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

what is this? (x4) and a vacuum line kink.

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Old May 29, 2008 | 09:38 PM
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Question what is this? (x4) and a vacuum line kink.

I found this while replacing my fuel filter:


I think it's a ground wire of some sort, but I don't know what to do with it.

no idea what this is, I've always assumed it's for testing purposes, but just thought I'd ask.


I've always wondered what this goes to. I think it went to the O2 sensor (which I don't have). It's part of a group of four wires; one goes to the BAC and two go to injectors.


I couldn't find this in the Hayne's manual, whatever it is:



While checking the BAC valve, I noticed there was a kink in this vacuum line. It's hard to see because of the angle, but you can sort of see the sides bulge in the picture. Is this a problem? I'm worried it may be restricting air flow. How can I fix it?
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Old May 29, 2008 | 09:48 PM
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1/2: looks like a ground for some aftermarket part
3: air bleed for the clutch fluid
4: O2 sensor wire runs under the UIM, that is probably the wires for the port/splir air solenoids on the ACV.
5: fuel injector resistor pack
6: the BAC only augments idle on startup and when turning, so air flow isn't a real big deal.
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Old May 29, 2008 | 09:59 PM
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First one should be the oil pressure sensor capacitor piece. It grounds out to smooth the pressure signal or something to that extent.
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Old May 29, 2008 | 10:02 PM
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Wow that was quick, thanks.

1/2: looks like a ground for some aftermarket part
Interesting. I'm not aware of any aftermarket parts in that area.

4: O2 sensor wire runs under the UIM, that is probably the wires for the port/splir air solenoids on the ACV.
That doesn't good. I'll check tomorrow.
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Old May 29, 2008 | 10:04 PM
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Originally Posted by Houstonderk
First one should be the oil pressure sensor capacitor piece. It grounds out to smooth the pressure signal or something to that extent.
ok, thanks. I need to find somewhere to attach it. Will any bolt/screw work or does it belong at a specific spot?
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Old May 29, 2008 | 11:30 PM
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Originally Posted by ultrataco
ok, thanks. I need to find somewhere to attach it. Will any bolt/screw work or does it belong at a specific spot?
One of the bolts for the slave cylinder.
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Old May 30, 2008 | 06:29 PM
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Originally Posted by Houstonderk
One of the bolts for the slave cylinder.
Please excuse my ignorance, but what is that and where is it?

edit: nevermind, I found it. The hayne's manual calls it the release cylinder.

Last edited by ultrataco; May 30, 2008 at 06:39 PM.
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Old May 30, 2008 | 07:32 PM
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ok, well that has proven to be impossible. Those bolts aren't moving. Could it go anywhere else?
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Old May 30, 2008 | 08:20 PM
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Its just a 10mm bolt on the lower side of it. Mainly just grounding it should be fine.
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Old May 30, 2008 | 08:38 PM
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I put it on the top bolt/nut of the fuel filter bracket.
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Old May 31, 2008 | 11:55 AM
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Dude..to ground that Capacitor,go on the Driver's side of the car and look between the Engine and the Firewall,around by the Brake booster.You will see the Air Bleed Screw for the Slave cylinder,also ONE of two Bolts that Holds the slave on..Put the Capacitor there.(undo that one bolt,that holds the slave cylinder on, put it on the bolt,tighten bolt).
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Old May 31, 2008 | 09:25 PM
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I know where the bolts are, but with the tools I have it is really hard to access the bolts, which are pretty rusted and won't budge, and the heater coolant hose and oil filter are in the way.
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