Question about 1993 Chevrolet S-10 Blazer

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Air conditioner i just added a recharge kit to my blazer but now my compressor is making a noise, is this normal?

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No not normal could be the clutch, or could be normal if you hear a click followed by a slight rattle type of noise, best to compare with another vehicle that has an operative AC if you are not accustom to AC funtions

Posted on Aug 01, 2008

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2 Answers

2002 Chevy blazer. When air conditioner is on it hesitates when I take off and normal when air is off.


That Air Conditioner compressor puts a strain on the engine. Kind of normal to experience this

Jun 18, 2015 | 2002 Chevrolet Blazer

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1998 Blazer A/C blows hot air.When I turn on the air conditioner it does not click. However, hot air still comes out of the vents instead of cold.


You need to recharge your a/C in the short term to get it going again. An auto parts can sell you a recharge kit for something like $30-50. if it stops working again your a/C system had a leak somewhere and you need to get that checked out by a shop or you can inject a uv dye and find the leak yourself.

Feb 05, 2013 | 1999 Chevrolet Blazer

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Air conditioner not working


If you are still getting air from the vents but it is not cold then you either have a bad compressor or just need to recharge it.

With the engine on in idle, turn on the AC and watch the RPMs. They should drop about 50-100 when you turn it on, also listen for the sound of the compressor kicking in. If you notice either of these things then the compressor is probably fine and the AC just needs to be recharged.

Head to your local auto parts store and pick up a recharge kit. The kit will have pretty good instructions on how to recharge it. If you are having difficulties following them just let me know.

Jun 10, 2011 | 2004 Audi A4

1 Answer

My 2003 jeep liberty's air conditioner blows hot


Probably, to be sure make sure the compressor is coming on. With the engine running turn on the ac and watch the rpms, they should drop for a second if the compressor is coming on. If so you just need to recharge, the refrigerant is R-134a, which you can get from your local parts store along with the kit needed to charge it. The kit will come with detailed instructions and is a pretty easy job.

Jun 10, 2011 | 2003 Jeep Liberty

2 Answers

How many pounds of r134 and how much oil ozs.


somewhere around 1.6 pounds (1lb.14ounces) of R134a if system is evacuated and 3 ounces of oil with new compressor.
keep pressure on the low side around 34-37psi & it should blow snow. Below are normal car AC pressure readings with 134A.
  • Normal readings on high and low side with AC OFF (static pressure) – Depends on outside temperature, but normally is between 80-105 PSI
  • Normal low side reading with AC on high speed and MAX & engine at 800-1000 RPM’s – Ranges from 25-35 PSI –
  • Normal high side reading ranges from 200-350 PSI
Don’t assume that if adding little Freon is good that adding a lot is better! Overcharging just a little can decrease the performance of the system and possibly damage the compressor.
DIY recharge kit:
With the AC on the coldest setting, use a thermometer in a middle vent. Normal vent temperature readings will vary depending on the (ambient) outside temp. The vent temperature should range from around 42-55 degrees in my experience. If normal gauge readings are obtained and the vent air is cold – STOP don’t overcharge the system.
Thank you for using fixya and be safe.

Jul 19, 2010 | 1994 Chevrolet S-10 Blazer

2 Answers

Air conditioner compressor making a knocking noise while running.i read that oil needs to be put in it if so where and how or do I need to plan on replacing the compressor


Get a can of R134a refrigerant with sealant and oil and add with a hose.
Can buy at Walmart for under $30.
Buy the conversion from R-12 to R134a kit if you need to.

Sometimes adding a few ounces of oil will quiet the compressor but you have to try.

Compressor is probably a few hundred dollars to replace, so try the cheap solution first.

Jul 04, 2010 | Cars & Trucks

1 Answer

AC comes on, then shuts down before car is cooled. Compressor activates and blows cool air for about 15 seconds then shuts down.


Low on R134a, you need to have the system recharged. Try to stay away from the do it your self kit that most Auto Parts store carry.
Below are normal car AC pressure readings with 134A

Normal readings on high and low side with AC OFF (static pressure) – Depends on outside temperature, but normally is between 80-105 PSI

Normal low side reading with AC on high speed and MAX & engine at 800-1000 RPM’s – Ranges from 25-35 PSI

Normal high side reading ranges from 200-350 PSI

Don’t assume that if adding little Freon is good that adding a lot is better! Overcharging just a little can decrease the performance of the system and possibly damage the compressor.

Thank you for using fixya and good luck.

http://www.freeautomechanic.com/airconditioning.html

Jun 12, 2010 | 1998 Cadillac Eldorado

1 Answer

Air conditioning is not cold


Probably the refrigerant fluid pressure is too low. You can get an inexpensive (about $20) R-134a recharge kit with pressure gauge from a discount store (Wal-mart) or auto parts store. Follow the instructions. It's worthwhile to try recharging to see if the a/c system will hold a charge, before you spend more money on expensive diagnostics and repairs. Also, you should try to determine whether the A/C compressor is coming on. If it is working you should be able to hear it engaging. Many A/C compressors are designed to not engage if the fluid pressure is too low, so make sure that the pressure on your recharge gauge is at the recommended level. Possibly the compressor fuse may have blown out, so check the compressor fuse in the fusebox under the hood. If the fuse is ok, and the compressor does not come one even after you have recharged the system, this tells you there might be a problem with the compressor. Another possibility is that the A/C switch has gone bad. You will need to access it with a voltmeter to test it. What you hear behind the glove box is the evaporator. Some low-level noise is normal.

Mar 29, 2010 | 2003 Acura MDX

1 Answer

97 Saturn Sc air conditioner not able to recharge


i would verify the ac clutch is still grabbing first as that is a lot cheaper.

Feb 26, 2009 | 1997 Saturn SC

1 Answer

The air conditioner is blowing hot air and the compressor is making noises, but the noise doesn't seem severe enough to indicate a blown clutch or compressor. When I turn the AC on, the RPM's increase and...


It seems like a recharge may be in order. I'd try it for sure. Most recharge kits come with a pressure gauge that fits on the end of the coolant can and shows you how much refrigerant you have in the system.

Jul 21, 2008 | Saturn SC Cars & Trucks

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