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Ac not cooling, where to look for leaks?

aggie05 on Tue May 13, 2008 11:31 AM User is offline

Year: 92
Make: ford
Model: ranger
Engine Size: 2.3
Refrigerant Type: 134
Ambient Temp: 78
Country of Origin: United States

Havnt checked low / high pressure reading yet b/c this just happened this morning. I just bought this truck a few weeks ago and converted it over to 134 when charging i noticed the high pressure side hose had a leak so i replace it. Vacuumed and recharged and after a week now the compressor is cycling on and off on and off. I will check the presssure when i get home but where else should i look for leaks?

mk378 on Tue May 13, 2008 1:34 PM User is offline

Do you have still have the original FX-15 compressor (black death machine) or the FS-10?

The springlock connection fittings on Fords are prone to leak.

aggie05 on Tue May 13, 2008 2:32 PM User is offline

Quote
Originally posted by: mk378
Do you have still have the original FX-15 compressor (black death machine) or the FS-10?



The springlock connection fittings on Fords are prone to leak.

I honestly dont know enough about ac compressors to tell you which one i have. Is there a model number on the side or back of the compressor or an easy way to identify which one i have?

When i replaced hose and recharged it was holding a vacuum at ~-28 but today during lunch i vacuumed again and it wouldnt hold at -28 for more then a few mins. I can hear a gurgling type sound coming from the black box on the firewall passenger side. I believe that is the condenser. If the condenser does have a leak how hard is it to replace? IS there an orfice tube somewhere on there that i should change out if i end up replacing the condenser. Also there is a black filter (maybe the drier, im still a noob at ac systems) looking thing that the low pressure and high pressure hooks up to. Should i replace that while im replacing the condenser?

Edited: Tue May 13, 2008 at 2:34 PM by aggie05

aggie05 on Tue May 13, 2008 2:37 PM User is offline

ONe more note auto zone list 2 condensers a Transpo and Visteon the Transpo is ~20 dollars more is it worth it or these brands about the same quality?

mk378 on Tue May 13, 2008 3:27 PM User is offline

The evaporator is inside that box. The condenser is mounted up front, in front of the radiator. A gurgling noise may just be oil moving around in it.

The tank is your accumulator-drier. It needs to be replaced for conversion or major service. If it is steel with an insulating blanket on the outside it is very common for a hole to rust thru it under the insulation.

Sounds like you did the conversion with what we call the "death kit" in a box. You should redo it properly.

Definitely pull your orifice tube and inspect it. It will be at one of the connections between the condenser and evaporator.

Edited: Tue May 13, 2008 at 3:28 PM by mk378

aggie05 on Tue May 13, 2008 4:25 PM User is offline

OKay i will replace the drier today, and yes it was the death box. There is no insulation around it but there could be a small hole somewhere on it. Should i go ahead and get a new orfice tube or just inspect / clean old one? This truck is 16 yrs old and im guessing all original parts. Any steps or advice next to solves this issue would be appreciated. ITs 88 here in texas and humidity is at 80% so its hot and muggy.

aggie05 on Tue May 13, 2008 11:13 PM User is offline

I was inspecting the system and noticed that there is alot of oil/dirt build up on the passenger side of the condensers front face. I will post a picture tomorrow but it looks like there might be a leak somewhere near the top and the oil is draining down the front of the fins. It had r12 previously can someone point me to a write up of steps to take when converting to 134. Ive searched and found a bunch of threads but no steps from start to finish.

Thanks in advance,

Aggie05

TRB on Tue May 13, 2008 11:33 PM User is offlineView users profile

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aggie05 on Wed May 14, 2008 9:53 AM User is offline


Condenser with oil build up
front of condenser

I havnt put in UV dye but dont think i have to after finding this. What do you think?

Edited: Wed May 14, 2008 at 9:59 AM by aggie05

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