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#1
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so sick of losing power when a/c is on
Ive had my SVX since Nov of 2003 so this is my first summer with this car. Now when i drive other peoples cars i never really notice a loss of power when the a/c is on but in the SVX it is veryyyy noticeable. When i have my a/c on i usually have it in the middle on the second setting with the temp down to 65 degrees. If I am at a red light and i acclerate the car wont rev or and it will move a tiny bit then it will burst out with energy and be fine. When i turn off the a/c this never happens and the car runs normal. Why does the a/c drain so much power?
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1993 25th Anniversary Edition # 156 of 301 ~ 121, 488 miles ( SOLD TO svxfiles 8/6/06) 2006 Subaru Impreza 2.5i....5spd - My daily driver 2006 Subaru Legacy 2.5i -7k miles..Mom's daily driver 2,543 Member of the SVX World Network |
#3
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Your compressor may be bad
Never happens with my cars. I think the AC drain is very minimal, especially with the variable displacement compressor. Try driving a Loyale or 4 cylinder XT with the AC running if you want to feel some serious AC-related power loss.
Dave |
#4
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Quote:
(Is this the sort of thing the "bead crush" ECU mod is supposed to remedy?) dcb |
#5
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It's very non-noticeable on my SVX also...on my I4, V6 and H6 engines...H6 has the least noticeable issue on the AC drag....
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-SSSVX 92 LS-L TEAL since Aug '01 92 LS-L YELLOW since Mar '05 |
#6
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"But I have noticed an occasional, momentary hesitation from a standing start with the air on, particularly before the engine warms-up. Is that what you mean, soobiesvx93? In my case, it doesn't strike me as a mechanical issue with the compressor."
yes that is exactly what i mean. But this is after the engine is warm. If it was cold i could understand but the engine is warm when this happens.
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1993 25th Anniversary Edition # 156 of 301 ~ 121, 488 miles ( SOLD TO svxfiles 8/6/06) 2006 Subaru Impreza 2.5i....5spd - My daily driver 2006 Subaru Legacy 2.5i -7k miles..Mom's daily driver 2,543 Member of the SVX World Network |
#7
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I thought the AC compressor was supposed to disengage under full throttle. I don't notice that happening on mine. I remember in my Im,preza that if I was flooring it I'd get a burst of warm air from the vents as the AC turned off. I never notice that happening with the SVX.
I also notice a difference in response when I manually turn off the AC before going into "b4tTl3 m0dE".
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IggDawg is cool -IggDawg 1992 Teal SVX LS-L 160k miles 4.11:1 final drive, K&B dropsprings, ART front rotors, stainless steel brake, aluminum underdrive crank pulley, Kuhmo Ecsta Supra 712's, K&N drop-in filter. Previously owned by Alacrity024. FOR SALE 1994 SVX LSi, Barcelona Red #1659, build date 11/93, 117k miles, RIP ECUtune stage 1, bead crush, smallcar shift kit, TB bypass, SS brake lines, silencer removed, alternator and grounding wires, Mobil1 @ 117k |
#8
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Quote:
dcb |
#9
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I am so sick of driving with "auto" on now. I can have the throttle pressed down and the damn car won't move and then all of a sudden it kicks in. Its 95 degrees here and the inside of my car is like a sauna. I got so mad i was losing power that i decided to drive with "vent" on and i was drenched in sweat when i got home. It was only a 10 minute ride. I mean its absolutley ridiculous.
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1993 25th Anniversary Edition # 156 of 301 ~ 121, 488 miles ( SOLD TO svxfiles 8/6/06) 2006 Subaru Impreza 2.5i....5spd - My daily driver 2006 Subaru Legacy 2.5i -7k miles..Mom's daily driver 2,543 Member of the SVX World Network |
#10
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If it's that bad, I'd have someone check it out.
dcb |
#11
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Agreed. I don't notice any major drop in power when accelerating with the A/C on...
-Chike Quote:
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"Wise men talk because they have something to say; fools, because they have to say something." - Plato 2013 Cosmic Blue 5spd Evo X GSR 2006 Galaxy Gray 6MT RX-8 (sold) 2006 Steel Gray WRX TR (sold) 1996 Brilliant Red SVX L (sold) |
#12
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same here. it's more of an inconvenience than a handicap.
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IggDawg is cool -IggDawg 1992 Teal SVX LS-L 160k miles 4.11:1 final drive, K&B dropsprings, ART front rotors, stainless steel brake, aluminum underdrive crank pulley, Kuhmo Ecsta Supra 712's, K&N drop-in filter. Previously owned by Alacrity024. FOR SALE 1994 SVX LSi, Barcelona Red #1659, build date 11/93, 117k miles, RIP ECUtune stage 1, bead crush, smallcar shift kit, TB bypass, SS brake lines, silencer removed, alternator and grounding wires, Mobil1 @ 117k |
#13
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Yeah, I agree with (absolutely no technical knowhow to back it up) getting it checked out.
When having the mechanic ride along with me to reproduce the current engine problem I am experiencing, the first thing he did when I started the car was fire on the AC as cold as it would go and as high as it would go to see if it was related to my problem. I experience no loss of power related to the running of it as far as I/we could tell. Good luck! |
#14
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I get the warm air treatment any time I floor it with the ac on.
I never really had AC before the svx, but I don't feel too much of a drop in power with it on under normal acceleration.
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Matt Locker Link 2015 BRZ Limited 6MT 92 Ebony LS-L ECUtune Stage2av1, Z32 MAF, 370cc injectors, TomsSVX intake, BontragerWorks 22mm RSB #003, HID Hi and Lo beams, OT endlink and bushing mods, PWR Aluminum radiator, Harvey's QC shift kit, 2.5" flowmaster 80 exhaust, 17" Michelin Pilot Sport A/S, Poly sway bar bushings, Slotted Bradi rotors, AFBeefcake powdercoated calipers, 97 grill, and a huge set of air horns. 300,000 miles and counting 92 Ebony LS-L. ecutune stage1v4, motorsport 1pc pulley. Garage Queen - sold to Dad in upstate NY 155,000 miles 19 Subaru Ascent Premium - -Hers !. 89 DL 4x4 little red wagon - a.k.a. The immortal suby. 275k R.I.P. |
#15
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Quote:
I think the "Power" light has to come on in order for the AC to disengage itself. Dave |
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