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Car Forum / BMW Cars / June 2006740 air conditioning
I have a 1998 740i - a great car in all respects except the AC. It has always seemed borderline to me. But, it was adequate until recently. The dealer put in 1/2 pound of coolant and told me that the AC was performing up to new car specifications. I don't buy it - something is not up to snuff. Any ideas? Thanks,  SignaturePeter Aitken >I have a 1998 740i - a great car in all respects except the AC. It has >always seemed borderline to me. But, it was adequate until recently. The [quoted text clipped - 3 lines] > >Any ideas? First thing is to put a thermometer probe into one of the dash vents with the AC cranked up to maximum. Run the car at a fast idle for 5 or 10 minutes. What does the thermometer say? SignatureDan. Never trust the dealer. I have been in circles with the BMW dealer and they can't ever give you an exact answer, plus BIG $$$$$ Talk to a shop that works on them everyday and make sure they specialize in just BMW's and/ or Mercedes. I have been doing that recently and is helping a lot more. just a tip. Bic > Talk to a shop that works on them everyday and make sure they > specialize in just BMW's and/ or Mercedes. I have been doing that > recently and is helping a lot more. > > just a tip. I would love to but AFAIK there is no such shop anywhere near me. Is there any online directory of independent BMW specialists? SignaturePeter Aitken > > Talk to a shop that works on them everyday and make sure they > > specialize in just BMW's and/ or Mercedes. I have been doing that [quoted text clipped - 4 lines] > I would love to but AFAIK there is no such shop anywhere near me. Is > there any online directory of independent BMW specialists? Maybe better to go to an aircon specialist than a BMW (and/or mercedes) specialist. On my 740 there are arms of a sort under the hood that open vents when the hood is closed. One of these is broken and I guess could affect aircon performance. > On my 740 there are arms of a sort under the hood that open vents when > the hood is closed. One of these is broken and I guess could affect > aircon performance. For sure. My wife's former X5's A/C unit would barely blow cold air from one of the ducts. One day I noticed that the other ducts were blowing hot air. Turned out to be a faulty air damper controller. BMW had to remove the dash to replace it. Eisboch www.eisboch.com > First thing is to put a thermometer probe into one of the dash vents > with the AC cranked up to maximum. Run the car at a fast idle for 5 > or 10 minutes. What does the thermometer say? I'll have to try - the dealer says the air coming out is 45 degrees, what it is supposed to be. SignaturePeter Aitken > I have a 1998 740i - a great car in all respects except the AC. It has > always seemed borderline to me. But, it was adequate until recently. The > dealer put in 1/2 pound of coolant and told me that the AC was > performing up to new car specifications. I don't buy it - something is > not up to snuff. My 98 740iL was the same way. I bought one of those AC recharger kits from Pepboys for about $25. The AC now blows colder than it ever has since I've owned the car. Kyle. 98 740iL 01 525i > My 98 740iL was the same way. I bought one of those AC recharger kits from > Pepboys for about $25. The AC now blows colder than it ever has since I've > owned the car. How difficult is the kit to use? I have about as much mechanical skill as a hamster. SignaturePeter Aitken >> My 98 740iL was the same way. I bought one of those AC recharger kits >> from [quoted text clipped - 4 lines] > How difficult is the kit to use? I have about as much mechanical skill > as a hamster. If you have outgassed this should fill it up and insert fresh oil (for sealing). What I wnat to know is where can one get this in the UK - google just turns up kits for Samsung at £££. > > How difficult is the kit to use? I have about as much mechanical skill > > as a hamster. > If you have outgassed this should fill it up and insert fresh oil (for > sealing). > What I wnat to know is where can one get this in the UK - google just > turns up kits for Samsung at £££. Larger Halfords sell AC top up kits. Signature*Laugh alone and the world thinks you're an idiot. Dave Plowman dave@davenoise.co.uk London SW To e-mail, change noise into sound. > I have a 1998 740i - a great car in all respects except the AC. It has > always seemed borderline to me. But, it was adequate until recently. The [quoted text clipped - 5 lines] > > Thanks, I also have a 98 749IL. If you have not changed the underdash recirculation filters (see e38.org for DIY write up), you have to do this as a first step. Mine were black at 43Kmi and I have heard many people say that they were astonished at the difference it makes. |
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