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Does anyone know what this is??

 
Old 06-25-2018, 08:19 PM
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Default Does anyone know what this is??

This is in my engine bay and Iím not sure what it even is. Itís Mitsubishi but the clip with the item number on it is broken so I canít even look it up. Iím taking my engine apart and I was wondering if I need to put this back. I took a picture of the actual object and the plug that goes into it. Thanks
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Old 06-25-2018, 08:31 PM
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It's a solenoid. Has something to do with fuel pressure on hot starts. If you have the OEM ecu I would keep it.

If you're stand-alone it isn't used.

More info in this thread: https://www.miataturbo.net/megasquir...olenoid-59139/
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Old 06-25-2018, 08:37 PM
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Originally Posted by SpartanSV View Post
It's a solenoid. Has something to do with fuel pressure on hot starts. If you have the OEM ecu I would keep it.

If you're stand-alone it isn't used.

More info in this thread: https://www.miataturbo.net/megasquir...olenoid-59139/
thank you, I have a megasquirt in so Iím just gonna leave it out.
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Old 06-26-2018, 11:59 AM
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EGR vacuum solenoid i believe
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Old 06-26-2018, 02:35 PM
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The vacuum line routing would tell us for sure, but it looks like this guy to me.

https://www.ebay.com/itm/Miatamecca-...ss!57701!US!-1
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Old 06-26-2018, 05:09 PM
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thats an EGR solenoid, you wont need that anymore
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Old 06-26-2018, 05:38 PM
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Originally Posted by andyfloyd View Post
thats an EGR solenoid, you wont need that anymore
It is NOT the egr solenoid.

I just took this pic of the solenoid on my 97. It mounts on the intake manifold and has a vacuum line running to the fuel pressure regulator. Doesn't matter for OP as neither will be used with a stand alone, but I wanted to be clear for anyone seeing this in the future.

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Old 06-26-2018, 05:43 PM
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Originally Posted by SpartanSV View Post
It is NOT the egr solenoid.

I just took this pic of the solenoid on my 97. It mounts on the intake manifold and has a vacuum line running to the fuel pressure regulator. Doesn't matter for OP as neither will be used with a stand alone, but I wanted to be clear for anyone seeing this in the future.

actually it IS the egr solenoid. lol. No really it is, sorry to disappoint you. It sits on the back of the intake manifold right next to the egr valve. The fuel pressure regulator should have one line running to it from the intake manifold.
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Old 06-26-2018, 05:51 PM
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https://www.summitracing.com/parts/r...SABEgLPP_D_BwE

here is a link to an aftermarket dorman EGR solenoid. Its that exact part
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Old 06-26-2018, 06:00 PM
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Originally Posted by SpartanSV View Post
It is NOT the egr solenoid.

I just took this pic of the solenoid on my 97. It mounts on the intake manifold and has a vacuum line running to the fuel pressure regulator. Doesn't matter for OP as neither will be used with a stand alone, but I wanted to be clear for anyone seeing this in the future.
people with NBs and hot restart issues should consider integrating them into the ECU.
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Old 06-26-2018, 06:01 PM
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Originally Posted by andyfloyd View Post
https://www.summitracing.com/parts/r...SABEgLPP_D_BwE

here is a link to an aftermarket dorman EGR solenoid. Its that exact part
Look at the applications for that part. It isn't even for a ******* miata.



Red is the solenoid OP was asking about. His pic is identical to the solenoid in my pic which shows the location on the intake manifold.

Yellow is the location of the egr solenoid(s) on MY 97.



EGR solenoid on my 97.
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Old 06-26-2018, 06:05 PM
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its a 3-way solenoid -- there's like 3 or 4 in the engine bay: fuel pressure reg, egr valve, purge, and VICS/VTCS.

is still not THE egr valve, it's used in conjunction with it.
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Old 06-26-2018, 06:05 PM
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Originally Posted by Braineack View Post
people with NBs and hot restart issues should consider integrating them into the ECU.
Good to know. Info was sparse. Is the idea just to change fuel pressure while cranking?
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Old 06-26-2018, 06:07 PM
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yeah it can keep the fuel pressure higher during cranking if the regulator stays at atmospheric instead of seeing vacuum... that's much assumption at least.
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Old 06-26-2018, 11:54 PM
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Thanks again guys, that has cleared it up. I just swapped in a 99 head on my 94 and trying to just clean up the engine bay a little while putting everything back together. I'll leave it off and see if I have any hot start issues like brain said.

Last edited by GreyMiata; 06-27-2018 at 12:12 AM.
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Old 06-27-2018, 12:02 AM
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Originally Posted by SpartanSV View Post
Look at the applications for that part. It isn't even for a ******* miata.



Red is the solenoid OP was asking about. His pic is identical to the solenoid in my pic which shows the location on the intake manifold.

Yellow is the location of the egr solenoid(s) on MY 97.



EGR solenoid on my 97.
Might want to clean your engine bay it's dirty AF.
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Old 06-27-2018, 12:10 AM
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Originally Posted by andyfloyd View Post
Might want to clean your engine bay it's dirty AF.
It's sanding dust from high build primer friend. Would be pretty silly to hose down the car before I finish it. Thanks for the concern though.
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Old 06-27-2018, 12:22 AM
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Originally Posted by SpartanSV View Post
It's sanding dust from high build primer friend. Would be pretty silly to hose down the car before I finish it. Thanks for the concern though.
No problem buddy, good luck with your build.
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