Blend Door (with pictures and the common problem)

[beir]

I had heater issues...tried changing accuator (thumb wheel extension on 7/32 socket made removal a snap...) ended up being clogged heater core spent $140 to find out it was a 5 minute fix and free also! Make sure heater core is not clogged before changing accuator

[jetprofessor]

On my 97 Blazer everything in the a/c system is new, even the blend door motor and I still have the same issue. When it's overcast and the sun isn't beating down nasty hard, I get pretty cold air out the dash but not spectacular. But when it's blazing hot, it's barely a whisper of medium cold. If that's a measurement. Is there a certain timing for the blend door motor gear that I didn't get line up correctly? With 38 on the low side and 185 on the high side and the accumulator will freeze your hand, what's the problem, does anyone know?

Stressed!

[aleekat]

If it's 90 outside, 140 inside what do you think the ducts are? Sunshade cover. Step daughter complained that her a/c wasn't blowing cold enough. She never put the sunshade in place. Next time she stopped by. I put the sunshade up, waited around 4 hrs and drove it around. Pretty cold. Get a meat thermo and see what actual temp is blowing out the vents.