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Low Side Port for 1981 Ford Granada

tony1963 on Sun January 13, 2008 10:03 PM User is offline

Year: 1981
Make: Ford
Model: Granada
Engine Size: 3.3L
Refrigerant Type: R12
Country of Origin: United States

I have a classic Ford that we purchased just to have around. The AC works, but it is low on refrigerant.

We are going to retrofit the system when the weather gets warmer. Looking under the hood, I don't see a low side port.

Anyone run into this before?

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Grove Automotive Group, Inc.

An Alabama Corporation

TRB on Sun January 13, 2008 10:45 PM User is offlineView users profile

The ones I have serviced. Had the port on the valve attached to the top of the compressor.

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iceman2555 on Mon January 14, 2008 6:41 PM User is offlineView users profile

Not sure..but is the unit that has the low side port on the underside of the TXV housing? Can not remember if this was the low side or the high side port. All can be remembered...it was a true b*%$h to get to....but now that I think more of the subject...seems that was the high side port. Oh heck...all those dead brain cells......

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

newton5 on Sat February 02, 2008 1:14 AM User is offlineView users profile

Oops. I forgot to scroll down after hitting Reply.

I seem to recall that the later (after 1979-ish) Granada Factory systems used a York compressor without the service valves on top. Like iceman, I recall that there was something "different" about them but can't quite remember what. Take a close look at the POA, like on the bottom side. I vaguely remember both ports being tricky to attach the hoses to due to the angle.
If it really is the regular York compressor both ports are on the service valves right on top, like Tim mentioned.

There were a lot of those cars with Dealer add-on systems, at least here in Ohio. The ports were usually inline and easy to find though.

Sorry that wasn't much help.

chris142 on Sat February 09, 2008 12:38 AM User is offline

I just did one of these wednesday! The low side port is on the bottom of the square expansion valve thingy near the firewall.

iceman2555 on Sat February 09, 2008 8:48 PM User is offlineView users profile

Thought that was where the darn thing was....remember it was hard as heck to access on some vehicles.
Did some preventive maintenance on my daughters Honda Civic today....seems moving into some of the old positions.....reaching that certain bolt that is hidden behind the bracket that keeps the 'what ever from contact with the whatchamacallit.....has played havoc on these old bones and muscle. Sure miss the older vehicles.....remember the mid 70's Monte Carlos and other models that one could actually stand beside the vehicle and reach almost all necessary components...not bend one's arm into a position that the Great Creator never designed for it.
Heck, can remember once, had a Monte in the shop for a rad job....which of course....changed into a complete cooling system service. Assigned the job to a particular tech....nicknamed..."Shorty". Anyway....saw the rad removed from the vehicle....got busy with some other details....sitting in my office...looked out over the shop.....there sat the Monte....'Shorty's' tool cart was near the left front fender...but where the heck was 'Shorty'. Since we were a bit behind....and considering my temper in my younger days....when storming out of the office....searching for 'Shorty'.....no where in the shop to be found.....walked by the Monte....and there was "Shorty"...sitting on the rad core support....changing the water pump.....ahhh....for a car that one need not be a contortionists to work on.....!!!!

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

tony1963 on Sun March 02, 2008 4:11 PM User is offline

I did find the low side port, thanks for the help. I had to pull the entire dash to change the heater core and that job is done, thankfully!

While I had to disconnect the AC lines, I did find the port. I installed new O-rings. Recovered all of the R12 and then added it back.

The car will freeze you out but I noticed that the suction line frosts up all the way back to the compressor, and even on the side of the compressor. Also, what's the cylinder that comes out of the expansion valve and is plumbed to the suction line?

Do these frost up like this as normal?

-------------------------
Grove Automotive Group, Inc.

An Alabama Corporation

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