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Author Topic: Thermoquad help please  (Read 115 times)
moparbubba
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Thermoquad help please
« on: July 16, 2008, 12:31:13 PM »

I got a thermoquad to put on my 64 Dart. It's a 9234S.On the back of this thing, on the top, there is an electric wire hooked to a small cylinder thingy with a vaccume tube coming off it. My guess is it's a bowl vent with an electric control. This engine doesn't have an egr valve, or charcoal canister. All I have is a PVC valve. Can I just plug the vaccume line and forget about it? Do I hook it to the air cleaner? Do I hook up 12 volts to the wire? HHHHHHHEEEEEEEELLLLLLLPPPPPPPPPPP  \/][ \/][ \/][
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375InStroke
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Re: Thermoquad help please
« Reply #1 on: July 16, 2008, 03:23:17 PM »

I'm sure that's for the charcoal canister purge.
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moparbubba
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Re: Thermoquad help please
« Reply #2 on: July 16, 2008, 03:28:00 PM »

I think you're right. Do you have any idea how to plumb this, to fool the carb to think this car has a canister, or what would happen if I plug it up??? The wire keeps the vent closed until high manifold vaccume opens it to vent into the carb ............I think....
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satellite65
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Re: Thermoquad help please
« Reply #3 on: July 16, 2008, 06:11:22 PM »

I have one of those sitting in my basement (in pieces).  It closes the vent when it is not energized. 12V power opens the vent. Vacuum also opens the vent. Where they are supposed to get hooked up and when they do their thing is beyond me but the FSM for your car should be able to tell you. Might want to try just hooking up the solenoid to Ign. run so it's open whenever the engine is running.
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moparbubba
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Re: Thermoquad help please
« Reply #4 on: July 16, 2008, 06:49:26 PM »

I unscrewed the tube over the rubber seal, and gave it 12 volts at the selenoid. The rubber seal dropped toward the carb base. I hooked 15 in vaccume to the nipple and it did the same thing. When the rubber seal is toward the carb base, is the bowl vented? The fumes would go where??? I'm in a fog.....
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satellite65
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Re: Thermoquad help please
« Reply #5 on: July 16, 2008, 07:21:11 PM »

Let me take a closer look and I'll post back.....................
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satellite65
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Re: Thermoquad help please
« Reply #6 on: July 16, 2008, 08:27:41 PM »

Yes. When the rubber seal is toward the carb base (down) the bowl is open to atmosphere through the metal tube. I would just hook the solenoid to ign. 2 (run) so the bowl is vented whenever the engine is running and not bother with the vacuum line. If in doubt, again, check the FSM to find how these things are actually supposed to work. I'm pretty sure it's just an emission device, not something that we at bbd sign really care to much about. lol
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moparbubba
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Re: Thermoquad help please
« Reply #7 on: July 17, 2008, 12:01:08 AM »

Thanks for your input. I will try that.
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