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Enes, VOLVO Master Technician
Category: Volvo
Satisfied Customers: 4900
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Need help replacing A/C expansion valve in a 2001 Volvo S60,

Customer Question

Need help replacing A/C expansion valve in a 2001 Volvo S60
JA: Have you checked the Freon level?
Customer: yes. Full. Compressor cycles on and off every 10 seconds.
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Jumpered the compressor clutch and the high pressure went through the roof - indicating a blockage or expansion valve malfunction.
JA: Anything else you think the mechanic should know?
Customer: nope.
Submitted: 2 months ago.
Category: Volvo
Customer: replied 2 months ago.
Appears that the EV is behind the firewall. How do you get to it?
Customer: replied 2 months ago.
There's two large refrigerant lines going into the firewall about in the center of the car. There's a metal plate with two 10mm bolts. Once removed, doesn't give access.
Expert:  Randall C replied 2 months ago.

Hello, the plate should have nuts, you removed the plate? correct? what model S60?

Customer: replied 2 months ago.
It had 2 10mm boltsS60 T5 model (5 cyl turbo)
Customer: replied 2 months ago.
You can't really remove the plate because the hoses run through it.
Customer: replied 2 months ago.
It's "loose" and just hanging there now.
Customer: replied 2 months ago.
Expert:  Randall C replied 2 months ago.

I am aware of the valve and thanks, ***** ***** trying to help with the plate, I do not recall bolts holding the plate, Only 2 nuts and 2 different design plates, If you have bolts? I am going to opt out as My info may not be correct I send

Customer: replied 2 months ago.
Will another Volvo mechanic be picking up?
Customer: replied 2 months ago.
C'mon Randall C. Don't leave me hangin'! Will someone else be picking up this question?
Customer: replied 2 months ago.
Anyone there?
Customer: replied 2 months ago.
OK, I figured out where the expansion valve is and removed it. To be honest, I'm not sure if that's the problem since I can blow through the high pressure side. I was hoping to see it blocked.
Customer: replied 2 months ago.
Now I'm wondering if there's a blockage in the condenser. Is that common?
Customer: replied 2 months ago.
To recap: compressor was cycling on/off every 10 seconds or so. I tested the voltage to the clutch (with it disconnected from the compressor) and I get a constant 12V when the A/C is running. When I jumped the clutch with 12V it ran for 10 seconds or so then blew the pressure relief safety valve on the high side. The relief valve is set at 400psi. This would indicate a blockage somewhere. I suspect that there's a high pressure switch that is triggering the compressor off after it builds excessive pressure.
Customer: replied 2 months ago.
I suspect expansion valve or condenser blockage.

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