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What's the red wire on the bottom of the intake manifold?


 
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chadvickers
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Joined: 07 Jul 2005

PostPosted: Sun Jul 31, 2005 5:33 pm    Post subject: What's the red wire on the bottom of the intake manifold? Reply with quote

Quite awhile ago, I seperated the carburetor/intake manifold from the engine in my '87 Wrangler 4.2L. Anyways, I'm looking at the intake manifold now and there's a red wire coming out of the bottom of it with a white plug on the end. It's right below the EGR valve. Does anyone know what this is/where it goes?

I can't find anything in either my Haynes or Chilton manual, but I'm guess it's EGR related...

Thanks,

Chad
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95sahara
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Joined: 08 Oct 2004
Location: Kittanning, PA

PostPosted: Sun Jul 31, 2005 6:30 pm    Post subject: Reply with quote

It wouldn't be EGR related, the only thing going to the EGR valve would be a vacuum line. If it's single wire it could be from a knock sensor possibly? I'm not really sure.
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06 Rubicon
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chadvickers
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Joined: 07 Jul 2005

PostPosted: Sun Jul 31, 2005 7:53 pm    Post subject: Reply with quote

The wire isn't that long, so I'm thinking it connects to the carburetor somewhere. I've got a new carb minus the stepper motor as I ripped out the computer and am getting rid of all traces of emission control.

I'll probably just remove the wire and what it's attached to and make a plate to cover the hole just like where the EGR valve went... Smile

Chad
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95sahara
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Joined: 08 Oct 2004
Location: Kittanning, PA

PostPosted: Mon Aug 01, 2005 4:06 am    Post subject: Reply with quote

Thats probably what it was from, either the electronic fuel metering, or the electric choke, or did you still use that.
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Warn rear bumper/carrier, Xenon flat fender flares, Warn 9.5Ti winch
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chadvickers
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Joined: 07 Jul 2005

PostPosted: Mon Aug 01, 2005 9:30 am    Post subject: Reply with quote

My new carburetor does have electric choke. Maybe I will need it???

Chad
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95sahara
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Joined: 08 Oct 2004
Location: Kittanning, PA

PostPosted: Mon Aug 01, 2005 5:48 pm    Post subject: Reply with quote

Do you have anything hooked to the new electric choke? If not, that could be the wire. I'm not quite sure how it works, it will probably apply voltage to the choke when you first start up. But I'm not sure, everything I have that is carbureted has mechanical choke, with the bi-metal spring inside. So maybe someone with more knowledge on this could chime in.
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06 Rubicon
4" RC sus. lift, 1" PA BL
Warn rear bumper/carrier, Xenon flat fender flares, Warn 9.5Ti winch
PICS
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chadvickers
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Joined: 07 Jul 2005

PostPosted: Mon Aug 01, 2005 6:03 pm    Post subject: Reply with quote

I haven't got that far yet. I'm in the process of cleaning up the intake and designing a cover plate to replace the EGR Valve. I was going to remove the plate that this red wire connects to, but I'm not sure if I should.

Chad
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