Why does the engine "choke out" when running the defrost / ac unit?

2005 SATURN ION
118,000 MILES
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MBATFISH
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When I run my defrost and drive with rpms over 3.5 my engine does not respond to giving it gas and feels like it chokes itself out. I have to turn off the defrost and put the car in nuetral, then it engages and then runs fine.
Dec 12, 2011 at 6:04 PM
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RASMATAZ
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Go to this link for more information: https://www.2carpros.com/articles/engine-hesitates
Dec 12, 2011 at 6:07 PM
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SATURNTECH9
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So are you running heat set to the windshield?or the ac when this happens?
Dec 12, 2011 at 6:08 PM
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MBATFISH
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The heat for the winsows.
Dec 12, 2011 at 6:49 PM
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SATURNTECH9
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  • 30,869 POSTS
I would have the battery and alternator tested.Also make sure the battery cables are clean and tight.The only thing that makes sense since the only thing that is running is the blower motor with the heat on.Would be a charging issue or the blower motor is stealing a ground from somewhere else.
Dec 12, 2011 at 6:55 PM
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