Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk2 2008-2015 => Topic started by: Pine on February 21, 2018, 05:09:38 PM
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I leave my CC set to 20 and have it continuously on the lowest fan speed. I find that continuous ventilation is needed to prevent window misting. However on the lowest fan speed it never really warms the cabin but I keep it low as I don’t want to suck in the traffic fumes. A friend who I often give a lift to keeps telling me to put it on fully auto and let the fan do its own thing, the pollen filter will clean the air. I thought the pollen filter only removed dust and pollen.
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yes the pollen filter only stops pollen and dust entering the cabin. you need a cabin filter with activated charcoal built in if you want to stop fumes too....but im not sure if they do them for jazz's. i had one on my ford puma.
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Corteco make a carbon activated filter Part No 8001184. Any decent motor factor who uses FPS as a supplier should be able to get one from them for you.
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It maybe 20 is a little high more especially with very low temperatures outside. I leave ours on 17 on two bar setting for the fan and IF it does start to mist up just push the 'screen' button in for a few minutes which usually clears the side windows. When the screen button is operated the fan runs at a much higher speed.
I use the recirculation button for a short while on first moving off. This allows the cabin to warm up a bit. Apart from that I leave it all to it's own devices.
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Having had her indoors complain about cold draughts in both Jazz and Civic I decided to do an experiment. I have a digital thermometer with the sensor on the end of a cable and I dropped the sensor into the vent to measure actual air temp coming out of vent. Desired temp set to 20deg outside temp was about 6degC and air temp gradually rose for first half to one mile, it got up to over 50degC for a couple of miles and then started dropping, after about 8 miles it was approaching set temp 20deg but as interior of car got up above 18 or 19 the incoming air temp started to drop below 20deg and actually ended up nearer 16deg, and that is when my wife started to notice 'draughts' which were actually colder air from vents blowing into warmer cabin. I can understand what she complains about now, as the cabin approaches set temp the air from vents cools down, and she feels this as draughts of colder air. If you leave climate control in full auto the fan speed drops as set temp is approaching and the draughts are less obvious, but cabin can start to feel stuffy when fan almost off. I thought air from vents would never fall below set temp, but if any sun around or car full of people cabin temperature can rise above set temp and it switches to colder air flow. As far as I can see cabin temp sensor is behind a little grille in the dash to left of steering wheel column.
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Culzeans explanation is interesting. However I have not noticed the cold draught situation. On very rare occasions my Wife has commented on an occasional cold draught and when I have checked there is indeed cold air coming in when not expected. She suffers with Reynards disease. Her finger tips and toes are constantly cold and VERY susceptible to the cold. Still wearing her fur coat from deepest Marks and Spencers. Gloves don't usually come off until the summer.
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I don't use the climate control in 'auto' because, in my opinion, it doesn't put the air where I want it and at a fan speed that does any good. The temperature is still controlled when the system is set to manual.
In 'auto' the fan speed shortly after start up goes down to one and the air is directed to feet only. The screen soon mists up on damp days.
In the winter I have the air directed to 'screen and feet' and the fan speed on three bars. The temperature is set at 23 but we do not sit in the car with our outdoor clothes on. When the 'cold' light goes out the fan speed goes up to four bars to rapidly warm the car up then back down to three bars. The windows never mist up.
In summer the air is directed to 'face and feet' and the temperature to whatever is comfortable.
The aircon is on all the time.
Vic.
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I just leave on auto, and let it do its job,never had a problem.
Plasma.
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I also just leave it on auto with a temperature that is comfortable, usually 20 or 21 and let it do its job, also never had a problem. It's called climate control because that is exactly what it does.
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I'm exactly the same as ColinS, just set it on Auto at 20-21c and forget it. The screen never mists up.
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I set mine to Auto but vary temperature.
Winter driving evening 24C. Winter driving back from yoga 18C.
Spring 21C. Back from yoga 18C.
Summer? What is that? Varies.
Screen mists up in winter from cold..10 second blast from screen button solves that.
No issues.
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I should have persevered more with the aircon in the 'Auto' setting. I gave it a go in the recent warm weather and was happy with results so I will leave it in 'Auto' and we will see what it's like in the autumn/winter.
Vic.
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I don't think the the cooled air from my air con is as cool as it should be so I am thinking of having it serviced. I have looked at a couple of websites and they refer to air con re-gas and air con servicing, is there a difference or are they different terms for the same thing? And what cost should I expect?
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I don't think the the cooled air from my air con is as cool as it should be so I am thinking of having it serviced. I have looked at a couple of websites and they refer to air con re-gas and air con servicing, is there a difference or are they different terms for the same thing? And what cost should I expect?
