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honda: rpms

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Old 08-07-2003, 07:35 AM
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Default honda: rpms

1992 honda civic lx:

i know this happens with a lot of cars, but when i cut my ac on, my rpms drop by at least 200, and i noticed today when i cut on my headlights, it drops another 200...if i have them both on at once, my car almost stalls...any ideas?
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Old 08-07-2003, 07:53 AM
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well the AC is running off the belt, so its tugging on the engine when you turn it on, so basically its parasitic... you probably knew that but i cant figure out a legit reason why that would make your car almost stall, and for the lights it sounds like your alternator might be going bad... whats the milage on this bad boy?
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Old 08-07-2003, 07:58 AM
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just hit 133,000
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Old 08-07-2003, 09:27 AM
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Usually when ac is activated though, it signals the ecu to idle higher.
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Old 08-07-2003, 09:30 AM
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not enough horsepower to spin ac belt....car dieing...ack
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Old 08-07-2003, 09:37 AM
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Every four cylinder car I've ever owned had significant power loss with the AC on.
On a side note, if you haven't replaced your alternator within your 133K miles, you may need to do so soon. They're not hard to replace on Hondas.
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