Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 09-28-2020, 12:11 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 8,200
andrewwynn will become famous soon enough
That's exactly the problem I suspect here


Sent from my iPhone using Tapatalk Pro
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote

Sponsored Links

  #12  
Old 09-28-2020, 02:07 PM
upallnight's Avatar
Member
 
Join Date: Aug 2012
Location: Cook County
Posts: 7,280
upallnight is on a distinguished road
Quote:
Originally Posted by andrewwynn View Post
That's exactly the problem I suspect here


Sent from my iPhone using Tapatalk Pro
But he said he can hear the "Click" and the "Click" is only made when the clutch makes contact with the steel pulley
__________________
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD
Reply With Quote
  #13  
Old 09-28-2020, 03:36 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 8,200
andrewwynn will become famous soon enough
I was thinking the function was slightly different. That the magnet threw the clutch plate, and the plate can wear like a disk brake and just wears out and doesn't grab?
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #14  
Old 09-28-2020, 05:11 PM
Member
 
Join Date: Nov 2014
Location: SF Bay Area
Posts: 1,303
oldskewel is on a distinguished road
Quote:
Originally Posted by trhaverstock View Post
I have a 2004 E53 3.0 with just over 105K miles. A/C was working great the other week and now abruptly not blowing cold.

I have a manifold gauge set and am getting around 90psi on both high and low sides with the A/C either on or off. The clutch is engaging when I turn the A/C on and will stop when I turn off. I checked the two 7.5a fuses in the glove box and am good.

I am looking for some advice on what to troubleshoot and hoping for advice it's not the compressor gone bad :-(. I am not well versed on A/C other than adding R134.

Thanks!
90psi on high and low sides:
- the fact that it is the same on high and low means the compressor is not compressing
- the 90 psi means you probably do have liquid R-134a in there along with the R-134a gas. The gas is saturated, and from looking at the 90psi pressure, that indicates a system temperature of 82F. PDF attached here to show the pressure vs. temp relationship for a saturated vapor condition.

forane-134a-pressure-temperature-chart.pdf

If you were to take the same test on a cold engine on a colder day, you'd get a lower pressure. Or on a warmed up engine, where the ambient temp in the engine bay is much higher, you'd get higher pressure readings. All completely normal and expected.

If the pressure were far below what you see on this chart, it could indicate that you do not have enough R-134a in the system to create a saturated vapor. So there would be no liquid, and only gas. Clear indication of insufficient fill. But that's not you.

On the clutch, what exactly makes you think the clutch is engaging? As is being discussed here, maybe it makes a noise, but maybe it does not fully engage. Can you see the shaft actually spinning (or not spinning)? (I don't know if that is impossible to check, but I'll ask anyway )
__________________
2001 X5 3.0i, 190k miles, AT, owned since 2014
Reply With Quote
  #15  
Old 09-28-2020, 06:38 PM
upallnight's Avatar
Member
 
Join Date: Aug 2012
Location: Cook County
Posts: 7,280
upallnight is on a distinguished road
Quote:
Originally Posted by oldskewel View Post
90psi on high and low sides:
- the fact that it is the same on high and low means the compressor is not compressing
- the 90 psi means you probably do have liquid R-134a in there along with the R-134a gas. The gas is saturated, and from looking at the 90psi pressure, that indicates a system temperature of 82F. PDF attached here to show the pressure vs. temp relationship for a saturated vapor condition.

Attachment 78942

If you were to take the same test on a cold engine on a colder day, you'd get a lower pressure. Or on a warmed up engine, where the ambient temp in the engine bay is much higher, you'd get higher pressure readings. All completely normal and expected.

If the pressure were far below what you see on this chart, it could indicate that you do not have enough R-134a in the system to create a saturated vapor. So there would be no liquid, and only gas. Clear indication of insufficient fill. But that's not you.

On the clutch, what exactly makes you think the clutch is engaging? As is being discussed here, maybe it makes a noise, but maybe it does not fully engage. Can you see the shaft actually spinning (or not spinning)? (I don't know if that is impossible to check, but I'll ask anyway )
Could be a misdiagnosis by a DIYer. He think the clutch for the compressor is actuating but it is not.

