HVAC AC problems.. with my Legend

Discussion in '4th Generation (2004-2012) [Acura RL]' started by kentlegend, Saturday 4th Jun, 2016.

  1. kentlegend Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Vasilis Kent
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    Hello guys,

    Since I got the car a few months ago, the AC was not working.
    I thought it was a case of regassing, so went to regas it and the AC was still not coming on. The radiator fans came on, but the compressor would not engadge
    After looking around we found out the magnet/clutch was shot. So I got a use compressor complete from eBay.
    Checking a bit more and we found out not only the clutch was shot on my car , but the compressor was seized solid.
    So we replaced the whole thing this morning with the complete one received from Ebay.
    We put everything together and then took it to a kwikfit close by to my friend's to regas it.
    They claimed they put in 725gr of gas but although everything works as it should be no cold air is coming out.
    I checked all the valves, fuses, fans, clutch, compressor... everything is working as it should be... but no cold air. The AC pipes get warm instead of cold.
    My mechanic friend who assisted with the whole replacement believes Kwikfit did not put the correct gas amount it ... it has something in there as the whole thing engadges. But not enough to bring cold air. It only bring luke air out.
    I have called my local kwikfit and they are ok with me taking the car there tomorrow and check the whole gas and redo it for me free of charge as the first kwikfit should not have charged me apparently. (Since there was no result on the gassing they did).

    Any opinions guys? We don't think the used compressor is shot... as there is no nasty noises or anything "bad" coming from that end. The used compressor is in way much better condition that the one I took out of my car.

    Cheers
    Vasilis.
     
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  2. Ichiban Founder Staff Team

    England CJ Leeds
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    I am going to be brief without me fuming with what I have just read :disagree:, mate you take you cars to idiots with no idea how much refrigerant to fill in the car you will have these issues.

    The your expensive prestige Honda Legend takes between 400 to 500 grams of aircon gas, do you know if overcharge the system; the compressor will be damaged.THAT a fact
    Honda dealers would have been cheaper they have the right equipment with appropriate aircon unit which would measure for your refrigerant. good luck mate you will need it.
     
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  3. kentlegend Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Vasilis Kent
    68
    33
    Hi Ichiban,

    Well this was just a quick check to see of what happened with regards to if the system worked or not. I have since I posted the post downloaded your very helpful sheet of specs and there it states everything with regards to the quantities etc.
    Honda is next to useless at the moment (well in my area at least... waiting time for the service department is minimum of 28days!!) So I have no choise other than take it to a 3rd party.
    Since this morning I do not a lot more my self about AC systems lol thant what I knew yesterday.

    Hopefully no damage happened on my used compressor as it was only tried for about 5mins in total... so let's see tomorrow at my local Kwikfit.
     
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  4. Ichiban Founder Staff Team

    England CJ Leeds
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    5 minutes of high amount of gas will break and smash a lot of things what happens to a balloon when you over fill it?
     
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  5. kentlegend Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Vasilis Kent
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    Well if anything broke... then Kwifit is to fix ... :Smile:
     
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  6. ArcticFire-Account Closed Banned Getting Started

    Scotland Graham Scotland
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    Have the relays been checked?
     
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  7. kentlegend Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Vasilis Kent
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    from what I see in the system there is only one relay on the right side of the engine and this clicking and working well.
     
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  8. jimjams Expert Advisor ★ ★ ★ ★ ★

    United Kingdom nobody zoned
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    If there is too much gas the over-pressure valve inside the compressor will vent making a very loud noise.

    But if you can hear a relay clicking, you should certainly be able to hear the compressor as well.

    If you cannot hear the compressor then you need to identify the location of the relay and be 100% sure that it is the correct relay and that it is working.

    If you can hear the compressor then the condenser is probably perished, a perished condenser does not leak gas, it is just very inefficient at losing heat (same as a perished engine radiator).
     
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  9. kentlegend Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Vasilis Kent
    68
    33
    Hi Jimjams, the relay is clicking, the compressor is engadging I can see it kicking in and spinning.
    So it might be the condenser then ...
    But before I do anything else, I want to see today how much gas they put in yesterday and fill it up today with the correct specs.
    If that doesn't work then I will start looking for a new condenser.
     
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    jimjams likes this.
  10. jimjams Expert Advisor ★ ★ ★ ★ ★

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    ok, that's good.

    As I say, if there is too much refrigerant, there is an over-pressure safety valve inside the compressor (for obvious reasons), when they blow, they make an extremely loud noise, you would definitely hear it.

    Using a torch you should be able to look through the grill, and any other vents in the bumper, at the condenser. A perished condenser looks like it's going to fall to bits, usually the lower half. You would see a few small gaps where some of the aluminium fins have already fallen out, and the adjacent fins will look bent and loose. This means that large amounts are also loose but not yet fallen out, when loose they no longer conduct heat away, so the compressed gas cannot lose sufficient heat and become liquid, so the system does not work properly.

    The end effect of a perished condenser is same effect as having low refrigerant i.e. poor efficiency.
     
    Last edited: Tuesday 7th Jun, 2016
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  11. stuscrv Valued Contributor ★ ★ ★ ☆ ☆

    Spain stu lanzarote
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    Personally I wouldn't let Q F change my shoes! - - good advice gents
     
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  12. jimjams Expert Advisor ★ ★ ★ ★ ★

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    but tbh I doubt if it's down to anything they've done
     
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  13. stuscrv Valued Contributor ★ ★ ★ ☆ ☆

    Spain stu lanzarote
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    I agree jimjams but would hardly call them experts, my local tyre shop does re gassing now. Their friends of mine and openly told me they haven't a clue !
    Its just a machine they wire up to your car then relieve you of £49-99 !
    If you had a dodgey pace maker ( god forbid ) would you go and see your mate who knows a bit about electrics or your doctor ?
    Things like air con should be left to the experts who've trained for years and have all the right gear.
     
  14. jimjams Expert Advisor ★ ★ ★ ★ ★

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    We'll have to agree to disagree on this. Halfords Autocentre did mine after I renewed the condenser on my Accord.
     
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  15. stuscrv Valued Contributor ★ ★ ★ ☆ ☆

    Spain stu lanzarote
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    I'm not having a go at Q F I'm sure their good at something ? Lol, I just meant I wouldn't call them air con experts. Even on my old heap I use a mobile specialist who only do air con day in day out. They use the correct mixture of gas/oils which is vital in lubricating the system, also they use UV dyes to detect further leaks which in my last service was the case.
    They told me I had a small leak in the condenser and felt it wasn't worth re gassing - - no charge ( money )
     
  16. jimjams Expert Advisor ★ ★ ★ ★ ★

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    aircon isn't worth arguing over tbh
     
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  17. stuscrv Valued Contributor ★ ★ ★ ☆ ☆

    Spain stu lanzarote
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    I agree, its a friendly discussion - people read and make up their own minds, any how as mine doesn't work now am I loosing MPG etc by the belt turning the compressor or is the free wheeling negligable ?
    I've seen new condensors on eBay for £50 but can't warrant the outlay as need other repairs !
     
  18. jimjams Expert Advisor ★ ★ ★ ★ ★

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    no, you only lose HP (hence MPG) when the compressor is compressing, the belt is only turning a pulley which is disconnected from the compressor (because the electric clutch is disengaged)
     
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  19. stuscrv Valued Contributor ★ ★ ★ ☆ ☆

    Spain stu lanzarote
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    Thought as much - thanks - - I need all of my massive 128 HP when new !
     
  20. kentlegend Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Vasilis Kent
    68
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    lol... :Smile: the only reason I am bothered is that I am leaving for my European drive on Friday and I cannot imagine to drive without AC!! lol
    Either than that I am not bothered about th £49 or £50 I just want it to work.
    Honda is next to useless ... as their appointments are so far away, pointless to bear in mind.
    I used a mobile specialist ... and he was the one who diagnosed initially about the fault with the compressor. hence I got my used one on Ebay the first day.
    I only used Kfit as a quick solution to see if the new setup is working... however they managed to mess up!
    Will the overpressurise valve get off once? or everytime the AC is coming to life? I was not present when they switched it on the first time ... so not sure if it made the loud noise indeed?
     
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