loks Posted November 25, 2012 Share Posted November 25, 2012 Can anyone post the inner workings of the aircon pump set up? My car seems to be eating AC pumps as of late or I have just been really unlucky with 2x secondhand replacements? Is there anyway of getting oil stavation or somthing that could seize them up? The condition I get is that under load when moving with the AC on, the car will seem to "seize up", no power but engine still running, the warning light will come and the engine will either cut out or burst back into life! If I turn off the A/C button all is well and no problem. Thanks for any advise here, as my 2 mechanics here have been unable to help me with the problem. Having no aircon in Hong Kong is not an option. Cheers. Quote Link to comment Share on other sites More sharing options...
loks Posted November 27, 2012 Author Share Posted November 27, 2012 Bump - anyone? I don't want to fork out HK$16k (GBP1,400) for a new aircon pump and find out that it could be an external force that is the real reason why the 3x pumps have already failed on me recently! Thanks. Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted November 27, 2012 Share Posted November 27, 2012 Can you not get it reconditioned ? I got a recon from the states a few years ago which was cheaper than getting here. Quote Link to comment Share on other sites More sharing options...
loks Posted November 27, 2012 Author Share Posted November 27, 2012 Not really thought of this option to be honest. I have no idea if such a service is actually available locally here. Will have a look around. Out of interest, where in the states did you source this option (E-Bay?) - was it from a supplier or an individual enthuiast? I am quite reluctant to spend any more money on this part until I am 100% sure that it is the solution to my existing problem. Besides paying for a new pump that is probably equal to half the value of the car in it's current condition, would not go down too well with missus Quote Link to comment Share on other sites More sharing options...
Scooter Posted November 27, 2012 Share Posted November 27, 2012 How stiff is the inner section of the pump when you reach down and try and turn it by hand? How long did the other two replacements last, were they both fine for a while before going the same way? did you get good aircon performance when all was ok with them, do you have one of the old seized ones still? Quote Link to comment Share on other sites More sharing options...
Nic Posted November 27, 2012 Share Posted November 27, 2012 Hey Dave, I've sent you an email with a copy of the AC service manual and some other details, sorry don't know much about the AC so can't really help with advice, hope you can get it sorted. Quote Link to comment Share on other sites More sharing options...
Nic Posted November 27, 2012 Share Posted November 27, 2012 (edited) Just noticed there's a AC pump up for sale at the moment here http://www.mkivsupra.net/vbb/showthread.php?280992-Air-Con-Pump or you could drop Keron a pm he'll probably be able to supply you one off a breaker. Is it for the Aristo? I assume the pump will be the same but hopefully someone here can confirm. Edited November 27, 2012 by Nic (see edit history) Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted November 27, 2012 Share Posted November 27, 2012 Not really thought of this option to be honest. I have no idea if such a service is actually available locally here. Will have a look around. Out of interest, where in the states did you source this option (E-Bay?) - was it from a supplier or an individual enthuiast? I am quite reluctant to spend any more money on this part until I am 100% sure that it is the solution to my existing problem. Besides paying for a new pump that is probably equal to half the value of the car in it's current condition, would not go down too well with missus Yeh eBay mate When you have had it refilled they did put the right oil and enough in ? Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted November 27, 2012 Share Posted November 27, 2012 i have one cheap ill send out Quote Link to comment Share on other sites More sharing options...
loks Posted November 28, 2012 Author Share Posted November 28, 2012 (edited) How stiff is the inner section of the pump when you reach down and try and turn it by hand? How long did the other two replacements last, were they both fine for a while before going the same way? did you get good aircon performance when all was ok with them, do you have one of the old seized ones still? Will let you know about the stiffness after this weekend. I guess both replacement units were on the car a couple of weeks (month+?) before I noticed the problem had come back again. Unfortunately I do not have the old units and my mechanic does not have them either anymore. Hey Dave, I've sent you an email with a copy of the AC service manual and some other details, sorry don't know much about the AC so can't really help with advice, hope you can get it sorted. Got the mail and service manual. Thanks. After leafing through all the 111 pages I also have a new thought that the problem could be part electrical? Shoot me down in flames but after reading through this repair manual and checking the troubleshoot guide page. There is an interesting line there: "No engine idle up when the A/C switch ON" and it points to possible problem with either the A/C amplifier or a wiring/wiring connection issue. Now if this idle up is not happening correctly (if at all as I can't recall it happening now), could this feedback into the system and cause the hesitation/overload of pump. Therefore engine notices this and either hits a safe mode or cuts the engine? I can understand this happening when stopped at the lights and does actually cause cut out when the A/C kicks in BUT does not explain when you are driving and happening when under slight load at slow speed - does it still need this idle up function to operate propoerly at this time? Next question is - where do I find this A/C amplifier to test it? It is not given on the repair manual anywhere and I have searched as much as I can whilst at work. As I say above, shoot me down if I'm barking up the wrong tree. I can be a numpty when it comes to these sort of things sometimes. Just noticed there's a AC pump up for sale at the moment here http://www.mkivsupra.net/vbb/showthread.php?280992-Air-Con-Pump or you could drop Keron a pm he'll probably be able to supply you one off a breaker. Is it for the Aristo? I assume the pump will be the same but hopefully someone here can confirm. Previous A/C pump I had shipped was from Keron (UK) and I quite confident that he shipped me a decent condition one. However with the feedback I feel that other factors may have contributed to its demise (or not as the case may be!) - see below. It is not for the Aristo, as that little baby left me some time ago - it is for my old Supra. Meanwhile on another thread, far far away... the Aristo suffered a similar "death" of the gearbox which in the end, turned out to be an electrical problem, by the new owner. Yeh eBay mate When you have had it refilled they did put the right oil and enough in ? That really is a biggy for me as i have no idea whether my mechanic has the savvy to do this AND "at the moment" top of my list for the possible failure reasons. I also have trouble asking him with my poor broken cantonese. He does not speak English and just smiles when I hand over the cash. i have one cheap ill send out Excellent. What sort of condition is it in? PM me please if you do not wish to put the price of it up here. I have already had one shipped from the UK before, so I have a good idea the of shipping cost to HK. Edited November 28, 2012 by loks (see edit history) Quote Link to comment Share on other sites More sharing options...
loks Posted December 17, 2012 Author Share Posted December 17, 2012 Well... had an aircon specialist have a look at the compressor this weekend and apparently it is in good working order and doesn't need replacing (i.e. no play, etc.). However he did comment that there was far too much oil in it. So drained it, replaced with the correct Toyota R134 oil and regassed. Everything seemed hunky dory until Sunday morning, when I went for a run from cold and the problem reared it's ugly head again. It remained the same even after the car had warmed up fully. Mechanically we seemed to done everything by the book now - where would I start looking for a possible electrical problem, as nothing is coming up on the fault codes? Help, I'm drowning. Quote Link to comment Share on other sites More sharing options...
Yakky Posted December 19, 2012 Share Posted December 19, 2012 System is swarfed - full of bits of metal. There should be a swarf filter somewhere in one of the pipes. Find a decent mechanic to sort - they'll know and charge you for the pipe and a system flush. Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted December 19, 2012 Share Posted December 19, 2012 Go back to your air con specialist Quote Link to comment Share on other sites More sharing options...
loks Posted December 19, 2012 Author Share Posted December 19, 2012 Actually had the filter cleaned by the aircon guy last time but seems not to have helped much. In with another mechanic now (3rd one!), who I'm assured knows his Jap cars... I won't hold my breath but will cross my fingers. Got to have faith. Quote Link to comment Share on other sites More sharing options...
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