A/C makes my car run REALLY slow.

dmontzsta

Founding Member

Aug 6, 2001

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SoCal

Jul 4, 2006

#1

• Jul 4, 2006

• #1

I dont know why it does this, I have never had any other car do this. When my A/C is on the car is a complete dog. I can punch it and it sounds strong, but it just does not move like it does when it is off. It also is making a sound like a supercharger when it is on. The compressor is pretty loud at high rpm. My car would probably lose to a civic with the A/C on.

Any ideas?

 

04gtdrop

New Member

Jun 10, 2005

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Sac, CA

Jul 4, 2006

#2

• Jul 4, 2006

• #2

I've heard that you lose 20% of your power when the a/c is on. But its supposed to cut off at WOT.....maybe someone else with more knowledge will chime in.

 

kid rock

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Jan 24, 2006

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THE 51ST STATE!!

Jul 4, 2006

#3

• Jul 4, 2006

• #3

04gtdrop said:

I've heard that you lose 20% of your power when the a/c is on. But its supposed to cut off at WOT.....maybe someone else with more knowledge will chime in.

Click to expand...

that explains why when i boot it, the a/c stops blowing cold, thanks man

oh and sorry for taking over your thread, you can have it back now its used anyway lol

Si

P.S do you actually lose 20% then??

 

streethorse

15 Year Member

Oct 8, 2005

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Dallas Texas

Jul 4, 2006

#4

• Jul 4, 2006

• #4

Something I noticed after driving my 99 which had steeda UDP's, and
my 04 which doesnt have them yet. The air conditioner wont put as
big of a strain on the engine, seems like 50% less hp draw to me w/UDP's.
Anyone else notice that?

 

nwapache

New Member

Jun 27, 2006

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Seattle,WA

Jul 4, 2006

#5

• Jul 4, 2006

• #5

A/C mine does the same thing, the compressor leeches mucho HP. If you wanna go fast leave the g/f at home and open the windows

 

Y

Yellow2002GT

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Feb 20, 2006

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Raeford, NC/ FT Bragg

Jul 4, 2006

#6

• Jul 4, 2006

• #6

Yea....I have underdrive pulleys and a meizure electric water pump and don't notice much if any power loss!

"ED"

 

Mike97gt

it doe snot

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Jan 26, 1999

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the people's republic of massachusetts

Jul 4, 2006

#7

• Jul 4, 2006

• #7

with your a/c making that much noise and power loss I think you have a seized or partially seized up compressor..


So with the A/C off you don't have the noise you described but with the a/c engaged you do? if so then buy a new compressor.

 

dmontzsta

Founding Member

Aug 6, 2001

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SoCal

Jul 4, 2006

#8

• Jul 4, 2006

• #8

svttech76 said:

with your a/c making that much noise and power loss I think you have a seized or partially seized up compressor..


So with the A/C off you don't have the noise you described but with the a/c engaged you do? if so then buy a new compressor.

Click to expand...

That is correct. Sometimes it does not feel that cold either, dont know if it is cause of the 100 degree temps outside though. I dont know if it is normal, but at an idle with the A/C on, it will kick my rpm up a little, then it backs down, you can hear the compressor kicking on and off.

 

twogts4us

15 Year Member

Apr 1, 2004

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Dunedin, FL

Jul 4, 2006

#9

• Jul 4, 2006

• #9

Get gears - 4.10 or 4.30...that'll solve most of the loss of power issue.

 

W

white-04

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Apr 1, 2005

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Owings, MD

Jul 4, 2006

#10

• Jul 4, 2006

• #10

My tuner did something that has made it rob less horsepower. It kicks on more frequently, just not as power robbing when it does.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Jul 4, 2006

#11

• Jul 4, 2006

• #11

The problem with the A/C is that it tends to heat soak the engine if you run it for a while in traffic. All the hot air from the condensor mixes with the hot air from the radiator and heatsoaks your engine bay and your car ends up a total dog.

Doesn't matter if it kicks out at WOT either, you lose a LOT of power.

If i sit in traffic for 20 mins on a hot 90+ degree day and then get to an area when i can floor it, my car is such a dog. It will bog off the line and then WOT feels like 1/4 throttle on a normal day.

I never notice such a dramatic loss in any other vehicles.

My A/C is ice cold though. I love it

 

Cantslowdown

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Jun 20, 2004

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Mt.Home AR!

Jul 4, 2006

#12

• Jul 4, 2006

• #12

Mine dosent lose much power at all..

 

P

Pennywise2

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May 16, 2006

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Jul 4, 2006

#13

• Jul 4, 2006

• #13

I agree with Mike your A/C compressor is probably bad
and needs to be replaced.My A/C compressor on my car
was not blowing out any cold air.I had my mechanic look
at it and it turned out that my seals in my A/C compressor had two holes in them and the clutches were
bad.I had to recharge the system too.I ended up installing a brand new Motorcraft A/C compressor and recharging the system and the problem was gone.

 

COramprat

...I can take it. I think.

20+ Year Stangneter

Mar 2, 2003

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Sea of Tranquility

Jul 4, 2006

#14

• Jul 4, 2006

• #14

Try a recharge first. Could just be you are low on refridgerant. If you have a mechanic you can trust have the system checked out.

 

sgarlic

Founding Member

Apr 21, 2001

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Jul 4, 2006

#15

• Jul 4, 2006

• #15

Ever drive a 4 cylinder stick with the A/C on? Now THAT'S a dog.

 

BurningRubber

10 Year Member

Dec 6, 2004

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Jul 4, 2006

#16

• Jul 4, 2006

• #16

Yeah I can feel mine kick on and off, and when it kicks off it sucks alot of power out of the car. I can imagine it also kills MPG.