Question about 1994 Chevrolet Suburban

1 Answer

Put a new compressor orifice tube drier and an expantion valve evac the system holds 4pounds 134 it does not cycle it runs continually

Posted by on

  • 1 more comment 
  • kyle
    kyle Sep 02, 2010

    Have you put a set of gauges on it? If yes what is your high and low sided reading?

  • Don Spaulding Sep 02, 2010

    yes I had gauges high side was 125 to 150 low side 40

  • Don Spaulding Sep 02, 2010

    yes I did put gauges on the low side was 41 the high side 110



1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 31 Answers

Both sides are to low. High side should be closer to 350psi and low side should be around 65psi. Im thinking you didnt but enough 134a in (should of used around 5.3 cans) or you have a leak that bleeds off at a certain pressure. Get a can of stop leak with leak detector die put that in turn A/C on max drive it for a day or to then in the evning when its starting to get dark take a bright white LED flashlight and inspect all A/C parts if you have a leak the die will luminate allmost glow. Try that and let me no what the results are.

Posted on Sep 03, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a po532/po533 replaced the whole system less evap. Core performed evac it held 29in i recharge the system to one pound fourteen oz and system is cold excellent pressure high and low shut off a half...

There is a lot more to it than that. This is why the service bill is so high. Did you replace the Orifice tube or expansion valve? Did you replace the receiver/dryer? Did you flush the whole system out with solvent? Did you put the oil back in?

The proper steps are:

1. Remove any Freon with a recovery station.
2. Isolate and remove the compressor.
3. Remove and discard the receiver/dryer.
4. Remove and discard the orifice tube/expansion valve.
5. Flush the system with solvent and catch the discharge to check for rust and debris. If any are found, replace the whole system.
6. Replace the orifice tube / expansion valve with new one.
7. Replace the receiver/drier with new one.
8. Replace the oil in the system with fresh oil in the right amount.
9. Connect all compressor fittings on the compressor.
10. vacuum the unit down for at least 4 hours.
11. Recharge the system. Check performance and leaks.

Aug 09, 2014 | Cars & Trucks

1 Answer

2004 Mitsubishi Endeavor. I need to replace the AC compressor. a chunk of the housing blew off while driving. I am looking for some information on how to flush the AC system after a compressor failure,...

when you replace new compressor/you shoud have to flush ACsystemby usingR11 AND needto replase expantion valve .after that you need to vaccuming AC system.also put AC compessor oil and refill 134A gas.

Jul 09, 2011 | 2004 Mitsubishi Endeavor

1 Answer

How much oil needs to be added to a/c system after replacing with new compressor and dryer on 99 Olds Intrigue 3.5L engine?


Feb 21, 2011 | 1999 Oldsmobile Intrigue

1 Answer

Staling when i turn the aircondition on, and there's a loud squeking noise when i turn on ignition

your air condition compressor is locked up. your will need new compressor, acumulator/drier filter, and expansion valve or orifice tube. a/c system needs to be flushed out to remove particles left in the system by failed a/c compressor.

Jan 15, 2011 | Mitsubishi Lancer Cars & Trucks

1 Answer

Ac cycles on 92 blazer ,new compressor,low switch bad?

Did you replace the dryer,and the orifice tube?If the orifice tube was not replaced,this is most likely the problem,what are the pressures while it is running,and how much freon is in the system?If the system does not have enough freon it it,it will do this,but if it does,the cycling ac compressor is because of the orifice tube,if the system was not flushed out,and there was a new orifice tube installed ,then it is stopped up again.Let me know something so I can help.

Jul 14, 2010 | 1998 Chevrolet Blazer

1 Answer

When doing an Evac of the AC system where do you hook up the vacuum pump to the high side or low side fitting. The vehicle has to not be running also, right? I just replaced the AC compressor, the...

any charge port will evac the system
the compressor will not be running
adding oil is not necessary as there is enough in the replacement compressor
run the vacuum pump for a couple of hours and then lock of the system to see it it holds vacuum

May 07, 2017 | 1996 Toyota Tacoma

1 Answer

New car compressor but not that cold

When they changed your compressor they should have changed you expantion valve (or orfice) and your reciever drier,point being when that compressior went bad there will be small parts from the compressor and plug things up expantion valve or the drier that is the filter for your system, thanks and I hope this helps you

Sep 09, 2009 | 2000 Buick LeSabre

2 Answers

What do I need to replace to convert my ac to r134a on a 88 chevy s-10 blazer

need to have the a/c system evacuated and flushed out with the appropriate cleaner.Replace the orifice tube and drier, and purchase a retrofit kit at any parts house. Recharge system with appropriate amount of oil charge and freon. It will take less R134a than it did R12.

Sep 03, 2009 | 2001 Chevrolet Blazer

1 Answer

2006 nissan pathfinder a/c high pressure readings hitting 350 psi after a few minutes,already evac and recharged with exact amount of refrigerant?

ther is a blockage in the lines somehwere. usual suspect is the a/c orifice tube which is like a mini inline filter. Similar to the orifice in function would be a thermal expansion valve. both have small ports(orifice tube is a mini screen) that can become clogged with metal filings from the compressor as it wears and /or the dessicant material comming loose from the dryer bottle. if there is indeed blockage, the a/c lines will need to be flushed, dryer bottle replaced(recommended), a/c compressor replaced, and the orifice tube or expansion valve( whichever is on the vehicle) to be replaced. vaccumed to 28 inches of mercury and the recharged to proper charge.

Jul 18, 2009 | 2006 Nissan Pathfinder

1 Answer

What do I have to do to change the a/c compressor are there any special procedures or can I take the old one off put the new one on and then charge the system with coolant I have a 1996 oldsmobile delta...

if old compressor fail your air condition has to be discharge at dealership or a garage that does ac repair.then the ac lines has to be flushed out before putting on new one. because old one when it fails clutch lock up or compressor fail.small metal particles get in line.stop up orifice will have to replace orifice tube the accumalator .you will need vacuum pump to pump down air conditioner .to get moisture out of will need a manifold gauge set for air tools are would be cheaper to buy compressor - accumulator - orifice tube. take it to a good air conditioner mechanics.let him put parts on and pump down system.then charge it up.because buying tools to get ac going .is going to cost $475.00 thats the vacuum pump can buy a cheaper vacuum pump that works from air from a regular air compressor you pump tires up with.manifold gauge set causes from $100.00 up to $300.00 for a good set.another thing you have to be familiar with working on air conditioners you put too much R-134 in system you will damage compressor or get seriously hurt.

Jul 05, 2009 | 1996 Oldsmobile 88

Not finding what you are looking for?
1994 Chevrolet Suburban Logo

67 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8514 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides