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Probs after converting from R12 to 134-A

Jim33 on Fri August 31, 2007 3:31 AM User is offline

Year: 1986
Make: Ford
Model: Crown Vic

Hello,

This is in regards to a conversion from R12 to 134-A (1986 Ford Crown Victoria)...here's the story.

After reading information on the internet concerning converting an A/C system from R-12 to 134-A, I began realizing that in order to do the job correctly...the entire A/C system must be flushed completely, all hoses changed, the dryer replaced, etc.

Now, I relayed this information about conversions to my brother...the owner of the Crown Vic...but, he refused to listen to anything I had to say. What I know thus far, is that he had a mechanic...wouldn't call this guy an A/C guru...replace the evaporator, the A/C fittings were changed (larger), and I also believe a USED A/C compressor was installed...the original compressor ceased functioning prior to the conversion...someone talked him into ADDING stop leak to the sysytem because they said the evaporator had a leak and it would cure the problem.

Here's what has occurred following the conversion...the first thing he noticed was that the air VENTS in the cabin (this car has 4) no longer were blowing evenly...in other words, the vent 3rd over from the driver was blowing rather strongly, and the other vents were hardly putting out any force of air. He also noticed that when coming to a stop sign, or stop light...the cabin became quite warm...felt colder A/C air coming from the vents when the cars was in motion (40-60 MPH). He also noticed that on a chilly evening (50 degrees Farenheit)...with the SELECTOR set to VENT and the other selector set to the COLDEST setting...that there was warm air coming from the vents rather than cold air.

Can anyone shed any light on what is occurring? With the vents NOT emitting the same amount of air strength & heat being felt on a 50 degree evening (with the selector in VENT mode and the temp selector set to the coldest setting) does this sound like a vacuum issue? Could this mechanic have re-wired something he shouldn't have?

I'd appreciate if someone can assist in these issues...thank you!

Dougflas on Fri August 31, 2007 6:02 AM User is offline

Jack up the radiator cap and run a new car under it. Grins!!! Too many mistakes here. First was using sealer and second was used compressor. Without pressures, we can't begin to help you. One of the most commom problems that arise when stopping at traffic lights is because fan clutches are bad. Stop leak is the worst thing to add to an AC system. I walk away really fast when I come across a vehicle that has magic in a can.

NickD on Fri August 31, 2007 6:42 AM User is offline

Quote
my brother...the owner of the Crown Vic...but, he refused to listen to anything I had to say.

LOL, not sure if your post is about problems with AC systems or your brother, I have three brothers, one is exactly like yours, always not listening to good advice, kind of hard headed, looking for magic in can, gets himself into a mess, then comes to big brother for help. He is already 64 years old, hasn't changed a bit, but I quit working on his messes over thirty years ago. But somehow he manages to get by. Still on friendly terms, he is my brother, but I don't step in anymore nor give him advice, a wall is a better listener.

Also have a wife and eight kids, wife wants to step in when her two kids seem to have problems, tell her to back off and let them ask us for help, if you step in, they will never mature and become self sufficient, nor realize they are making mistakes, unless they are in a position to ask for help. She is finding this is a much better method of dealing with problems. So if your brother is having problems, have him come here with them, if he wants to. You are getting yourself in the middle, and that doesn't make for a good relationship.

hjc149 on Fri August 31, 2007 12:27 PM User is offlineView users profile

Quote
Originally posted by: NickD
Quote
my brother...the owner of the Crown Vic...but, he refused to listen to anything I had to say.



LOL, not sure if your post is about problems with AC systems or your brother, I have three brothers, one is exactly like yours, always not listening to good advice, kind of hard headed, looking for magic in can, gets himself into a mess, then comes to big brother for help. He is already 64 years old, hasn't changed a bit, but I quit working on his messes over thirty years ago. But somehow he manages to get by. Still on friendly terms, he is my brother, but I don't step in anymore nor give him advice, a wall is a better listener.



Also have a wife and eight kids, wife wants to step in when her two kids seem to have problems, tell her to back off and let them ask us for help, if you step in, they will never mature and become self sufficient, nor realize they are making mistakes, unless they are in a position to ask for help. She is finding this is a much better method of dealing with problems. So if your brother is having problems, have him come here with them, if he wants to. You are getting yourself in the middle, and that doesn't make for a good relationship.

Smart man!

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