1989 r1500 burb, 5.7 AC troubles.

[Vbb199]

They both work on the same principles, just different ways of doing it sometimes. I do commercial and industrial A/C as well. There are some things that are different though. I don't usually pull as deep of a vacuum on cars because of the rubber hoses. If they are new then you are fine, but as they get old you can cause them to leak by pulling a deep vacuum (which is measured in microns)

I do always recommend changing out the orifice for the above reason, but they are dirt cheap, so why go through everything else and wimp out on that. The accumulator/ receiver drier is also good to change because it helps keep moisture out of the system and since you don't pull down to a deep vacuum and use nitrogen to dry the system out you will always have moisture in the system.

For pressures, generally speaking I like to see around 30-40 PSI for the low side and the high side will also depend on your outside air temperature. If it is 100 degrees outside then you should be around 150 PSI. Also the low side will drop as the cab gets cooler too...

Here in Phx it isn't unusual to hit 118 degrees so my high side pressure may be around 210 PSI

Ok cool!!!!!

I'll get back with you on some numbers this evening.
It's 2.45pm here. So around 4:30 or so. I'll fire it up and hook the gauge up and give you a outside temperature and both sides pressure readings. Maybe that'll be able to give you some info to direct me.

I think you and @yevgenievich are onto something. Now that I know what I know from you guys, it only blows nice cold AC when I'm driving.
Idling the condition worsens.

My clutch fan is going out.
I failed to mention service engine soon comes on when running the AC after a bit as well.
But I'll post up results after a while.... Give this thread a watch if you will.. I'll get back with you.

 

[Markmx6]

Sent a PM with my phone number because I probably won't be on much longer today.

Also just for ***** and giggles, when it is idling and you have the gauges on it, watch your high side pressure when it is hot and then pour some water on the radiator/condenser and watch how far the pressure drops.

 

[Vbb199]

Sent a PM with my phone number because I probably won't be on much longer today.

Ok great!!!!!

Thank you!!
It'll be from a 704 number

 

[Rusty Nail]

Yeah. Id be quick to run another new one.
Reckon it's clogged and those things are cheep oughta get the rest of that stuff out because you flushed it with one installed, right?

Right.

You must be registered for see images attach

 

[Vbb199]

Yeah. Id be quick to run another new one.
Reckon it's clogged and those things are cheep oughta get the rest of that stuff out because you flushed it with one installed, right?

Right.

You must be registered for see images attach

I did nothing of the sorts, pulled the ****** old orifice out, blew high pressure air thru the lines for a long long time until **** quit coming out of the lines everywhere, then slapped a new orifice tube in.


That probably wasn't correct procedure.

 

[Rusty Nail]

I saw what u did there, thanks.



Ok mr correct procedure. Im tryin to help but I wont make you feel bad after you switch it out again cuz it's all clogged.

Can I get a lol?

Where is that one guy?




Not you Pedo, the guy with the sign!



Gah...fvckin bears man...

xc_hide_links_from_guests_guests_error_hide_media

Yeah, thanks for showin up lolguy

 

[Vbb199]

I saw what u did there, thanks.



Ok mr correct procedure. Im tryin to help but I wont make you feel bad after you switch it out again cuz it's all clogged.

Can I get a lol?

Where is that one guy?




Not you Pedo, the guy with the sign!



Gah...fvckin bears man...

xc_hide_links_from_guests_guests_error_hide_media

Yeah, thanks for showin up lolguy

No no no no rusty.
Im not saying what YOU suggested wasn't correct proceedure.

I'm saying what I did probably wasn't correct.
Or is that what you meant?

I'm confused.

 

[Rusty Nail]

**** man it dont matter. Arent we havin fun?
Y u no making 502 videos?

I seent that pasgetti u had in dere.
Look like a mess.

That ************ gonna catch some air or what?

We want VIDEO. You can stick them picks huh?
502>everything.
Your pix arent good here anymore mr 502.
Level up the empertainement, sun.

V-I-D-E-O

Wheres that other guy?

Aww yeahhh
Stupid grd guy, make way for kool aid

Vbb been drinkin plenty.
502s are expensive AF.

You must be registered for see images attach

I bet it gets madd aire

 

[Vbb199]

Big thanks to @Markmx6 for a telephone call and some info and insight.

The issue is, I went by R12 quantity, (48 oz) instead of just going by outside Temps.

Also, my clutch fan is run down, just like you guys said.

 

[Vbb199]

Just as @yevgenievich said.

 

[Craig 85]

FYI 454 trucks with the tow package and 4.10 gears got this aux pusher fan.

You must be registered for see images attach

 

[Rusty Nail]

You need that in your life yo.
Leave it to Craig!

 

[Vbb199]

FYI 454 trucks with the tow package and 4.10 gears got this aux pusher fan.

You must be registered for see images attach

Weird. I have a factory HD radiator, by its size I believe it to be that of a big block cooler.
Trans cooler, oil cooler, as well as a decent length of power steering line that goes under the radiator I guess to let off heat from that too!

But no cool electric fan!!!!

 

[Rusty Nail]

Hay if it's noisy, ? Aint that why the screen is full if junk?
Man come on.

 

[Vbb199]

Hay if it's noisy, ? Aint that why the screen is full if junk?
Man come on.

How the hell should I know?
I've never heard what a AC pump on squarebody sounds like lol