A/C blowing hot and cold

2006 CHEVROLET COLORADO
5 CYL • 2WD • AUTOMATIC
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TOMMT
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  • 3 POSTS
I replaced the resisitor and wiring harness because the switch was only running on high. It was very cold always but only on high. Now all switch positions are working, but the a/c wants to blow cold then warm then cold. It dosen't do it all the time, jus when it takes a mind to. Any ideas?
Aug 19, 2011 at 11:18 PM
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SATURNTECH9
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So when it blows hot is the light on the a/c button lit up?
Aug 19, 2011 at 11:22 PM
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TOMMT
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yes the a/c light is on and the recir light is on.
Aug 19, 2011 at 11:40 PM
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SATURNTECH9
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Is your engine running hot when the a/c cuts out?Is your engine fan clutch working correctly?Those arent the best in the world i have seen a lot of them fail.Also have you checked the high and low pressures on your a/c?
Aug 20, 2011 at 12:01 AM
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TOMMT
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no the engine is running hot and I believe the fan cluth is working correctly. I have not checked high and low pressure on the A/C, I guess I will have to take this thing in to the dealer
Aug 20, 2011 at 12:03 AM
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SATURNTECH9
  • ✓ASE Certified Mechanic
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You have to make sure the a/c is fully charged the engine is not running too hot when the a/c blows hot.Also that the a/c condensor is not plugged up with debris not allowing enough air to come thru it.Let me know what you find out.
Aug 20, 2011 at 12:08 AM
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