AC Takes forever to blow cold.

[Crowz]

Warranty shows 1 year now.

Maybe it was the aux fan I am thinking of on the lifetime warranty. I know the $100 aux fan I bought has a lifetime warranty (just checked and made sure) but I thought the compressor did too.

[FRod1981]

Thanks!

[Crowz]

Originally Posted by FRod1981

Thanks!

Your welcome. AC is the one thing I make sure works on all of my vehicles. With 20 of them I end up running into about anything you can imagine can go wrong with an ac system.

The X5 was the first variable compressor I had dealt with so it threw me when I ran into this delayed cooling crap.

[FRod1981]

scale of 1-10 how much of a pain in the ass am I looking at replacing it. assuming I have to bleed the system of refrigerant, install it, then take it back to a shop to have it recharged.

[Crowz]

Originally Posted by FRod1981

scale of 1-10 how much of a pain in the ass am I looking at replacing it. assuming I have to bleed the system of refrigerant, install it, then take it back to a shop to have it recharged.

Wasn't bad actually. Remove the cover/shield from under the car and your basically looking straight at it. Take the belt off and the 3 bolts I think and the hose bolt and unplug the electrical plug. Its been a year since I did it but the best I remember that's all there was to it.

[deepblonde]

Originally Posted by FRod1981

I can't find any actual help on this. So like the post says, when the car sits for a few hours, I start it and no cold air... for about 5-10 min. It seems like the car needs to be in the normal part of the temp gauge (not cold) and also I need to rev it above 3k or so just to get it to kick in. I had the R134 removed and replaced and was down .2 lbs but now its back to full, same problem.. When its cold it blows cold the entire time and even if I leave it for up to an hour it comes back on immediately. I can't figure out what I need to replace? the compressor? its compressing fine.. a switch? which one?.

Help.

It's the control valve in your variable displacement compressor .
When you rev it above 3000rpm it causes the valve to engage.
https://xoutpost.com/bmw-sav-forums/...-ac-delay.html

[Crowz]

Originally Posted by deepblonde

It's the control valve in your variable displacement compressor .
When you rev it above 3000rpm it causes the valve to engage.
https://xoutpost.com/bmw-sav-forums/...-ac-delay.html

Not always. I replaced the valve thinking this would solve it and it was CHEAP. After recharging the system it still had the same issue.

Replaced the compressor and it has worked perfectly ever since.

The reason I don't recommend the $9 valve has to do with the fact you have to remove the compressor to change it and you lose all of your Freon.

So its just as much trouble to change the compressor as the valve and the valve isn't guaranteed to fix the problem where the compressor is.

So for $119 you get a working ac 100% of the time or for $9 plus Freon plus hassle you MAY fix it on a worn out compressor.

[andrewwynn]

+1


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[deepblonde]

Originally Posted by Crowz

Not always. I replaced the valve thinking this would solve it and it was CHEAP. After recharging the system it still had the same issue.

Replaced the compressor and it has worked perfectly ever since.

The reason I don't recommend the $9 valve has to do with the fact you have to remove the compressor to change it and you lose all of your Freon.

So its just as much trouble to change the compressor as the valve and the valve isn't guaranteed to fix the problem where the compressor is.

So for $119 you get a working ac 100% of the time or for $9 plus Freon plus hassle you MAY fix it on a worn out compressor.

I agree that replacing the compressor is better, especially if you replace with a conventional compressor, because the variable displacement compressor always needs some pressure to engage the valve.

[upallnight]

Originally Posted by FRod1981

scale of 1-10 how much of a pain in the ass am I looking at replacing it. assuming I have to bleed the system of refrigerant, install it, then take it back to a shop to have it recharged.

NOPE, you don't bleed the refrigerant out of the system. You take it in to have a shop recover the refrigerant. The same shop that will evacuate the system and recharge the system.

Are you a Trump supporter that doesn't believe in Global Warming and bleeding refrigerant into the atmosphere doesn't hurt the ozone layer?