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Old 06-26-2013, 05:26 PM   #1
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A/C changing idle

When I have the car in park it idles at 1 and a quarter but when I turn the air on while its in park it idles down below one. Is this going to cause a problem or is this normal?
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Old 06-26-2013, 08:22 PM   #2
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very normal
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Old 06-26-2013, 08:34 PM   #3
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AC is putting a load on the motor, therefore it'll run a little lower. Completely normal and will not hurt a thing.
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Old 06-26-2013, 08:52 PM   #4
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Quote:
Originally Posted by scottydsntknow View Post
AC is putting a load on the motor, therefore it'll run a little lower. Completely normal and will not hurt a thing.
Thanks it's probably done it in every vehicle I've owned just noticed it this particular time
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Old 06-26-2013, 09:04 PM   #5
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If it jumps up and down ( revs up for a few then a drop) you need freon
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Old 06-26-2013, 09:06 PM   #6
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Quote:
Originally Posted by Slp_loudmouth View Post
If it jumps up and down ( revs up for a few then a drop) you need freon
It's not doing any of that all it does is what I previously posted but ill be on the look out
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Old 06-27-2013, 05:13 PM   #7
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Mine idles at 600 with the a/c off. 800 when i turn it on??

Manual
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Old 06-28-2013, 07:59 PM   #8
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Apex, that's totally normal. Idle is going to change with the a/c on due to load on the engine. Its more noticeable on manual cars at idle because the car is actually in neutral, rather than an auto where its still in gear but your foots on the brake.
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