Recent Topics
A3/B3 vs A3/B4, big difference or irrelevant?
by FordCapriDriver
17 minutes 10 seconds ago
2003 Honda power steering problem
by hogpops
23 minutes 59 seconds ago
Public Service Announcement: Flush Your HW Heater
by gathermewool
28 minutes 5 seconds ago
Fellow 2AZ-FE toyota owners: what oil are you usin
by car51
31 minutes 47 seconds ago
Castrol 0W40 vs 5W40??
by Realfine69
50 minutes 54 seconds ago
Paint impurities on a new car
by Quattro Pete
Today at 02:49 PM
2014 Ram wheel FIT on a 2005 Ram?
by SumpChump
Today at 02:41 PM
Do people buy from telemarketers?
by Chris142
Today at 02:06 PM
TGMO 0W20, 8100km/5mo, 2013 Lexus GS350AWD 118K KM
by David_Corbett
Today at 01:54 PM
Sonoma Raceway
by Warstud
Today at 01:51 PM
Zipcode error
by aquariuscsm
Today at 01:36 PM
NHRA drag racing Racing question??
by daddi
Today at 01:33 PM
Milesyn 5w30 5 gal pails $50.94 w/prime
by Samrsnow
Today at 01:20 PM
Removing Broken Bathtub Drain
by Warstud
Today at 01:15 PM
Buffer Pads
by TheLawnRanger
Today at 01:10 PM
Recommend an oil to me... Pennz, M1, Castrol...?
by chinee
Today at 12:39 PM
Filter for Hydro Gear ZT2800 - Toyota???
by Lancruza
Today at 12:39 PM
Motul 5W30, 3000KM/12 mo, 06 Acura RSX-S 161K KM
by lemaitrix
Today at 12:38 PM
DeWalt dcf887b 3spd impact driver
by JC1
Today at 12:34 PM
Grit guard wash board
by JC1
Today at 12:22 PM
Newest Members
crrider, EdDmax, 2018matto, Lancruza, IanSampson
65312 Registered Users
Who's Online
96 registered (87sammy, aquariuscsm, BAJA_05, 1JZ_E46, Artem, Astro14, 6 invisible), 1543 Guests and 34 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65312 Members
67 Forums
285926 Topics
4771493 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4496599 - 08/24/17 02:45 AM How often should an AC compressor cycle on and off
Chris B. Offline


Registered: 03/16/03
Posts: 3461
Loc: Colorado
My 2012 Honda Accord V6 AC compressor was cycling on and off every 6 seconds which seemed like a lot but blew ice cold air. I had it in to the dealer for some maintenance and had them check it out. They said it was low on freon and recharged the system. Now it cycles exactly every 6 seconds and then every 14 seconds. Does this sound normal? The dealer service advisor couldn't tell me exactly how often it should cycle on and off. Also how often should the AC on a 1997 GMC Sierra with the Vortec 350 V8 cycle on and off? Thanks!

Top
#4496610 - 08/24/17 04:19 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17795
Loc: PNW
If the refrigerant is charged per spec and it's putting out good cold air, then I wouldn't worry about it.

Depending on the design of the AC system, and the cabin and anbient temperature as well as the AC setpoint temperature, all those variables will have an effect on the duty cycle of the compressor. So it could vary quite a bit, especially when it's trying to get to a steady state temperature of operation.

Top
#4496648 - 08/24/17 06:02 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
Char Baby Offline


Registered: 05/25/05
Posts: 10028
Loc: ROCHESTER, NY
*Is this something that your Accord is doing now or has it done this before?
*Does your Accord have "Climate Control HVAC System", as compared to the more simple On/Off HVAC system?

I have noticed that with "Climate Control", the A/C does seem(IMO) to cycle On & Off more frequently than a basic system. However, I don't know if it's just me noticing this, or just the vehicles that I have owned that are doing this.

This doesn't seem out of line to me unless your car didn't do this prior.


Edited by Char Baby (08/24/17 06:04 AM)
_________________________
"Retired"
'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'06 Mazda 3i 2.0L
'15 Nissan Altima 2.5 SV

Top
#4496655 - 08/24/17 06:22 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
Claud Offline


Registered: 02/11/14
Posts: 593
Loc: Margate England
Just a thought, Colorado is pretty high, maybe at lower elevations it would cycle in a different pattern?. I don't know, maybe thinner air means the condensor can't dissipate heat so well?.

Claud

Top
#4496683 - 08/24/17 07:14 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
Chris142 Offline


Registered: 06/05/03
Posts: 16841
Loc: Deplorable in apple valley, ca
Depends on temps and fan speed
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

Top
#4496688 - 08/24/17 07:17 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
Claud Offline


Registered: 02/11/14
Posts: 593
Loc: Margate England
Ok, given the same temps, fan speed will be a constant.

Claud.

Top
#4496743 - 08/24/17 08:34 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4860
Loc: Houston, Texas
Sounds normal. I know mine cycles on and off more frequently when in recirc mode. Like on 6 seconds off 6 seconds.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


Top
#4496781 - 08/24/17 08:55 AM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
Schmoe Offline


Registered: 05/12/03
Posts: 7256
Loc: Oklahoma
Depends on moisture in the air....that's how AC's work.
_________________________
01 Supercrew Lariat 4X4
06 Accord EX-L V6
14 CRV EX-L



Top
#4496866 - 08/24/17 10:36 AM Re: How often should an AC compressor cycle on and off [Re: Schmoe]
JHZR2 Offline



Registered: 12/14/02
Posts: 41802
Loc: New Jersey
Originally Posted By: Schmoe
Depends on moisture in the air....that's how AC's work.


I was going to say, isnt CO high and dry (lol)?

It sounds short to me, but if the conditions are right, it may be a couple control systems fighting each other.

This is a semi-mechanical system, not a dual zone digital control, right?

Top
#4496950 - 08/24/17 12:46 PM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
nthach Offline


Registered: 01/02/04
Posts: 3909
Loc: California
Depends on how much load is needed from the AC and the type of system. Some cars don't have clutched AC compressors and use a variable displacement system or a metering valve to adjust how much refrigerant is being compressed. On some cars - mostly the older Lexus LS400s and older GM cars(way before I was born) use EPR/POA valves and the compressor will always run as long as the AC is on.

I do notice automatic HVAC does cycle the compressor more, in most of those systems a photoelectric cell is feeding the HVAC control how much solar load is in the cabin(with the interior temp sensor).


Edited by nthach (08/24/17 12:50 PM)

Top
#4497221 - 08/24/17 06:30 PM Re: How often should an AC compressor cycle on and off [Re: Chris B.]
Chris B. Offline


Registered: 03/16/03
Posts: 3461
Loc: Colorado
Thanks gentlemen! Mine seems to behave the same way no matter how I have the system turned on. Recirc, Synced to both sides or any of the other settings. I honestly can't remember how it ran when new but I thought it cycles only a few times a minute but I'm probably wrong. Dealer just did a recharge saying it was low and they tested the system and checked for leaks but all was good to go they said so I'm happy!

Top