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Old 09-20-2016, 02:50 PM
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intermittent ac blower

2011 grand Cherokee, 5.7 hemi, ac blower runs full speed for a minute or so, then drops to lowest air output for 5 seconds then returns to high speed, and keeps repeating, acceleration does not affect this, it happens under all driving conditions. any others with this history please advise.

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Old 09-20-2016, 02:57 PM
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Re: intermittent ac blower

[QUOTE=wayne mid massey;1326642]2011 grand Cherokee, 5.7 hemi, ac blower runs full speed for a minute or so, then drops to lowest air output for 5 seconds then returns to high speed, and keeps repeating, acceleration does not affect this, it happens under all driving conditions. any others with this history please advise. When I try to go to new message, some AH tries to shut me down by saying that my computer is infected, please get this guy shut down.
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Old 09-25-2016, 05:29 PM
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Re: intermittent ac blower

Hi Wayne. Welcome.
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Old 10-04-2016, 07:03 PM
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Re: intermittent ac blower

Quote:
Originally Posted by wayne mid massey View Post
2011 grand Cherokee, 5.7 hemi, ac blower runs full speed for a minute or so, then drops to lowest air output for 5 seconds then returns to high speed, and keeps repeating, acceleration does not affect this, it happens under all driving conditions. any others with this history please advise.
I too, have this exact same problem. From the limited info I can find, it's possibly a blend door motor, somewhere under the dash that is the culprit, but every thread I have found asking about the problem never states that it actually is the cause or not. People never seem to return to their threads after resolving their issue. It took 15 damn minutes to defrost my windshield this morning......
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Old 10-08-2016, 01:13 PM
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Re: intermittent ac blower

I just posted a lengthy description of something similar with mine over on another thread. Check out...

2011 Grand Cherokee Laredo - blower motor cycles on/off
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