Help! A/c not working
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Thread: Help! A/c not working

  1. #1
    Its been in the 90s here for the past week and a half and its not showing signs of getting cooler.

    I have been trying to get the air working in my 9-5, and I do not think the compressor is engaging.

    I have checked the refrigerant level (has enough) and fuses / relays.

    Is there a way to manually engage the compressor? or anything else I can check before looking into replacing it?

    Ive heard that compressors are a weak point but want to rule out the simple and cheap things that could be a problem.

    Its a 1999 9-5 2.3T Auto

    Thanks!

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  3. #2
    Scratch that, the compressor is engaging, but no cold air.

    I did check the climate control codes and got the 08, which I knew

    drivers side gives off hot air, passenger side is lukewarm.

    could it be the refrigerant is not good anymore? all other cars ive had the compressor would not engage if it was too low but unsure if its possibly just lost its power.


  4. #3
    Saabisti
    Join Date
    Nov 2009
    Location
    thame,uk
    Posts
    115
    Its been in the 90s here for the past week and a half and its not showing signs of getting cooler.

    I have been trying to get the air working in my 9-5, and I do not think the compressor is engaging.

    I have checked the refrigerant level (has enough) and fuses / relays.

    Is there a way to manually engage the compressor? or anything else I can check before looking into replacing it?

    Ive heard that compressors are a weak point but want to rule out the simple and cheap things that could be a problem.

    Its a 1999 9-5 2.3T Auto

    Thanks![/b]

  5. #4
    Saab Junior
    Join Date
    Oct 2009
    Location
    Exmouth, Devon, United Kingdom
    Posts
    29
    As a first action I would seriously look at getting it re-gassed.

    It may be that the system has a leak - so make sure that they add a "leak detector" to the oil when re-gassing.

    FWIW I had my 9-5 Griffin ('99 MY) re-gassed last year at Kwik Fit in Exeter for the princely sum of 40.

    I'm not a fan of main dealer pricing for work on my Old Gal and having checked prices at quite a few garages, A/C specialists, and even a couple of mobile guys, 40 was a very good deal.

    Before I hear the howls of derision from fellow saabers - I know not everyone has a good experience with the stack 'em high sell 'em cheap type of garage - however ALL they do is connect the A/C up to a machine, feed in the details of the car (from which the machine knows how much oil and refrigerant should be in the system) and press "Start". It's then a case of waiting about 1.5 hrs while the machine vacuums out the system (incidentally it tells you how much refrigerant and oil is still in there) Vacuum tests it for leaks (I'm told that these are not greatly reliable unless you've got a serious leak) and subsequently refills it with the correct amount of oil and refrigerant. Simples!

    Incidentally on Griffin one of the ports is behind the RHS headlamp and is MUCH easier to access if the healamp is removed first. The other is behind the LHS of the grill - both as viewed from the drivers seat.

    Good luck.

    BTW I've also got the dreaded false siren alarm problem - BEWARE removing fuse 14 to stop the siren waking the neigbours ALSO kills the A/C compressor!!! - You have been warned

  6. #5
    Thanks for the reply, ill have to see who can charge the a/c system near here. Is there a way to remove the refridgerant yourself or is it too risky or bad for the earth?

    Most places around here want well over $100 to open the hood if its a/c related but if I have to then ill go that route.

    I have not removed any fuses, the alarm problem has never re occurred. Thanks for the heads up!

  7. #6
    Saab Junior
    Join Date
    Oct 2009
    Location
    Exmouth, Devon, United Kingdom
    Posts
    29
    Whilst there are DIY A/C kits around I would NOT recommend them.

    A/C works under high pressure - you don't wan to to muck about with it.

    Sometimes the one man band experts can be good value AND very knowledgeable as it's often all they do...

  8. #7
    BTW I've also got the dreaded false siren alarm problem - BEWARE removing fuse 14 to stop the siren waking the neigbours ALSO kills the A/C compressor!!! - You have been warned[/b]
    When you say 'kills' it, you mean switches it off, or damages it?

