Ac Hoses for 1984 Chevy suburban

[Suburban nation]

Can any one tell me where I can get to Ac hose the goes form the bottom of Condenser to the bottom of the evaporator core with the tee in it to connect the rear Ac hose to it .

 

[919jackass]

no where - check your local carquest i know of several around here in Nc that make ac hoses. they do a great job. i did an serp belt set up on mine everything was easy but the ac. making the hoses took one evening to measure and order fittings ( yes i moved the high and low side fittings to make it easier ) . one other evening to make sure the lines fit and cut the actual hoses. 10 min to crimp fittings on to lines. after that nothing to it done.
call around and see who could make them for you. then drive the truck over there or take the line off.

 

[Suburban nation]

Thanks for the help

 

[Big Ray]

try a salvage yard...?

should be a common enough part.

edit; I'm talking about the all metal line with the "tee"

 

[Suburban nation]

Rear Ac

Got my Ac charged today and nice cold air comes out of front but very little air blowes out of rear Ac . Sound like fan is on high in rear Ac . Any one no what could be wrong with it .

 

[Big Ray]

...are the "squirrel cages on the motor..?

if the motor is turning it should be moving air...I could feel mine from the drivers seat.

drop the plastic housing & take a look around. make sure the fans & ducts are clear and free to rotate...


is the rear unit chilling at all?

 

[Suburban nation]

The rear Ac is working . If I set in the seconded row of seats and hold my hand against the head liner I can fill a little bit of air blowing out . I drop down the plastic cover and the fan are Turing . Don't really see any duck work .

 

[919jackass]

make sure the motor is on high. mine is like 62 from the driver seat i can feel the air with it is on high. check for that cage being loose also.

 

[Big Ray]

I'm not being a smartass here. the rear a/c fan has it's own switch on the dash, big black rocker switch should be to the right of the radio...one side is low, middle is off, other side is high.

also, the rear unit's fan has it's own resistors in the engine bay, on the inboard side of the evaporator box...I wonder if they may be going bad.
there should be a plug with 3 (I think) wires to it.

should look something like this.

 

[Suburban nation]

I just have high and off no low on the rear Ac . The low must be bad in the resistor in the engine bay .

 

[Big Ray]

I just have high and off no low on the rear Ac . The low must be bad in the resistor in the engine bay .

could be...I pulled my rear a/c components from my 86, the resistor was pretty corroded....

whenever I can afford new hoses I'll install it in my 90. It's front only...

 

[Suburban nation]

Does anybody no of a way to Pressure test my Ac systems sow that I can find my leak in it . Charged my system this morning and have all ready lost some of it charge . Put a can of supper Sealer in it when I charged it . The sealer is Supposed to seal Metal and rubber leaks .

 

[Big Ray]

there are uv dye kits available just for that.

IMO, stuff that is supposed to restore seals is a death sentence...they work by softening the seal, which makes all the seals leak....


if it were me, which it kinda is because I'm doing a complete a/c rebuild on my '90, I would get fresh hoses, a parallel flow condenser, and put a Sanden in it if $$ allows...

if not get a NEW compressor, not a REMAN

flush the hell out of it, fix it one time. the slow leak will have you pulling your hair out and cost more than doing it right once.

I've done 2 134a retrofits on my trucks over the years, wish I knew this back then...


what I'm doing with the obsolete lines is cutting the ferrules off, replacing the rubber lines and having them re-crimped.

 

[Big Ray]

here's some leak detectors available from vatozone...

clicky

 

[Suburban nation]

Thanks guys

 

[Big Ray]

...all part of the service

I'll be flushing my evaporator and reinstalling all my ac stuff next weekend...

 

[Suburban nation]

I have a place near me that can make me new Ac lines Does any one steal sale the rear evaporator or is there a way to test the evaporators to make shore they have no leaks .

 

[Big Ray]

the a/c shop should be able to test your system...


If it were me, I'd remove the manifold from the compressor (because it may leak through the compressor), block it off with a good seal , draw it down & see if holds a vacuum.

check the entire system at one time, minus the compressor...

 

[Suburban nation]

That sound like a good ideal . I will replace all the O-rings in the system and then vacuum it down and see if it holds

 

[Big Ray]

be sure to lube the O-rings & threads with PAG oil...