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Thread: A/C only gets cold at higher RPMs...

  1. #1
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    Question A/C only gets cold at higher RPMs...

    Can't find anything in the Search, so here goes...

    A/C at idle and slow mph blows luke warm... On the highway it's nice and cold.
    So, today I experimented. At 25 mph, put it in Neutral and revved it to 4500rpm. Instant cold.

    Ideas?
    Thanks!
    ---JIM---
    SilverBullet75
    Formerly: '01 Ebony VXSTLTH
    Now: '08 Saab 9-7x Aero 6.0L

  2. #2
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    I have notice that same thing,not only with the VX but even with other cars too.

    As the engine's RPM moves up the serpentine belt goes up in revs causing the A/C clutch to compress more & faster.

    I'm sure one of our "gurus" will light up our thoughts pretty soon
    Dakar was just the begining.

  3. #3
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    My old '99 Astral had better a/c than my current '01...
    BTW... freon level is good.

  4. #4
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    Quote Originally Posted by SilverBullet75 View Post
    My old '99 Astral had better a/c than my current '01...
    BTW... freon level is good.

    Mines is pretty cool after few minutes,instead the jeep liberty that my company assigned to me couple of weeks ago for supervising is a joke of a A/C system.

    I got to turn it to the max level to get some chill in there

  5. #5
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    Quote Originally Posted by SilverBullet75 View Post
    My old '99 Astral had better a/c than my current '01...
    BTW... freon level is good.
    What's the freon pressure? Only asking because I know if the pressure is too high, the AC wont run as cold. Maybe check it a few times and see if your losing freon

    Also could be the compressor starting to go out

    Good luck, at least it "sort of" works right?

  6. #6
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    Time to check your oh-so-pricey compressor. Notice any "Dragon Blood" (bright green fluid) on your drive or garage floor? Good luck with this one. Get out your checkbook

  7. #7
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    I have the same problem with my Eclipse so let us know if you ever find the solution.

    & yes, I've checked the Freon - too much pressure. I've been avoiding taking it in to have the system purged & refilled since I'm not convinced it will fix the situation.
    [SIGPIC][/SIGPIC]

    Put a smiley after you say that Bub.

  8. #8
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    The vx uses r-134a refrigerant and the proper amount is between 25-45 psi.And all auto's with ac blow warmer when at idol and colder when the rpm's are higher.

  9. #9
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    Were there any changes between '99 and '01?
    The '99 was ice cold at idle..

  10. #10
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    "ac blow warmer when at idol and colder when the rpm's are higher."

    Understood ... but not as dramatic as what I have or what silverbullet seems to be describing.

    "Were there any changes between '99 and '01?"

    There isn't supposed to be anything different other than the 'automatic' feature.

  11. #11
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    Quote Originally Posted by tom4bren View Post
    "ac blow warmer when at idol and colder when the rpm's are higher."

    Understood ... but not as dramatic as what I have or what silverbullet seems to be describing.

    "Were there any changes between '99 and '01?"

    There isn't supposed to be anything different other than the 'automatic' feature.
    If you check some of Marlins posts on replacing the AC pump, I believe he indicated that there was a difference in model years.

  12. #12
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    Did you get your A/C problem fixed Silverbullet75 (Jim)? If you like I can put you back in your old ICE COLD 99 Astral and trade you for your luck warm 01..

  13. #13
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    hehe.. nice try..

    Funny enough though... I tossed the idea around.
    Not very long mind you...

    (queue theme from the Young and the Restless...)
    I love/d that VX (astral)... it was & is a wicked VX.
    But, I have a new love now... a dark desire.
    Twisted, and evil... as only an Ebony can be.
    Someday... maybe, someday... I shall meet my first VX-love again... and wrap my hands around her supple...

    Steering wheel.


    ......to be continued.

  14. #14
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    That day could be sooner rather then later. There's no replacement of your first love, you should take advantage of this opportunity to have her back, she misses you dearly.

  15. #15
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    Funny thing is... the mileage that has been added to the astral is only about 6k more than what I sold it at.

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