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Trouble Accelerating with A/C On


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eric.dunham
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Jul 4, 2012, 7:32 PM

Post #1 of 5 (1262 views)
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Trouble Accelerating with A/C On Sign In

Hi all! I'm a new member here, so if this has been discussed before, feel free to point me in the right direction. I did search the forum, but wasn't able to find a post that matched my problem, so I decided to just be a pain and ask.

I have a manual 2001 Kia Sephia that I recently recharged the A/C in. Since I've started using the A/C again, the car sounds like it's straining very, very hard whenever I accelerate (it still accelerates, but I have to be more careful with the clutch than normal). I'm not really sure how to describe the sound it makes, it's not the same as normal engine sounds, more high-pitched and whiny, though not super high-pitched like bad brake pads. As soon as I let off the gas, the sound significantly diminishes, but does not completely disappear. If I turn off the A/C, the noise goes away and the car runs like normal. The sound is present when I give the car gas in neutral or with the clutch in, so it's not the actual moving that seems to be the problem. The "straining" noise seems to lessen if I turn the blowers down, though not by much.

Prior to recharging, I had not used the A/C for over a year (never really worried about it), so I'm not sure when or how this problem stared.

Does anybody have any idea what this would be? I'm pretty new to car repair, so I don't know where to start. I was thinking it's probably a belt, but I'm not sure and I'd rather not spend money just to be wrong, as money's pretty tight right now.

Thanks in advance for any help or advice you can give!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 4, 2012, 7:43 PM

Post #2 of 5 (1245 views)
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Re: Trouble Accelerating with A/C On [In reply to] Sign In

You say you had the A/C recharged. Did a professional shop do that and did they completely evacuate the system and charge it with a weighed charge of refrigerant?
Did they point out any issues with the A.C?




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



eric.dunham
New User

Jul 4, 2012, 8:57 PM

Post #3 of 5 (1209 views)
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Re: Trouble Accelerating with A/C On [In reply to] Sign In

No, this was a home job, so if there's something to screw up, there's a possibility that it happened.

It might be irrelevant, but the A/C itself seems to be working quite well, the car just doesn't like when it's on.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 4, 2012, 9:00 PM

Post #4 of 5 (1204 views)
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Re: Trouble Accelerating with A/C On [In reply to] Sign In

Something to screw up? You have no idea how bad you can screw up and the thousands it can cost you.

Read this

http://autoforums.carjunky.com/..._A/C_SYSTEMS_P45460/




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



nickwarner
Veteran / Moderator
nickwarner profile image

Jul 5, 2012, 11:26 PM

Post #5 of 5 (1163 views)
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Re: Trouble Accelerating with A/C On [In reply to] Sign In

Even factory Kia didn't give you enough power to get out of its own way. Make the compressor overwork and that gives you the issue you have. The straining noise itself says to me something is very bad. Stop using the AC until the problem is repaired properly or fixing what will blow up in the system from this will cost far more than taking it to the right people the first time around. Please tell me you didn't add 134a with leak sealer to this.




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