Here's a video with an X5 as an example on how to test and replace the coil and clutch.

https://www.youtube.com/watch?v=GOrJSSCG-1g

https://www.youtube.com/watch?v=0gVyOnZUfZU
__________________
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD
Reply With Quote
  #16  
Old 04-24-2021, 02:16 PM
Member
 
Join Date: Mar 2018
Location: Quincy, IL
Posts: 54
trhaverstock is on a distinguished road
Help - a new lead on an A/C issue

The A/C season came and went and I appreciate everyone's advice. After tinkering for several hours today I think I have this nailed down and need a sanity check from the group. It's a 2004 E53 3.0 with 110K miles.

**I think it is the HVAC control module** and need advice/confirmation.

I can see the clutch kicking on and activating the A/C compressor and see the front part of the compressor spinning very clearly (vs not spinning with A/C off). Vents are blowing *warm* air at normal engine operating temp with Max A/C on.

I got a lead to check the heater control valve. I disconnected the plug for it and it appears grounded well when touching my multimeter to + battery and neg to the valve or valve body.

I checked the heater control valve plug's voltage per https://www.pelicanparts.com/techart...eplacement.htm and I am only getting +0.03 Volts when the heat is set to 90 degrees or I have Max A/C and 60 Deg setting. I am supposed to be getting approx 12VDC when on Max A/C.

Fuse 48 (7.5amp) is good.

The HVAC control module "looks" fine and doesn't act strange in any way but am assuming a bad component or bad solder joint is possible?

Should I attempt to jumper 12VDC to the heater control valve (add 12VDC to the tan/orange wire) to see if I get A/C? Anything else I can check? SHould I pick up a used HVAC control module from Ebay?
Reply With Quote
  #17  
Old 04-26-2021, 09:11 AM
Member
 
Join Date: Mar 2018
Location: Quincy, IL
Posts: 54
trhaverstock is on a distinguished road
Bump for any thoughts............
Reply With Quote
  #18  
Old 05-25-2021, 08:43 PM
Member
 
Join Date: Mar 2018
Location: Quincy, IL
Posts: 54
trhaverstock is on a distinguished road
I want to post my results on getting my AC fixed in hopes it will help someone else!

As the original poster, I had my AC to the mechanic after all unsuccessful attempts to resolve on my own and he wanted to replace $1200 in parts. I asked if he'd be willing to replace the $15 Control Valve (see post from X5StayinAlive at https://xoutpost.com/bmw-sav-forums/...-cold-air.html). He agreed and I ordered the valve. He had a bit of a hard time getting the old out but evacuated the system, installed the new control valve and I am happy to report my AC has been working GREAT for the past week. It ended up running me a little over $150 in labor and materials plus the Santech control valve. It was worth a $150 gamble to me to try the valve before replacing the compressor and other components. I could have done this myself if I had the equipment and knowledge on AC but didn't want to mess things up.

Huge thank you to X5StayinAlive for posting that fix!!!!
Reply With Quote
  #19  
Old 05-26-2021, 08:44 AM
Member
 
Join Date: Jan 2010
Location: Harrisburg, PA
Posts: 72
sroth004 is on a distinguished road
Thanks for posting your solution. I know nothing about AC but will keep this fix in mind if mine misbehaves.


Sent from my iPad using Tapatalk
__________________
Garage
'05 X5 4.8is Imola Red/Black
'02 330Ci Convertible Electric Red/Tan
'01 M5 Lemans Blue/Black/Silverstone
'00 528 Electric Red/Grey
'07 BMW 328iX Silver/Black


'82 Mercedes 380SL Signal Red/Grey
'73 VW Beetle Convertible (restored)
'16 Honda Odyssey
'98 Volvo V70 GLT
'94 Ford Explorer XLT
'11 Honda Accourd V6 Manual Coupe (bought Fall 2020 from American Honda with 250 miles)

'01 Nissan Maxima 20th Anniv. Edition (running great at 200K but rusting away, sold)
Reply With Quote
  #20  
Old 05-26-2021, 10:19 AM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 8,200
andrewwynn will become famous soon enough
That's a great share.
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 01:20 PM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.