A/C pressure test

[Csaviano]

Great David. Thank you for your help. I will take it to a mechanic at this point. On the flip side I did learn how to use gauges and and now know more about the a/c system.

[upallnight]

Originally Posted by Csaviano

Great David. Thank you for your help. I will take it to a mechanic at this point. On the flip side I did learn how to use gauges and and now know more about the a/c system.

When you borrow the gauges from auto zone, after you connected the lines from the gauges to the bayonet fittings in the engine compartment, did you open the valves to the lines?

[David.X5]

List on that Denso Compressor is $450 and you can get them from Rock auto or Amazon for $200-$220. Some x5 have more expensive compressors, but this is not one of them.

[g300d]

Denso on the pre facelift, Calsonic Kansei on the facelifts.

Both variable displacement models.

[David.X5]

This is sort of dead, but just wanted to post this info for the next person. I looked up the Denso part numbers for the pre-facelift 4.4L , and this is what their website says.

Type 10S are Reciprocating, Dual Swash Plate, fixed displacement
Fits pre-facelift 4.4L E53 X5
Denso Part Number 471-1380
Type 10S17C

[g300d]

^Ah, I've thought for the longest time the Denso's were also variable displacement, my mistake. Thanks for sharing the info!

To add to the data, facelift 3.0 gas models use the Calsonic Kansei CSV 717 variable displacement compressors.

[Csaviano]

Dear friends. This is an update

Took the car to an Indy shop to have ac whooped at. After $100 they told me I have a wiring issue and it will be at least 3 more hours to diagnose the problem. Then they listed all other things that were wrong with it unrelated to the ac and concluded I should consider trading my baby in. Well, here I am with no a/c and with my baby in my garage.

I have power to the fan and to the compressor. On the inside, the ac max or the seat warmers switches Are functional. However the couple of time the ac started working while driving down the road, the ac max and seat warmer switches became functional. Any hints?

[David.X5]

That stinks. Electrical gremlins can be a time and money sink. Is the blower inside the car working? When the special resistor for the blower fan speed goes bad, The AC can get wonky. But you will usually have problems related to the blower - like it stays on when you turn the car off.

I think you started this by saying you replaced the AC fan (engine compartment one). Was that a known brand or a generic? Have you changed any other electrical parts or done anything else where you disconnected wiring harnesses, etc.?

[Csaviano]

Yes blower inside the car works. I replaced the pusher fan with generic brand but at a couple of points it did work.
To the pusher fan there a small blk green wire. I traced it from the fan to the dme and it had connectivity but none from the dme to the control panel.