Question about 1998 GMC Savana

1 Answer

Trying to recharge but reading in red on canister port (low side?)

High pressure reading on low side a/c

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 6,982 Answers

Likely you have a valving problem or obstruction within the system. To do any real a/c work, you need a Set of gauges so you can monitor both high and low side pressures. Additionally you need an evacuation pump in order to remove any air and moisture in there, neither of which are good. You also need some experience doing this kind of work. Third, I have recently spoken to an a/c guy I know and he told me that the sealers they put in many of those cans will gum up and destroy the expensive machine used by most shops that do this kind of work...making me wonder what it does to the car's system itself??? A short burst of freon without sealers or dyes is OK to add to a system that is just a little warmer than it should be, but otherwise either get the correct tools and some training, or leave this work to the pros.

Posted on May 23, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
the service is completely free 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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How and where to add freon to a1995 sedan deville


Verify ambient temperature is above 65 degrees F.

1. Safety> - safety glasses, long sleeves and gloves, (exposure to refrigerant can cause frostbite).

2. Attach hoses to manifold> assembly, (hi, lo, and fill).

3. Remove caps from service ports, (Low press. Larger tube from evaporator to accumulator - passenger side over fender well; High Pressure - smaller tube from evaporator along firewall towards driver's side). Verify service> ports are clean.

4. Attach low press. and high press hoses to proper service ports.

5. Start car>, reset low refrig code, and turn ac on high and fan on high.

6. Read gauges and compare with chart provided with gauge set.

7. If low and high press readings are both low, then system needs recharge.

8. To recharge, attach fill hose to can of R134a and slowly open low press valve>, (NOT HIGH PRESS VALVE), until low press side reads 40 psi.

9. When flow stops and pressures stabilize close valves> and disconnect manifold from service ports and refrigerant can. Replace service port caps.

Aug 19, 2015 | 1995 Cadillac DeVille

2 Answers

Where is the ac Low port 2007 ford edge?


The low pressure port is either on the black oblong canister or very close to it. Automakers usually put the high pressure side closer to the radiator. The ports are different sizes so the refill connections should not fit each other, making it harder to connect the wrong port.

Jul 28, 2014 | Ford Edge Cars & Trucks

3 Answers

WHERE DO YOU PUT FREON IN A 1999 DODGE RAM VAN


Along the condensor lines, you will find 2 ports that should have screwed on black caps, you will then remove the cap. Dependant on the year, you may need to upgrade the system R-12, vs R-134a; and recharge kits are available at various locations depending where you live. Also, the AC system is charged based on pounds, so be extra careful when attempting a new charge. Some vehicles only require 2 lbs.

Aug 26, 2011 | Chrysler 300 Cars & Trucks

1 Answer

My 2005 Chrysler Town & Country 3.8 Liter AC is not blowing cold air. I would like to try recharging with one of the R-134 kits. Is the low pressure port that I would need to attach the R-134 canister...


the hose fitting that you attach to the low side port will only fit that port-it cannot fit the high side (that port is too big) so you cannot do this wrong. The low (suction) side is between the compressor and the evaporator (passenger compartment, usually in the heater core plenium.)

Jul 05, 2011 | Chrysler Town & Country Cars & Trucks

1 Answer

Where do i put the R-134a in on a 2002 volvo s60


On the low pressure valve located between the compressor and accumulator. The low pressure port has a black or blue cap covering the recharge valve. Don't worry, you can't connect the hose to any other valve port but the low side, the hose end is different from the high side. The high side has a red cap, and is not a recharge port.

Aug 22, 2010 | 2002 Volvo S60

1 Answer

Trying to recharge my A/C in chevy tahoe 2000 cant find the valve where i need to attach to.


The low pressure side port is located somewhere on the 'thicker' plumbing vs. the 'thinner' plumbing coming off of the compressor.

The pressure should be 25psi to 45 psi when the compressor is running.

You can't connect the low pressure hose with a can of r134a on the wrong side (high side vs. low side) because the ports are a different diameter (size).

It may be on the accumulator as well, the canister looking part of the a/c plumbing.

Aug 19, 2010 | 2000 Chevrolet Tahoe

1 Answer

Need to fill air where is low pressure intake


The a/c has a low pressure port on the low pressure side of the a/c piping system.

One can identify the low side by looking at the 'thicker' pipes vs. the 'thinner' pipes on the high pressure side.

There may be a canister that has a low pressure port on it on the passenger side. Or else, it's on the thicker piping itself.

There may be a blue or black cap on the port.

The pressure should read 35psi to 45 psi on the low side when the a/c clutch is spinning or engaged.

