Question about 2001 Jeep Grand Cherokee

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2001 Grand Cherokee blower goes to defrost under acceleration

With the blower selector in any position (face, feet, or mix) when the jeep is accelerated even slightly the air will kick out of the defrost vents, but always returns to the selected vents when cruising at a constant speed. Any help?

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You have a vacuum leak. Look under the dash and check the placement of the vacuum hoses that activate the vent doors. One or more may have slipped or may be cracked.

Posted on Dec 28, 2008

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Fa goes off when ac on thn comes back onwhat may be wrong 1999 jeep grand Cherokee


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check your blower hoses to see if one or more have come loose or got redirected or the selector switch isn't functioning properly (is it blowing better on defrost as opposed to floor vents, or forward vents, etc.)
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Oct 26, 2010 | 2000 Jeep Grand Cherokee

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I have a 2001 jeep grand cherokee. The AC blower just stopped one day. My husband took the blower off and connected it directly to the battery and the blower worked. Could we have a short somewhere?


Check resistor block . He'll find it where connector was plugged in under dash or near it. Quite often when resistor goes, you'll get only high fan for a while,then nothing. He can check for incoming voltage to that resistor as well. Normally will be a 2" x 3" roughly with connectors sticking out and held in with 2 small screws into duct work area.

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Robert

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