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rough idle when stopped and fan on

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Old Jun 5, 2014
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rough idle when stopped and fan on

Hi

I have a 2005 Civic with 218k miles, recently I have a rough idle when stopped, the rough idle stops when I turn the Blow Motor Fan **** off. Turning the fan back on starts the rough idle again.

Anyone ever hear of this?

Thanks

b.
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Old Jun 6, 2014
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Re: rough idle when stopped and fan on

Could be normal, depending on how rough it gets. SOME can be normal and expected.

Electrical load makes the engine work a little harder.
AC puts a lot of load on the engine.

Does the idle speed drop too much with these loads?
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