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1991 Ford P.O.S.


zoie's Avatar
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06-11-04, 02:28 PM   #1  
zoie
1991 Ford P.O.S.

Actually, it's an Escort. Use your imagination about the POS. This is an old beater that has served me well as a work car. Sometimes too well. Seems it will never die (283K mi.). It is a 1.9 4 cyl/5 spd. . I want to charge the A/C. I am well versed in auto mechanics, yet have never performed this simple feat. What equipment do I need to accomplish this task? What coolants can be mixed? Even if I have to have the system evacuated/reclaimed I wish to reinstall the new cooant myself. I have been told that there is a new coolant that is compatable with R12? Is this correct? Pls. advise.

Zoie

 
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06-11-04, 02:34 PM   #2  
You may be well versed as a mechanic but this is one area you shouldn't mess with. It's not coolant, it's refrigerant. The newer refrigerant is R134 and no, it's not compatable with R12. It's not compatable with the oil in the system either. This is a task that can be both dangerous and costly if mistakes are made. I suggest you leave this for a trained technician.

 
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06-11-04, 04:25 PM   #3  
Refrigerant(coolant as you call it)is a very dangerous chemical and can cause blindness,frostbite or death in certain circumstances.Chances are your system is leaking bad(91 Escorts leaked from the factory)and using a refrigerant other than r-12 will leak out much faster than r-12 due to molecular structure and the charge amount compared to r-12.In effect you will need to replace more parts to repair the system than 100 1991 Escorts could be worth in actual value.If you still want to repair this a/c list the refrigerant you plan to use/lose in the process and we may be able to help better.

 
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06-14-04, 08:31 AM   #4  
zoie
Thank you very much for your clarification of the highly technical terms, "coolant" and Refrigerant". Guess this is why the car still overheats after putting freon in the radiator? Yes, the a/c system leaks. Yes, it has always leaked. Yes I have it charged about this time every year and it fizzles about mid-september (sorry about the o-zone). My desire is to gain knowledge, not save money. My current project is a 40 Ford w/drive train from a trashed 02 Linkoln LS(V8) (less rear end), prior to that it was a 56 Nomad, etc., etc.. Have always had someone else do the a/c. Not this time. Will learn how! Escort is just something that is expendable if I error. For what it's worth, I work in an environment that includes, but is not restricted to, liquid nitrogen and dry ice. I have to wear an environmental suit that includes primary and secondary life support systems. I really think that this system will protect me from a can of R134. No, it's not made of kevlar and the faceplate is not bullet proof.....has lights though!! Will buy the equipment to perform the task when I complete this work cycle (12 daze). Perhaps it will contain instructions. In the mean time, perhaps you should rename your site, "hiresomeoneelsetodoityourself.com"

 
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06-14-04, 02:42 PM   #5  
I offered to help you but I guess telling me what refrigerant you are planning to use was to much trouble for you.I even suggested 134a but also warned you it will leak out faster.Some of the other substitutes would be gone overnight.It is also against the law to charge a known leaking system.You will need to find the leaks and flush the old oil from the system and remove the compressor and drain it,then replace the oil with a compatible oil for the refrigerant you choose.Charge amount will vary also depending on the one you pick.So there you go you have some more knowledge about A/C that you didn't have before.

 
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06-14-04, 02:54 PM   #6  
We give you good safety advice, you give us sarcasm.

Your HAZMAT suit isn't going to do a thing for you if you open the wrong valve and that can in your hand explodes.

 
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07-04-04, 06:39 AM   #7  
zoie
1991 Ford P.O.S.

davo/Desi,

davo,

Sorry it has taken so long to respond. Charged the system a few daze ago. It works fine. Bought some R134a-R12 adaptors, oil, stop leak, R134a and charged the system to 85% of the required R12 capacity. There was no R12 remaining in the system and the stop leak seemed to do it's job. I know this wasn't done properly, but this car is not my real concern and you did teach me enough to get me pointed in the right direction. My main problem with the Escort is.. "IT WON"T QUIT RUNNING!!!". I have a late model drive train in an after market frame that I am preping a 40 Ford body for. I've got the math down on the radiator, but am still trying to figure the A/C requirements since that system will have to be scaled down some what due to air flow restrictions, smaller cabin, etc., etc. . Waiting on a Lincoln LS shop manual to complete calclations. Thanx

Desi,

I do apologize for being so crass. I felt that you treated me like an idiot, I am not. By the way, I'm not blind, still have all of my digits, and didn't even use the HMS.

 
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07-04-04, 08:32 AM   #8  
Posted By: zoie Desi,

I do apologize for being so crass. I felt that you treated me like an idiot, I am not. By the way, I'm not blind, still have all of my digits, and didn't even use the HMS.
I appreciate your apology and no, I didn't think you were an idiot but I'm willing to bet that even now your not aware of how easily you could cause that can to explode and just what wrong move would cause that. Your expertise in other area's can give you the wrong kind of confidence in an area that has hazards unknown to you. I know a lot about electrical circuitry in a car but I won't mess with my household electricity. I know I could make a costly mistake. Some things are safe to explore and some aren't, that's all.

 
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