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  #41  
Old 07-28-2019, 08:48 PM
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Quote:
Originally Posted by OnewireAT1 View Post
Thanks andrewwynn!

I think the compressor is the culprit at this point. But the shop should have seen this!?


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That will depend on what the customer/owner/you instructed the shop to do. Did you tell the shop to fix the AC system or just instructed them to add refrigerant to the system.

If you told them to fix the AC system and it still wasn't working when you took back ownership of the truck, you should have complained right then and there.

If you asked them to fill the system with refrigerant, that is what they did. I tell my friends to tell the mechanic what the problem they are having with the car, but never tell them to tell the mechanic how to fix the car.
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  #42  
Old 07-28-2019, 09:11 PM
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Quote:
Originally Posted by Fifty150hs View Post
On the low side? 50 psi is too high according to BMW.

Max on the low side is 2.2 BAR. https://www.newtis.info/tisv2/a/en/e...-check/Oke6MtR
Those numbers are assuming the compressor is running. The OP's compressor is not running, so it's a completely different story.

Clearly spelled out in my dissertation on page 3, but I understand if most people chose not to read that. Hopefully a few will learn from it.

As explained there, with the compressor off, there is a direct correlation between temperature and pressure if there is a saturated vapor in the system (i.e., both liquid and vapor coexisting, as they should). And that pressure-temperature relationship is shown in that inner red ring on the pressure gauges.

Since the indicated pressure is well below that which would be predicted by that relationship, I suggested (qualified by the fact that there seemed to be some doubt about measurements) that could be explained by a significant lack of refrigerant, meaning there is no liquid, only vapor.

... which comes to the same conclusion as AndrewWynn:
"50 seems waaay too low you are prob just low on gas."

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  #43  
Old 07-28-2019, 09:20 PM
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Quote:
Originally Posted by Ojai5 View Post
Sorry to thread jack however I didn't want to start ANOTHER ac thread.
2003 3.0
Mine stopped blowing cold, 95-100 degrees here everyday. I can't really dive my kids around.

Condenser turns-on
no codes
low side is around 50psi
I don't know high side

aux fan does not turn on with AC - I can activate it with my schwaben scan tool
aux fan turns on when I unplug the sensor wire
aux fan does not turn when car warms up

I'm stumped???
Would love some help.
You're stumped??? I'm stumped!!!! Never knew that a condenser is suppose to turn on.
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2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000
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
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  #44  
Old 07-28-2019, 09:23 PM
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Quote:
Originally Posted by andrewwynn View Post
The shop should not have released the car without either working AC or a reason why.


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2006 Infiniti G35
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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
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  #45  
Old 07-28-2019, 09:54 PM
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I think he meant either the condensor fan or the compressor clutch but clarification is in order


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  #46  
Old 07-29-2019, 12:16 PM
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Yes sorry typo, compressor clutch in engaged
I think my best best is to take it to a shop to get pressure reading from both sides.
I would guess that the fan isn't kicking on because of a pressure problem.
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