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1995 Chevrolet S-10 a\c problem

Tiny
A1HI
  • MEMBER
  • 1995 CHEVROLET S-10
  • V6
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
A/c fan will not turn on and compressor will not engage. Checked v at compressor not 12 v, jumped the ls switch, replaced relay, run pos neg from batt to compressor, checked all fuses. Still blower no on and compressor not engaging
Friday, June 12th, 2015 AT 7:44 PM

35 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So what are your ac pressures like?If the ac system is low on charge/pressure it wont turn on also if the pressure is too high also the compressor will turn off.
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Friday, June 12th, 2015 AT 8:54 PM
Tiny
A1HI
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I am not getting any pressure on gage
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Saturday, June 13th, 2015 AT 5:57 AM
Tiny
A1HI
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  • 31 POSTS
I can receive text if that helps 9186401704
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Saturday, June 13th, 2015 AT 5:59 AM
Tiny
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  • 31 POSTS
I checked for shorts pulled neg batt cable used a test light pulled fuses one at a time the light stayed on
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Saturday, June 13th, 2015 AT 12:06 PM
Tiny
SATURNTECH9
  • MECHANIC
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If you have no pressure the compressor wont turn on you cant use a test light on newer cars to test for parasitic draws like that anymore.
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Saturday, June 13th, 2015 AT 12:46 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Also iam sorry we dont do texts or phone calls its strictly thru the posted questions. It sounds like it low on charge or out of charge in the ac system. Look around and see if there looks like any oil build up on the ac hoses etc where dirty has collected indicating you might have a leak.
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Saturday, June 13th, 2015 AT 2:39 PM
Tiny
A1HI
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  • 31 POSTS
If I am not getting voltage to compressure, relay etc would I need to replace the computer control module
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Saturday, June 13th, 2015 AT 4:03 PM
Tiny
SATURNTECH9
  • MECHANIC
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Again if the ac system doesnt have enough pressure in it the computer wont allow the compressor to turn on. Also go back and read my last two posts I asked you to do something in one of them.
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Saturday, June 13th, 2015 AT 7:36 PM
Tiny
A1HI
  • MEMBER
  • 31 POSTS
Checked for oil on lines and compressor I found the shadier valve on the drier was jammed opened, which would lose all the Freon. I will replace valve and try to inject dye in system to check for leaks.
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Sunday, June 14th, 2015 AT 8:48 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I would replace both the high and low side ac valves I always do when I recharge a system plus dye. Dont add any stop leak.
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Sunday, June 14th, 2015 AT 9:30 AM
Tiny
A1HI
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  • 31 POSTS
Replaced valves charged enough for compressor to engage had to run a jumper wire from pos batt to get the compressor to engage it did engage. I checked all the fuses no voltage to compressor blower motor. What is customary for donation?
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Sunday, June 14th, 2015 AT 3:05 PM
Tiny
SATURNTECH9
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The donations are whatever you want to donate. Iam confused you said you added enough charge for the compressor to turn on?Then you said you jumped the ac compressor to make it come on?Then you said you have no power to the blower motor and the compressor? Also was the ac system empty? How much charge did you add?
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Sunday, June 14th, 2015 AT 3:23 PM
Tiny
A1HI
  • MEMBER
  • 31 POSTS
Charged with freon and dye to get the compressor to engage had to run a jumper wire from pos battery to compressor
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Sunday, June 14th, 2015 AT 4:08 PM
Tiny
A1HI
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  • 31 POSTS
The system was empty I added 2 cans of freon with some dye.
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Sunday, June 14th, 2015 AT 4:13 PM
Tiny
SATURNTECH9
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So did you add two 12oz cans of charge?They have different size cans thats why I have to ask.
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Monday, June 15th, 2015 AT 6:51 AM
Tiny
A1HI
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  • 31 POSTS
2- 12 ounce cans
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Monday, June 15th, 2015 AT 7:22 AM
Tiny
SATURNTECH9
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So the inside blower fan works or doesn't work when you turn it on?
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Monday, June 15th, 2015 AT 1:05 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Also what are the high and low pressure readings now?
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Monday, June 15th, 2015 AT 1:08 PM
Tiny
A1HI
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  • 31 POSTS
The inside blower fan is not working
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Tuesday, June 16th, 2015 AT 3:39 PM
Tiny
A1HI
  • MEMBER
  • 31 POSTS
The low side 30 high 120 it was leaking so bad I could not get a good reading. It was leaking at the dryer and at the heater core it was inside could have been the expansion valve.
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Tuesday, June 16th, 2015 AT 3:43 PM

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