jenyap

I'm about to evacuate and recharge the ac. What I'd like to do is cap off the rear ac at the firewall where the lines separate between the front and rear. I'm not going to pull the rear evaporator, nor do I want to permanently weld off the rear lines is case I decide to use it at a later date. Does anyone know what size caps could be used on those lines? I'm referring to the connectors at the bottom of the firewall. The car is a 86.5 auto in case that matters.

SeanR

Why would you want to cap it off if you are not removing it?.

jenyap

Because it does not work very well. When it is on I get almost no cold air out the front which leads me to think that the rear expansion valve is toast. Yes, I know that I could replace it, flush the system, replace the rear o rings and hope that nothing leaks ( the valve under the seat sounds like a great candidate for a leak). Why go through the expense of time and money for something I never use when I can just cap it off?
So, does anyone know what size caps I need?

JoeTaylor

Expansion valve $40, o-rings $10 + labor... considering the time you will have to put into the delete, it might just be better to fix the AC.

The problems you have most likely are throughout the AC system anyway, so repairs are inevitable.

blown 87

What Joe says times about a thousand.

jenyap

"Expansion valve $40, o-rings $10 + labor... considering the time you will have to put into the delete, it might just be better to fix the AC"

The time to put the caps on- about 5 minutes.

Ninespub

Joe, Greg & Sean: You may be correct in your statements, but it IS his car and he just asked a simple question. Come on guys, help the fellow out.

SeanR

We are helping him, helping him not devalue his car and making it work as it should. The rear air is the simplest of systems. If it's fixed correctly, he won't have to go back in and re do everything at a later date. The system will be down anyway for the bypass.

blown 87

You keep on thinking you can cap that off in five minutes.

To cap it off, you are going to what, cut the lines and silver solder caps on?

Or are you going to have a plate machined up to take the place of the expansion valve? or just for the soliniod and some how cap up the other line.

Your car to do with as you please, but to do a rear AC delete right you are going to need to change the lines, and most folks recommend pulling the motor to change that line.

Sorry we can not be of more help to you.

Dean_Fuller

When both front and rear is working good you can hang meat in these cars. In a hot area you will enjoy both working AC units very much. I know a lot of folks delete the rear unit and it IS your car. But once its deleted its gone.

blown 87

It may work fine, but I can promise you that if I saw that on a car that came in for a PPI, I would stop right there and call the customer and tell him what I had found and ask him how are we going to know what else on the car has been done half fast?

That is not a good repair, hell, that is not a repair at all.
What it really is, to me any way is that it might just be a bit of a insight into how the PO views on what what is a acceptable repair on the car.
I would value that car higher if the AC just did not work.

That alone would be enough for me to rate the value of a car much lower, cause you just do not know how many other places that they have done to that standard.

Right or wrong, that is the way I see it and will call it.
They saved a couple of hundred bucks and lost a few thousand on what I would value that car at, if not a out right DO NOT BUY.

But WTF do I know?

Carry on.

blown 87

Sorry for the rant, but that is the kind of stuff that just makes my blood boil.

Nicole

Good points, Greg!

They remind me of a guy on a Saab message board, who heard a nasty a rattle from the front of his engine. He suspected it might come from the balance shaft chain. Instead of fixing it (or getting someone to fix it), he decided to delete the chain. Once he was done, he wrote that it didn't fix the rattle...

Similarly, how would you know that capping off the rear AC would fix the weakness of the front?

Vilhuer

If someone is deleting rear AC I'm looking for good condition lines from engine bay Y pieces all the way to rear seats. Have one small line but can take all six parts. Also looking for adjustment ***** and wiring harness parts.

MRXX

I was skeptical about blocking off my rear AC on my suburban after reading here and I found a web site called www.streetrodguys.com www.streetrodguys.com that sells rear ac block kits for many vehicles. They also sell line replacement sets. I blocked off my rear air last year with a kit from them and it was a great solution! Very easy company to deal with and it saved me over $1200 that the garage wanted to charge me to fix something i never use. What a great option and I highly reccomend this. I haven't had any issues or problems since.