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Cycles on and off

azlincoln79 on Tue June 23, 2009 6:03 PM User is offline

Year: 1999
Make: Ford
Model: F-250
Engine Size: V-10
Refrigerant Type: 134
Ambient Temp: 100
Pressure Low: 80
Pressure High: 250
Country of Origin: United States

Last week the ac just kept getting warmer and warmer on a 30-mile trip. On the way home it was coming out of the vent at 95 degrees. I can hear the compressor kick in for 3 seconds then go off for 4 or 5 seconds. I hooked up the gauges and the low side was at 80 with the compressor not engaged and when the compressor went on it would go down to 65. The high side was at 250 and would go up to 450
before the compressor would go off. The dials never did stay still they were always moving with the cycling of the compressor. Any ideas or suggestions?
Thanks

Chick on Tue June 23, 2009 6:55 PM User is offlineView users profile

With the gages still hooked up, spray a mist of water on the condenser and see if the pressures drop "fast" or if the cycling stops. It appears you're cycling due to high side pressure, meaning either very poor air flow or you have a blockage.. If spraying the condenser doesn't do it, you'll need to recover the refrigerant and check the O tube for debris, that will determine where to go from that point.. Let us know what happens with the water on the condenser.. hope this helps..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

TRB on Tue June 23, 2009 6:56 PM User is offlineView users profile

Anyone been adding refrigerant to the system?

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

azlincoln79 on Tue June 23, 2009 7:02 PM User is offline

Quote
Originally posted by: TRB
Anyone been adding refrigerant to the system?

Not since last year.


I will try the water and see what happens.


Thanks

azlincoln79 on Thu June 25, 2009 3:50 PM User is offline

Okay I finally got back to this truck. When I sprayed water on the condensor the compressor stayed on and the ac started to get cold. There was a lot of bugs clogging up the condensor. Sprayed it off and cleaned it with a brush and it seems to be cooling. the only problem is the high side runs at 400 lbs The low side is about 35.

Chick on Thu June 25, 2009 4:25 PM User is offlineView users profile

You need to check the area between the radiator and condenser, make sure it's clean of bugs and dirt etc. You may also need a new fan clutch. You might also try recovering the refrigerant and recharging into a deep vacuum the system amount. If you do this be sure to pull and check the O tube, it may be getting clogged giving the high side pressures, in which case your compressor may be failing from running with high pressures..... Hope this helps..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

azlincoln79 on Thu June 25, 2009 8:34 PM User is offline

Well when we took it for drive the ac did not work at all. And the water hose is not long enough. So I guess we will recover the freon and check the O tube. How much does a shop charge to remove the freon?

Chick on Thu June 25, 2009 9:09 PM User is offlineView users profile

that all depends on the shop, different areas are different too, when you say it didn't work at all, was the compressor running???

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

azlincoln79 on Thu June 25, 2009 9:20 PM User is offline

You know I dont know I will have to check tommorow.
thanks

azlincoln79 on Fri June 26, 2009 11:52 PM User is offline

Well the compressor was running today and the vent temps were about 80. the outside temp was only 90. The compressor still cycles on and off.

azlincoln79 on Mon June 29, 2009 10:22 PM User is offline

I have not had a chance to look at this but I have a question. The high side port was so hot the other day I had to take the hose off with a rag. Is that normal?

Also Tim is the mesa store still open?
How much to take out all the freon on this truck?
Thanks

Edited: Mon June 29, 2009 at 10:27 PM by azlincoln79

TRB on Mon June 29, 2009 10:32 PM User is offlineView users profile

Quote
Originally posted by: azlincoln79
Also Tim is the mesa store still open?

You must be thinking of someone else as Arizona Mobile Air Inc - ACKits.com has never been located in Mesa. 3601 West Clarendon Ave for over 25 years now.



-------------------------
When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

azlincoln79 on Mon June 29, 2009 11:04 PM User is offline


oops

azlincoln79 on Tue June 30, 2009 8:34 PM User is offline

The high side port was so hot the other day I had to take the hose off with a rag. Is that normal?

azlincoln79 on Thu July 09, 2009 9:16 PM User is offline

I finally pulled the o tube and its completely plugged up the screen is torn. I hope you can see the picture does this mean the compressor is toast



Edited: Thu July 09, 2009 at 9:50 PM by Automotive Air Conditioning Information Moderator

Chick on Thu July 09, 2009 9:38 PM User is offlineView users profile

What you are looking at on the O tube, is the insides of your compressor, you will need a new one, system flush, new accumulator and oil, possibly a new condenser if it doesn't flush well. Check with Ackits.com, as they had a special on FS10 compressors,

1999 Ford truck parts
Ackits.com

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

TRB on Thu July 09, 2009 9:53 PM User is offlineView users profile

That's the Sanden FS10 replacement. If you just mentioned an special on an FS10 compressor the staff really would not know what you are talking about. Heck they probably forgot I mentioned the Sanden FS10's. As bad as that looks, it's a firewall forward replacement in my opinion.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

azlincoln79 on Thu July 09, 2009 10:27 PM User is offline

Does this truck have a parallel flow condenser and would the hoses have to be replaced?

TRB on Thu July 09, 2009 10:35 PM User is offlineView users profile

6mm piccolo, I would replace the hoses or have them rebuilt. Lot's of debris so no reason to risk not doing it right.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

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