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post #1 of 14 (permalink) Old 08-03-2013, 05:59 PM Thread Starter
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RPM's Drop When Using A/C

It's been a hot summer where I live and so I've been using the A/C on my '06 LT more than usual. However, every time I use it my RPMs drop dangerously low. I want to assume it needs to be recharged but I'm a bit worried that my car will stall on the highway if it gets too hot again. Any suggestions?
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post #2 of 14 (permalink) Old 08-03-2013, 06:42 PM
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Probably a dirty throttle body.

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post #3 of 14 (permalink) Old 08-04-2013, 04:13 AM
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my rpms rise like only 100 or so when i turn my ac on but then i find my car is sluggish with ac on.
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post #4 of 14 (permalink) Old 08-04-2013, 04:24 AM
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Because the ac robs something like 20hp.

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post #5 of 14 (permalink) Old 08-04-2013, 03:43 PM
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Quote:
Originally Posted by JSMitch0981 View Post
It's been a hot summer where I live and so I've been using the A/C on my '06 LT more than usual. However, every time I use it my RPMs drop dangerously low. I want to assume it needs to be recharged but I'm a bit worried that my car will stall on the highway if it gets too hot again. Any suggestions?
Define dangerously low. Mine will dip down but only to about 700-750RPMs when the a/c is turned on at a warm idle, never any further. It's an accessory that robs power so it's kind of going to always happen.
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post #6 of 14 (permalink) Old 08-05-2013, 10:52 AM
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Guys, these are 4-cylinder cars. OF COURSE your going to lose power with it on.....
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post #7 of 14 (permalink) Old 08-05-2013, 03:34 PM
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Guys, these are 4-cylinder cars. OF COURSE your going to lose power with it on.....
I don't notice loss of power

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post #8 of 14 (permalink) Old 08-06-2013, 08:35 AM
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Quote:
Originally Posted by jmudd301 View Post
Define dangerously low. Mine will dip down but only to about 700-750RPMs when the a/c is turned on at a warm idle, never any further. It's an accessory that robs power so it's kind of going to always happen.
Since a tune, mine drops to 500 and sputters with a/c on. I'ma try to clean the throttlebody...see if that fixes it.


Last edited by stickx911; 08-06-2013 at 08:38 AM.
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post #9 of 14 (permalink) Old 08-06-2013, 02:37 PM
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Since a tune, mine drops to 500 and sputters with a/c on. I'ma try to clean the throttlebody...see if that fixes it.
Let me know how it goes when you clean the throttle body. If you have some CRC Mass Air Flow Sensor spray it may be worth cleaning your MAF/MAP sensors as well.
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post #10 of 14 (permalink) Old 08-09-2013, 05:39 PM
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A good detail clean of my throttle body fixed the problem. Needed tb cleaner and a flathead screwdriver to scrape as needed.

---------- Post added at 04:39 PM ---------- Previous post was at 04:38 PM ----------

Dont know how to do maf sensors or i would have.

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