When the a/c clutch is not spinning or engaged then the pressure should read 75 psi to 100 psi on a hot day.

Aug 06, 2010 | 1997 Pontiac Grand Am

2 Answers

How to recharge recharge airconditioner


Hi, determine if your car uses R134 or R12 refrigerant. You will notice screw type connectors on the both the High Pressure Side and Low Pressure Side lines in models using R12 refrigerant. R134 compatible models have quick connect valves on both sides. Models made before 1995 may use the old R12 refrigerant. If this is the case, you must have your Chrysler's air conditioning system retrofitted to use R134 refrigerant. Mixing R12 and R134 refrigerants is dangerous and may cause damage to your vehicle. Check your air conditioning system pressure using an automotive air conditioning pressure gauge. Keep in mind that in order to get an accurate reading, the air conditioner has be turned on the coldest setting with maximum blowing power. Remove the Low Pressure Side port valve cap and set it aside. The location of the port varies, but it is usually in front of the engine block. Attach the refill hose to the port on the Low Pressure Side of the air conditioning system. The Low Pressure Side port is smaller the High Pressure Side port. Because the ports are different sizes, the refill kit hose should fit only on the Low Pressure Side port. Additionally, the High Pressure Side port will usually have a red cap or be marked with an H or the word High Allow the air conditioner to **** the refrigerant out of the can by slowly turning the valve on the refill kit hose. Pay attention to the way you hold the can. Most kits will have you hold the can upright when you recharge the air conditioning system. It may take as long as 10 minutes to empty a single can. Turn the valve to the off position and remove the refill hose from the port. Recap the port before closing the hood. Let the air conditioner stay on for at least 30 minutes. This allows the refrigerant to move throughout the entire system.
Take care

Aug 03, 2010 | 2006 Chrysler Town & Country

1 Answer

Need air cindition recharge, don't have cash to take it someplace, can you help with instructions to do this


YOU NEED A R-134 GAUGE SET TO CHECK LOW PRESSURE SIDE AND HIGH PRESSURE SIDE.YOU ALSO CAN BUY A LITTLE CHEAPER GAUGE TO CHECK YOUR AC LOW BLUE SIDE AND HIGH RED SIDE AT ANY AUTO ZONE OR ADVANCE AUTO PARTS.WHAT YOU DO WHEN YOU GET YOUR GAUGE SET HOOK GAUGE TO LOW PRESSURE SIDE BLUE CAP PORT AND GAUGE TO HIGH SIDE PRESSURE RED CAP PORT.YOU CRANK CAR UP GET IT OPERATING TEMPERATURE.THEN TURN AC ON HIGH COOL LET RUN 3 TO 4 MINUTES.CHECK LOW SIDE GAUGE READING SHOULD BE 28 - 32 PSI. HIGH PRESSURE SIDE GAUGE SHOULD 199 - 228 PSI. THATS NORMAL CHARGE. SEE YOU CANT JUST RECHARGE AC SYSTEM UNTIL YOU CHECK IT FIRST YOU WILL DAMAGE SYSTEM .NOW YOU CAN GO TO AUTO ZONE PARTS BUY A CHARGE CAN WITH GAUGE AND HOSE.ATTACH TO IT.YOU NEED MORE THAN ONE CAN.WARNING MAKE COMPRESSOR IS RUNNING WHEN YOU TURN ON AC .BECAUSE IF COMPRESSOR NOT RUNNING CHECK FUSE AND AC COMPRESSOR RELAY.IF BOTH OKAY.YOU COULD HAVE OPEN CLUTCH COIL A FAULTY LOW PRESSURE SWITCH WILL CAUSE AC NOT TO WORK. IF LOW PRESSURE GAUGE BLUE SIDE PRESSURE IS 28 OR 30 YOU DONT NEED A CHARGE.PROBLEM SOME WHERE ELSE.BE SURE TO WEAR SAFETY GLASSES WHEN WORKING ON AC SYSTEM.

Jun 26, 2010 | 2004 Hyundai Elantra

4 Answers

Where do I recharge ac at


there are 2 ports one for low pressure and one for high pressure. the low pressure is bigger in diameter and is usually close to the dryer and or fender and firewall. the high pressure is near the condensor on the fron of the vehicle. if there are caps for the ports low will be blue and high will be red. low side pressure should be 35-50 psi and high pressure should be 135-150 psi

May 11, 2009 | 1998 Dodge Dakota

Not finding what you are looking for?
1998 GMC Savana Logo

Related Topics:

149 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

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

Answer questions

Manuals & User Guides

Loading...