I have never had A/C serviced or regassed, buy a refill kit and put a bit more gas in, every system leaks a bit. Normally a refill kit used for topping up lasts us about 5 years for two cars, but you have to be careful not to overfill system as it can make it less efficient or even damage it.
https://www.ebay.co.uk/p/Car-Air-Con-Kit-Top-up-Aircon-Conditioning-Recharge-Refill-DIY-18oz-Leak-Sealer/1465179408?iid=182566153002&chn=ps&adgroupid=52130532935&rlsatarget=pla-411617460180&abcId=1133946&adtype=pla&merchantid=7261704&poi=&googleloc=1007151&device=c&campaignid=1057748120&crdt=0
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The single best thing you can do to preserve the gas in your aircon is to use it regularly, even in winter. If you make sure you use it at least once a week, this circulates the PAG oil throughout the system, wetting the seals and o-rings and minimising coolant leakage.
The only problem with top up kits is that you have no idea how much oil is in there. Depending where the system is leaking, you could be losing predominantly gas, or you could be losing predominantly oil. You are adding more oil with a top up when the system doesn't need it, reducing cooling ability, or be left with too little, which could spell disaster for the compressor.
If you don't know what the situation is exactly, you would be better off with a full vacuum and regas, so that the oil can be recovered and weighed, and the correct amount of oil and gas replaced. KwikFit and similar garages often do offers at around £25-£30, with no charge at all if there's no improvement. I wouldn't normally recommend places like KwikFit for anything, but the automatic regas stations they use are virtually idiot proof.
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Inspired by this thread, I thought I'd try the climate control on "auto" in the recent couple of warm days.
In the past I've just used the air con manually and used the screen setting to clear the windows in the winter. I've also tried to run the aircon for a few minutes each week to keep the seals moist.
Anyway when I switched to "auto" I was a bit surprised when it initially used the recirculation of air from inside the car which was a setting I very rarely used. I was less pleasantly surprised by a rather unpleasant smell from the system.
I switched to the setting using external air and the smell went away.
Today I persisted with letting the system sort itself out. Eventually it switched to external air and the smell went away.
It would seem that something unpleasant is lurking in the pipes.
Has anybody any experience of cleaning out the heating/cooling system?
Also has anybody experimented with the effect of the Jazz aircon on mpg?
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You can buy aerosol cans of disinfectant specially made to kill the mould and bacteria that like to breed in the moist heat exchanger area, you press top down and leave them in the car with aircon on recirculation mode for a while. Best plan to avoid smelly aircon is to switch aircon off about a mile before you get to where you are going to allow system to warm up a bit and dry out. For that reason I avoid auto and use aircon manually. The smell does not come from cabin filter as that is always in the airflow so would smell all the time.
In bad cases you may need to do the disinfecting more than once (leave a day or so between treatments), most of our cars ( 2 to 3 years old when bought from Honda dealer) have had the problem, but after a couple of cleanings and a bit of care while using aircon they did not happen afterwards.
https://www.amazon.co.uk/s/?ie=UTF8&keywords=air+conditioning+cleaner&index=aps&tag=googhydr-21&ref=pd_sl_2l4h8jn51k_e&adgrpid=53565993832&hvpone=&hvptwo=&hvadid=259100435644&hvpos=1t2&hvnetw=g&hvrand=1546667525280689126&hvqmt=e&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1007151&hvtargid=kwd-304754257132
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I never turn my aircon off and do not have problems with smelly aircon but agree that smells are a known problem. Where it comes from is anybodies guess as conditioned air is dry, hence the puddles of water that collect under a parked car that has its aircon on.
As for mpg, don't worry about it, the effect is negligible. My mpg with the aircon all the time averages 49. However because the greatest effect would be at very wide throttle openings such as overtaking, modern cars shut the compressor down at very wide throttle openings.
Vic.
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I never turn my aircon off and do not have problems with smelly aircon but agree that smells are a known problem. Where it comes from is anybodies guess as conditioned air is dry, hence the puddles of water that collect under a parked car that has its aircon on.
As for mpg, don't worry about it, the effect is negligible. My mpg with the aircon all the time averages 49. However because the greatest effect would be at very wide throttle openings such as overtaking, modern cars shut the compressor down at very wide throttle openings.
Vic.
When engine is turned off the aircon 'cold side' heat exchanger is still cold and quickly attracts condensation (you can sometime see it when you start engine and windscreen mists up for a short time as the dampness on heat exchanger gets blown through system before aircon gets heat exchanger cool enough to trap the moisture), mould and bacteria love damp conditions. Switching aircon off and still allowing air to blow through exchanger allows it to warm up to ambient and dry out.
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Thanks for the replies. I intend to buy one of the products as reccommended by Culzean. There seem to be a large number of similar products available. Anybody got any reccommendations?
Efficiency is the most important criterion but I'm not too keen on the air freshener smell as promoted by used car salesmen or the deodorent smell of a gym changing room after it's been used by a young football team.
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This is what I used.
https://www.racshop.co.uk/autoglym-air-con-cleaner.html (https://www.racshop.co.uk/autoglym-air-con-cleaner.html)
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i have used various air con cleaners over the years. all seem to do the same thing.
the ones that stood out where the ones made by 'Comma' and 'Simoniz'.
the 'Simoniz' one is available from Wilko online, maybe in store but I just order online to collect in store especially when its on offer
http://www.wilko.com/car-cleaning/simoniz-air-con-refresh-150ml/invt/0450091