydro tranny conversion soon -SiR front end/fenders/and moldings coming soon
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#11
01-03-2002, 09:25 PM
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about 700 from the dealer, no one else can get it, b/c it's part of the throttle body, i'm up the creek on that one, i'll prolly just go to a yard and get one for my dx one of these days
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90- crx si w/ a D16a Vtec and a few goodies, oh and 60k miles on it heh
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