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Message: [QUOTE="tgf, post: 877431, member: 750"] Back story. My heater has been on the down hill slide this winter, a/c was weak this last summer. The week before Christmas the defrost couldnt keep up with the weather so I took it in and had the coolant system flushed and filled. Heater worked better but still not what it used to be. Two days ago I about froze coming back from Joplin. I let the engine come to operating temperature with the heater wide open this afternoon and checked both hoses going to the heater core. Neither one felt any warmer than the air around the block. I let it cool pulled into my shop and pulled the heater core and used a sump pump to see if it was stopped up. It didn't appear to be plugged up, so I reinstalled it and checked the blend door actuator. Question 1 should the actuator spaz when you adjust the temperature? I also noticed the ac compressor cycling repeatedly when I went to recheck the hoses after reassembly. I unplugged the compressor and the hoses began to retain heat. Question 2 what would cause the ac compressor to cycle like this, and how do I track down what is wrong? Sorry for the long post but I'm at a loss and could use some help. Thanks in advance. [/QUOTE]

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