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  #1  
Old June 11th, 2013, 06:56 AM
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Mike
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A/C conversion or general help

My A/C has gone out on my '94 and I am trying to figure out what to do. A reputable A/C mechanic in my area said that he called LR and they wanted $400+ for the compressor and close to that for the high/low switch. I would like to convert the main pieces and wiring to a more standard American car setup. Has anyone here done a retro fit for the A/C? Any parts advice?
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  #2  
Old June 11th, 2013, 07:07 AM
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What compressor do you have?
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Old June 11th, 2013, 12:14 PM
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Sanden SD7H15

I don't mind making a bracket or doing something different, I just want to get away from using Land Rover parts on an A/C system.
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  #4  
Old June 11th, 2013, 12:33 PM
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Loic Fabro
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<vulture mode on>
Any chance I could get the switch round cover(s?) from your current setup? [one is the fan speed, the other is the temperature control switch; can't remember which one, but one of mine broke and I can't seem to find a replacement one]
<vulture mode off>
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  #5  
Old June 11th, 2013, 12:38 PM
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There aren't any "Land Rover" parts on the AC system. There are parts that come in Land Rover bags and boxes, some of which even have Land Rover stickers on them. None were made by Land Rover. Everything on your AC can be obtained for far far less moo lah using locally sourced replacement parts.
Exactly what has "gone out"? AC systems are pretty simple circuits. The compressor is about the only moving part. Is the clutch not clutching? Often the problem is simply low refrigerant, which keeps the pressure switch from activating. Maybe there's a simple fix.
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Old June 11th, 2013, 12:43 PM
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Quote:
Originally Posted by Mpfish82 View Post
Sanden SD7H15

I don't mind making a bracket or doing something different, I just want to get away from using Land Rover parts on an A/C system.
That's about as generic as they come .... not even remotely Land Rover!
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #7  
Old June 11th, 2013, 12:45 PM
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Quote:
Originally Posted by Mpfish82 View Post
My A/C has gone out on my '94 and I am trying to figure out what to do. A reputable A/C mechanic in my area said that he called LR and they wanted $400+ for the compressor and close to that for the high/low switch. I would like to convert the main pieces and wiring to a more standard American car setup. Has anyone here done a retro fit for the A/C? Any parts advice?
a reputable AC mechanic that doesn't know shit about AC systems it would seem ...
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #8  
Old June 11th, 2013, 12:47 PM
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I guess my explanation wasn't quite detailed enough to make a good analysis.
I am being told the compressor is fine and the system has plenty of coolant in it. In fact that was part of the issue when i bought the truck, someone overfilled and thus over pressurized the system. After some tinkering the A/C guy found the high/low switch to be the issue, he rewired it because he felt that the over pressure portion was broken. It worked for about 5 days and then went out again. It blows air, just not cold air. There isn't a leak otherwise I would see coolant on the floor or in the engine compartment. Not sure what to do next.
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  #9  
Old June 11th, 2013, 12:50 PM
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Replace the switch I would think or pony up the $2500 for a new system.
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  #10  
Old June 11th, 2013, 12:52 PM
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It isn't the compressor, which is generic and isn't hard to get as you mention.
However, the two way switch, which Rovers North told me to stay away from because over 50% of deliveries they have received over the past year have been threaded wrong from the factory and could be a waste of time, cost approx $400, which is a major rip off.
Was hoping someone here may have gone through a similar issue and had done a refit that they recommend would work.
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  #11  
Old June 11th, 2013, 12:59 PM
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Quote:
Originally Posted by Mpfish82 View Post
There isn't a leak otherwise I would see coolant on the floor or in the engine compartment. Not sure what to do next.
The coolant has nothing to do with the A/C system. If the A/C system leaks, you need to do a pressure test.

I'm sure you can find the switch much cheaper. Find a part number and Google away. If it is common to RRs and Discoveries, you would be able to pull one at a junk yard.
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  #12  
Old June 11th, 2013, 01:04 PM
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John B.
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Also, I'm sure if your A/C guy was half decent, he could adapt a pressure switch from something else. It is not rocket science.
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  #13  
Old June 11th, 2013, 01:09 PM
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Where is the switch located? Do you have a picture? I have tons of old AC parts. I gave up on AC ...
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  #14  
Old June 11th, 2013, 01:14 PM
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Quote:
Originally Posted by Mpfish82 View Post
I guess my explanation wasn't quite detailed enough to make a good analysis.
I am being told the compressor is fine and the system has plenty of coolant in it. In fact that was part of the issue when i bought the truck, someone overfilled and thus over pressurized the system. After some tinkering the A/C guy found the high/low switch to be the issue, he rewired it because he felt that the over pressure portion was broken. It worked for about 5 days and then went out again. It blows air, just not cold air. There isn't a leak otherwise I would see coolant on the floor or in the engine compartment. Not sure what to do next.
Find a new AC guy.

The systems is filled with gas you wouldn't see any fluid.

The trianry switch is located on the drier and will only allow the compressor to run if their is adequate pressure in the system. A drier is about $30 and a trianry switch not much more ...

Does the ac clutch engage when you turn the AC on?
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #15  
Old June 11th, 2013, 01:29 PM
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Bill Adams
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Bypass the switch if the refrigerant pressure is good. It is merely a safety for the compressor to keep it from running without a good flow of oil. That should get you cooled off again. In the fall you can then get the switch replaced if you want. The system has to be evacuated to replace the switch, so you might as well pony up for a dryer and a recharge.
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  #16  
Old June 11th, 2013, 01:40 PM
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Mike
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Thanks Bill. I just found them searching a bit more and looks like for under $200 I can replace the dryer and the switch. I think that may be the way to go as it will be new parts.
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  #17  
Old June 11th, 2013, 01:51 PM
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Mike
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Do you have a working Drier and Trinary Switch I could buy off of you in that pile of parts? I gave up on A/C for winter, but summers here in FL make you second guess anything that doesn't include A/C.
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