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99 Civic LX/D16y7 - high idle problem

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Old 12-17-2014, 03:59 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

Stop. Just stop. OP, go read your VIN. It'll be inside your door jam on a sticker. It will also be on a small riveted plate on your dash, easily visible if you stand at your front driver's side tire and look down through your glass. It should start off with 1HGEJ6, 1HGEJ7, 1HGEJ8, or 1HGEM1. Tell us which one it is.

And yes, I actually have that memorized. Of all the things to stick in my brain, it has to be the first digits of a ******* Honda VIN.
Old 12-17-2014, 04:00 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

Hell, if you told us what body style you were working with, that would possibly narrow it down as well. The hatchback was ONLY available in DX/CX.
Old 12-17-2014, 04:45 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

4 door with power windows and no sunroof indicates lx

2 door with cranks windows suggests dx

Pretty sure those are the only options left

Gx/hx off table as they didn't have y7
Old 12-17-2014, 04:56 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

Hold up. If he didn't even know what car he has how do we know he's right about what engine was in it?
Old 12-17-2014, 05:05 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

The issue at hand right now, though, is we aren't even 100% sure that the OP is pulling a Y7. The VIN number should definitively answer that, and barring that, two simple pictures can. One of the engine stamp, and one of the distributor side of the head, and this conversation could be over in a jiffy.
Old 12-17-2014, 07:27 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

if you had a video of whats goin on that would b a big help sounds to me like you either have a vacuum leak or their is a ecu problem reading the idle ... that's crazy tho haven't seen or heard of no crazy **** like that
Old 12-18-2014, 07:46 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

I think OP needs to post up images of engine, OP needs to verify what he has by looking at his registration VIN and matching it with the VIN on the firewall then run a carfax to verify the VIN.
Old 12-18-2014, 08:17 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

he probably has a ex that someone previously installed a y7 but with a y8 intake manifold. what he probably did was use the mainfold from the y7 motor instead of the using the y8 manifold... switch the manifold to the one you previously had on the car i bet that will fix the problem.
Old 12-18-2014, 08:23 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

also injectors. y7 were 190cc and i believe y8 were 240
Old 12-18-2014, 08:46 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

Originally Posted by mojo27
he probably has a ex that someone previously installed a y7 but with a y8 intake manifold. what he probably did was use the mainfold from the y7 motor instead of the using the y8 manifold... switch the manifold to the one you previously had on the car i bet that will fix the problem.
No he has no sun roof so this is not it read the thread thoroughly
Old 12-18-2014, 11:55 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

[QUOTE=92ehatch;50117019]No he has no sun roof so this is not it read the thread thoroughly[/QUOTE

I still say he should switch those parts incase the previous owner changed the injectors and manifold.
Old 12-18-2014, 12:08 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

The OP shouldn't do anything until we can confirm what kind of clusterfuck we're dealing with.

The problem is a massive vacuum leak. That's simple enough to diagnose. It's rev'ing out of control as soon as it's turned on because there's enough air getting in without the throttle body being open, which can only mean a vacuum leak. The cause of that could be a few things, which means the OP needs to poke his head around and find the source of the leak.
Old 12-18-2014, 03:30 PM
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Default re: 99 Civic LX/D16y7 - high idle problem

Could be something as stupid simple as an over tensioned throttle cable
Old 12-19-2014, 11:20 AM
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Default re: 99 Civic LX/D16y7 - high idle problem



Originally Posted by grumblemarc
The VIN would tell you.
So after some looking into I've got an lx
Old 12-19-2014, 11:35 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

I do have the Lx model sorry for all the confusion
Old 12-19-2014, 11:40 AM
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Default re: 99 Civic LX/D16y7 - high idle problem

Thread title corrected.
Old 12-19-2014, 11:41 AM
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Default Re: 99 Civic LX/D16y7

Originally Posted by RonJ@HT
Thread title corrected.
Thanks, that will help. For the record i'm just trying to get it to run, i cant afford to replace a lot of parts atm.
Old 12-19-2014, 11:57 AM
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Default Re: 99 Civic LX/D16y7 - high idle problem

intake leak.
Old 12-19-2014, 11:59 AM
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Default Re: 99 Civic LX/D16y7 - high idle problem

Originally Posted by Humphrizzle
intake leak.
At the manifold?
Old 12-19-2014, 12:05 PM
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Default Re: 99 Civic LX/D16y7 - high idle problem

Originally Posted by Th3thirdwh33l
At the manifold?
At somewhere on the intake manifold, between the throttle body and the valves. Check for vacuum lines that are disconnected.
Old 12-19-2014, 12:16 PM
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Default Re: 99 Civic LX/D16y7 - high idle problem

Originally Posted by NotARacist
At somewhere on the intake manifold, between the throttle body and the valves. Check for vacuum lines that are disconnected.
Everything is connected to the throttle body and intake manifold.
Old 12-19-2014, 12:30 PM
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Default Re: 99 Civic LX/D16y7 - high idle problem

Then you have a vacuum leak coming from somewhere else. This isn't something we can just magically point at for you. You need to get in there and find where the leak is coming from. Get a smoke machine, or find a friend who smokes cigars. Get a nice, big cloud of smoke all around the engine. Start it momentarily, and see where it gets sucked in. There ya go, that's your vacuum leak source.
Old 12-19-2014, 12:41 PM
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Default Re: 99 Civic LX/D16y7 - high idle problem

Originally Posted by NotARacist
Then you have a vacuum leak coming from somewhere else. This isn't something we can just magically point at for you. You need to get in there and find where the leak is coming from. Get a smoke machine, or find a friend who smokes cigars. Get a nice, big cloud of smoke all around the engine. Start it momentarily, and see where it gets sucked in. There ya go, that's your vacuum leak source.
uhh i can try, i don't really have access to a smoke machine, or a cigar smoker.
Old 12-19-2014, 12:50 PM
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Default Re: 99 Civic LX/D16y7 - high idle problem

Then go buy one. You can get them cheap at Spencer's. Either that, or look harder.
Old 12-19-2014, 12:57 PM
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Default Re: 99 Civic LX/D16y7 - high idle problem

cruise control nipple? brake vacoom?


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