1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Checking a solenoid?

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Old Jul 11, 2009 | 02:42 AM
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Checking a solenoid?

How can i check if the solenoid i have connected to the mushroom thing in the carb is working right, so when i turn on the ac the car does not turn off?
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Old Jul 11, 2009 | 02:45 AM
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FL Rats nest vacuum lines.

I removed my rats nest a while back and the carb works great at the low end but when it goes past 3rd gear at 5000rpm it just bogs so, i want to make sure my vacuum lines are correct. Does anyone have anything that could guide me where all the vacuum lines go after the rats nest has been removed and the carb has been stripped? Stock nikki 84 Gs. Thanks for your help
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Old Jul 11, 2009 | 03:17 AM
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the dizzy advance has both leading and trailing connected to a T fitting and going to the second vac port from the left on the carb spacer connect the oil vent to the fuel vent, and everything else is plugged on mine. runs great past 5000 in any gear. well I haven't had 5th that high yet. I'm not trying to get a felony for going over a 100 on the street. maybe try replacing the fuel filter. or check if your teeter totter is connected. I've seen more that are not that ones that are hooked up right.

So my guess its either the vac advance is not hooked up right, or your carb is messed up. or your fuel filter is plugged.
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Old Jul 11, 2009 | 04:10 AM
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ah, you still have your AC. well heres what you do go to http://maz_tutorials.ten15.net/Tutorial_1_print.pdf, and follow directions. part of the rats nest controls the AC. I took my AC out soon as I got the car. It didn't work and was making a unplesant noise. Plus AC robs some power. I blelieve its the white marked solinoid. I'm not sure where to conect it. but it will tell you in that tutarial.-
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Old Jul 11, 2009 | 07:56 AM
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White rear plug on the wiring harness. Doesn't matter which solenoid (they're all the same) just how it's hooked up. The little screw on top of the Throttle opener adjusts the idle speed when AC compressor kicks on. The vacuum line that connects to the throttle opener is a unique one. One end has a very small inside diameter to match the tiny nipple on the TO while the other end is normal size. Normal vacuum line will leak at the TO nipple.



Download and use the table of contents in your FSM
http://wright-here.net/cars/rx7/manuals.html
http://foxed.ca/foxed/index.php?page=rx7manual


Attached Thumbnails Checking a solenoid?-.jpg   Checking a solenoid?-to1.jpg  
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Old Jul 11, 2009 | 11:28 AM
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Originally Posted by jinxed4dub
the dizzy advance has both leading and trailing connected to a T fitting and going to the second vac port from the left on the carb spacer connect the oil vent to the fuel vent, and everything else is plugged on mine. runs great past 5000 in any gear. well I haven't had 5th that high yet. I'm not trying to get a felony for going over a 100 on the street. maybe try replacing the fuel filter. or check if your teeter totter is connected. I've seen more that are not that ones that are hooked up right.

So my guess its either the vac advance is not hooked up right, or your carb is messed up. or your fuel filter is plugged.
Thats how i have it connected, the only thing is that from that same line i a y splitter which goes to the ac solenoid and then to the throttle opener. Will doing that affect performance? If yes where do i connect the solenoid to for the ac? My fuel filter is new both of them in the bottom and the one before getting to the carb. Car is freshly rebuilt, teeter totter is connected, it idles great and has great power in all rpms through 1st and 2nd gear. If my vacuum lines are correct could it be that the exhaust fumes are getting backed up because of my crappy exhaust?
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Old Jul 11, 2009 | 11:33 AM
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Originally Posted by 74RX4
White rear plug on the wiring harness. Doesn't matter which solenoid (they're all the same) just how it's hooked up. The little screw on top of the Throttle opener adjusts the idle speed when AC compressor kicks on. The vacuum line that connects to the throttle opener is a unique one. One end has a very small inside diameter to match the tiny nipple on the TO while the other end is normal size. Normal vacuum line will leak at the TO nipple.
I dont have the white plug because the very smart person that had the car before me just cut all the plugs when he removed the rats nest. What color are the 2 wires so i can connect them and in the picture you showed m e of the engine bay, where does that teed of line that goes to the solenoid, where do both side go?
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Old Jul 11, 2009 | 07:34 PM
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The vacuum line from the TO is teed into the line from my cruise control. The vacuum source is the front nipple on the carb. You can connect a ground wire to the front spade connector on the solenoid. Connect another wire to the rear connector and splice into the Green/black wire that connects to the compressor magnetic clutch (only wire going to the compressor). This will trigger the solenoid when fan clutch kicks on. I don't think it matters which terminal is ground or power, but that's how the stock wires are in the white plug.

Thanks BTW. I just bought a compressor, thinking my problem was a bad compressor. You made me think about it before I tore everything apart. I found my problem to be a bad TO. Replaced it and now it doesn't die randomly when the compressor kicks on.
Attached Thumbnails Checking a solenoid?-to2.jpg  
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Old Jul 11, 2009 | 11:36 PM
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I am going to do that. But ill take some pics of how i have it and if you could let me know if everything is connected in the right place. thanks
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