  9. #8
    It will switch it off.
    Fuse 14 is the fuse for the engine ecu. The engine ecu is what grounds the a/c relay to click the compressor in. So without fuse 14 your compressor won't engage.

  10. #9
    Banned
    Join Date
    Jul 2004
    Location
    Wooburn Moor
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    693
    Ryan, a few questions/ideas.

    Firstly, you initially said you had checked the refrigerant level, and it 'had enough'. What check did you do?

    Secondly, with both sides set to 'Lo', is there a difference in the air temp from the driver's and passenger's side front vents?

    Thirdly, again with both set to 'Lo', is the air coming out of either set of vents cooler than the ambient air outside?
    If so, you're getting SOME cooling, but not enough, which would suggest low refrigerant levels.

    Do you get a moaning/groaning noise, most noticeable at idle, which goes away if you switch to 'econ' (i.e. switch off the aircon compressor)? Mine ('03 Aero) did this; topping up cured it.

    If you can find the aircon LP (low pressure) port (see a thread I started on this about a week or ten days ago), you can top up the system yourself with R134a; there are plenty of recharge kits on the 'Bay, and they're pretty easy to use. All aircon systems lose a little refrigerant over time, and I've never had any problems topping them up on my cars over the years (Plymouth Satellite, Citroen CX, Rover 800, Mazda MX-3, and now the Aero).

    If the compressor is NOT engaging, you probaly have a significant leak and the refrigerant level is very low or nil. Topping up might work for a time, and it's cheaper than going to a specialist, but you're probably going to need a professional repair sooner rather than later.

    HTH. Give us some answers, and we'll take it from there.

    BOF

  11. #10
    ...Plymouth Satellite...[/b]
    Come on Dennis, you can't just throw that in and not expect to have to tell more!

  12. #11
    Air con code 8....

    http://www.saabscene.com/forum/lofiversion.../t31644457.html


    Follow the link! These codes are sent to help us by letting us know what is wrong.

  13. #12
    Saab Junior
    Join Date
    Oct 2009
    Location
    Exmouth, Devon, United Kingdom
    Posts
    29
    When you say 'kills' it, you mean switches it off, or damages it?[/b]
    I think Merve84 beat me to this one but without fuse 14 the a/c compressor will NOT engage.
    I was a bit embarrassed about that after my mechanic had spent 10 mins trying to find why no current was reaching the comp!

    So it's either a cool cabin and sleepless nights (the siren fault) or a good night's rest and sweating the proverbials off!

    And no - I don't fancy pulling the fuse at night putting it back every morning. I'll just have to get the damn siren fixed!

  14. #13
    Banned
    Join Date
    Jul 2004
    Location
    Wooburn Moor
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    693
    The Plymouth Satellite was an American car (an estate, actually) that I bought in 1979 to take to Germany on posting. Sixteen and a half feet long, six and a half feet wide, immediately christened "The Nimitz" by my colleagues & friends. It was a mid-size car by American standards.....

  15. #14
    Thanks for all the imput!

    Dennis,

    I removed the headlight to re-gas the system myself a few weeks ago when I was doing my other cars that needed it (I have several) and have done recharges on a few cars before but nothing more really. With the gauge on the refill port it was reading in the high green zone while running (normally means sufficient level)

    With both sides set to low, the air on drivers side is warm/hot (08 code, assuming the blend door is stuck open towards the heater core) and passenger side is cool, but it is of outside air (not chilled air).

    Switching it to hi leaves drivers the same and passenger side blazing hot (blend door working on that side)

    when turning on and off Econ the car engine rpms will surge a slight bit, no groaning or noises at all. This is why I originally thought it was not engaging, since the difference in engine rpm was almost unnoticeable.

    I looked under the car with Econ on, the end of the compressor does not spin. With econ off on lo the end of the compressor does spin.

    Ive never owned a satellite, but I did own a 69 Continental once with the suicide doors. It had to be over 20 feet long

  16. #15
    Ive never owned a satellite, but I did own a 69 Continental once with the suicide doors.[/b]
    I see GM has brought suicide doors back - in the new Meriva. Unfortunately they seem to have lost the practical advantage entirely, as it still has a (structurally necessary) central door post.

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