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weatherbill
Samba Member
Joined: May 15, 2007
Posts: 366
Location: Nashville
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 Posted: Mon Jun 01, 2009 2:22 pm Post subject: Why loosing power when AC is on |
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Why am I loosing power and acceleration when my Air Conditioning is on?
Is there an electrical part getting weak an dneeding replaced?
What can I do to improve this...
might it be a good idea anyways to replace old ignition coil with a high performance one?
has anyone done this? or anyone gone thru this? |
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son1caaron
Samba Member
Joined: May 31, 2008
Posts: 15
Location: Arlington Heights, IL
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| Posted: Mon Jun 01, 2009 2:35 pm Post subject: |
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I think loosing power while using the AC is pretty standard. Your engine only puts out so much power and when you turn the AC on it has to power the compressor as well so there isnt as much power available to propel you forward.
_________________
1987 2wd Westy w/ Ford Zetec Engine
Bostig install group 6
http://www.bostig.com |
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devesvws
Samba Member
Joined: January 05, 2004
Posts: 1540
Location: madison va
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Sodo
Samba Member
Joined: July 06, 2007
Posts: 10849
Location: Western WA
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| Posted: Mon Jun 01, 2009 6:39 pm Post subject: |
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| son1caaron wrote: |
| I think loosing power while using the AC is pretty standard. Your engine only puts out so much power and when you turn the AC on it has to power the compressor as well so there isnt as much power available to propel you forward. |
Yes this is true. If it takes 5 hp to run the air conditioning compressor then you have only 85 remaining, and that's at peak RPM 4100.
If you are running at 3000 rpm where you have say,,,,70 HP then the available HP remaining to push the car drops to 65.
The only 'fix' for this is to increase horsepower or change the weather.
_________________
'90 Westy EJ25, NEW oil rings (!) 2Peloquins, 3knobs, SyncroShop pressure-oiled pinion-bearing & GT mainshaft, filtered, cooled gearbox.
'87 Tintop w 47k 53k, '12 SmallCar EJ25, cooled filtered original gearbox
....KTMs, GasGas, SPOT mtb |
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?Waldo?
Samba Member
Joined: February 22, 2006
Posts: 10136
Location: Where?
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| Posted: Mon Jun 01, 2009 6:40 pm Post subject: |
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You could add a switch to deactivate the compressor clutch under full throttle.
Andrew
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I am a high-functioning autistic into VW diesels and Vanagons along with other things that are unrelated to this site. |
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weatherbill
Samba Member
Joined: May 15, 2007
Posts: 366
Location: Nashville
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| Posted: Tue Jun 02, 2009 1:50 am Post subject: |
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| thanx. I didn't know if that was normal or not. |
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funagon
Samba Member
Joined: March 09, 2006
Posts: 1308
Location: SLC, UT
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| Posted: Tue Jun 02, 2009 3:20 pm Post subject: |
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| Andrew A. Libby wrote: |
You could add a switch to deactivate the compressor clutch under full throttle.
Andrew |
I don't know if you were just being funny but that sounds like a great idea to me.
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1990 GL 7-passenger
2.2 liter WBX |
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Dogpilot
Samba Member
Joined: October 03, 2005
Posts: 4205
Location: Flagstaff, AZ
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| Posted: Tue Jun 02, 2009 3:24 pm Post subject: |
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We have signs all over Arizona at the steep grades telling you to turn your AC off. Wonder if that was meant for the Vanagons only?
_________________
Geology with a Syncro rocks!
86 Syncro Westy AKA "The Bughunter"
98 Disco I
08 Range Rover SC
08 VW Rabbit S
1951 O-1G |
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foodeater
Samba Member
Joined: July 13, 2007
Posts: 1318
Location: Newburgh, NY
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| Posted: Tue Jun 02, 2009 3:25 pm Post subject: |
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| funagon wrote: |
| Andrew A. Libby wrote: |
You could add a switch to deactivate the compressor clutch under full throttle.
Andrew |
I don't know if you were just being funny but that sounds like a great idea to me. |
Its pretty common on a lot of newer cars to have the compressor disengage under full throttle. Seems like it might be pretty easy to rig something up for a vanagon.
_________________
89 Bluestar-2.5 Subaru Powered-RIP
'84 Westy Tiico-daily driver-sold
'82 Caddy diesel-sold
'87 Vanagon Syncro-RIP
'81 diesel rabbit-sold
'82 Vanagon auto-RIP |
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Dogpilot
Samba Member
Joined: October 03, 2005
Posts: 4205
Location: Flagstaff, AZ
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| Posted: Tue Jun 02, 2009 3:26 pm Post subject: |
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We have signs all over Arizona at the steep grades telling you to turn your AC off. Wonder if that was meant for the Vanagons only?
_________________
Geology with a Syncro rocks!
86 Syncro Westy AKA "The Bughunter"
98 Disco I
08 Range Rover SC
08 VW Rabbit S
1951 O-1G |
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