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High side access port adapter

kevinkr on Sat June 12, 2010 1:31 PM User is offline

I'm adding an electric radiator fans to my 1997 S-10. I am looking for an adapter that will let me add another port without opening the sytem, so I can add a binary switch. Anyone know where I can get one?

CCWKen on Wed June 16, 2010 12:29 AM User is offlineView users profile

Are you talking about something that will attach to the service port? Have not seen anything like that. It would probably leak after a while. Why not just use a temperature switch (and relay) off the engine? Most likely, there's lots of places to put a temp switch.

Ken Kopsky

Custom Car Works
"Rules are for the guidance of wise men and the obedience of fools."

bohica2xo on Wed June 16, 2010 12:55 AM User is offline

Use a relay, and the compressor clutch circuit. If the compressor is running, the fans should be turning...

"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

Buick8 on Wed June 16, 2010 10:43 AM User is offline

Just to turn the fans on, if you did not want to have them on when the compressor is running, which is the easiest way but probably unnecessary ar highway speed, you might try a temperature sensor attached to the condenser inlet tubing on the outside so that it picks up the temp good. You can make sure it makes good contact then wrap it with insulation. The setpoint temp when the fans come on would be important to having them do the most good. Just one suggestion.
Unless there is a port with a valve behind it so it can be isolated from the system, already in place, your best course of action is to discharge the system and install what you want. It's not that hard. Get a shop to catch the gas, install what you need, then get them to recharge it.
We can attach fittings to the gas pipeline while under pressure, so it can be done, the cost and effort are just not justified in the case of an air conditioning system in a car.

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