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Air Conditioner not working?

Tiny
PURZNER
  • MEMBER
  • 11 POSTS
When I was younger I had an s10 blazer that was doing that, it turned out to be a cut out switch.

In my 94 it was either on the filter drier or on the ac line itself

the only other switch I know of is mounted on the compressor itself.

But if it was me id probally start checking on those 2 switches
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Tuesday, July 14th, 2020 AT 11:19 AM (Merged)
Tiny
SALVADOR SANCHEZ
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
Air Conditioning problem
1998 Chevy Blazer 6 cyl Four Wheel Drive Automatic

When I turn on my A/C no cold air comes out only hot air the condenser feels cold and so do the lines going to the compressor, the blower motor also works fine. When ever I switch over to where it markes hot air the condenser and lines start to go back to normal so I need your help figuireing out what to do to get cold air flowing in to the cab
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Tuesday, July 14th, 2020 AT 11:19 AM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Alright! First off turn on the ac setting and turn the air from hot and slowly go all the way to cold. Make sure you do this with the engine hot.

Does air coming out of the vents change from very hot to outside air temp or is there hardly any temp change at all
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Tuesday, July 14th, 2020 AT 11:19 AM (Merged)
Tiny
ARANISLELASS
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 124,000 MILES
I have a 4.3 L Chevy Blazer 1998. When you start the engine the heating and air "fight" with eachother and something under the dash pocket makes an odd squeaking sound. If you pull the fuses out that make the heat/ac work it blows HOT air constantly through the vents. I'm desperate as it's summer time in the south.
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Tuesday, July 14th, 2020 AT 11:19 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Sounds liek the blend door actuator is going out. Try removing the covers under the dash on the pass side to see if you can locate where the noise is coming from. If it is the actuator, try unplugging it and see if it will keep the door in the cool postion
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Tuesday, July 14th, 2020 AT 11:19 AM (Merged)
Tiny
KSCHULZ1985
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 126,000 MILES
Hi, I used a do it your self ac recharge kit hat I purchesed at my local auto parts store. I used and followed the directions, but the At aC does not get cold. Also, when it was on while I was doin this, the clutch runs a little loud. What can I do to have the AC run cold again
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
When it comes to AC system few thing need to be checked
you have to make sure belt is in a good condition and not slipping off the compressor
you may have to evacuate the system and replace filter and add the correct amount of oil and 134A gas
to much gas or low it will effect the degree
what do you have on the low side for pressure
also check and make sure coolant and operation of coolant fan
good luck

*****************************************
need manual CHECK IT @
https://www.2carpros.com/kpages/auto_repair_manuals.htm
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
WCKEDRED
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • AUTOMATIC
  • 147,000 MILES
I have a 1998 chevy blazer that recently had engine repairs done. Iam expierencing air conditioning blowing warm air only and no cool air. I recharged a/c still blows out warm air. Have automatic climate control system
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
CRZYDRVR
  • MEMBER
  • 432 POSTS
Check the HVAC fuse in the drivers side of the dash. It will be between the side of the dash and the door. Sounds like fuse is blown and it went into default mode.
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
DALTONTREA
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 19,000 MILES
Why does my chevy blazer blows out hot air even when the heater is off?
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
One of the vents is not closing. You need to find out if all the doors are closing in the off mode. If not, then it gets tricky to find the vent door and why.

Roy
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
JOHNNY ROCCO
  • MEMBER
  • 3 POSTS
  • 1997 CHEVROLET BLAZER
Air Conditioning problem
1997 Chevy Blazer 6 cyl Four Wheel Drive Automatic

I have had the Compressor, Condensor and both lines replaced in the 97 Blazer, but no matter what the mechanics cannot find a problem. Would appreciate any suggestions as there is no leaks, two new condensors (as we trhought the first was faulty). Mechanic doing their best as they are not charging me but would like to know any advice.
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Did they check the evaperator for a leak do you know?
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
JOHNNY ROCCO
  • MEMBER
  • 3 POSTS
Hi there. Yes they have checked numerous times for leaks and found nothing - very frustrating!
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Did they check the evaporator?
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Tuesday, July 14th, 2020 AT 11:20 AM (Merged)
Tiny
OAKRAIDERS
  • MEMBER
  • 2 POSTS
  • 1996 CHEVROLET BLAZER
  • 110,000 MILES
My a/c is blowing warm. My compressor clutch is engaging when on high and max cool. Air blows through all vents and system is charged at 40-45 psi. The clutch makes a louder noise when spinning but engaging.
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Tuesday, July 14th, 2020 AT 11:21 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Can you give us the exact pressure readings running

Roy
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Tuesday, July 14th, 2020 AT 11:21 AM (Merged)
Tiny
OAKRAIDERS
  • MEMBER
  • 2 POSTS
45 psi
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Tuesday, July 14th, 2020 AT 11:21 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
High side and low side engine running

Roy
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Tuesday, July 14th, 2020 AT 11:21 AM (Merged)
Tiny
RKELLER00
  • MEMBER
  • 8 POSTS
  • 1996 CHEVROLET BLAZER
Air Conditioning problem
1996 Chevy Blazer 6 cyl Automatic 140000 miles

I tried to recharge it with kit and still no cold air. I did not see any leaks. Any suggestions to try?
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Tuesday, July 14th, 2020 AT 11:21 AM (Merged)

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