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AC no longer blows cold, compressor does not start, 2007 911…

Customer Question
AC no longer blows...

AC no longer blows cold

Mechanic's Assistant: Have you checked the Freon level?

Compressor does not start

Mechanic's Assistant: What is the model/year of your Porsche?

2007 911 turbo

Mechanic's Assistant: Are you fixing your 911 Turbo yourself? What have you tried so far?

Connected gauge to low side and preassure is high

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Disconnected battery to effect ECU reset

Submitted: 9 months ago.Category: Porsche
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Answered in 6 minutes by:
9/12/2017
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago
David Craig
David Craig, Auto Mechanic
Category: Porsche
Satisfied Customers: 5,592
Experience: Owner/Mechanic at 3D Automotive
Verified

Hi Im David, thanks for visiting the site. what are the high and low pressures reading with the manifold gauges hooked up and the vehicle shut off?

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Customer reply replied 9 months ago
have only low side gauge and pressure is high
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

have you added any refrigerant?

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Customer reply replied 9 months ago
No, compressor appears not to come on
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

if the low pressure is high its not going to come on. you need an ac manifold gauge set to check the high and low pressures.

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Customer reply replied 9 months ago
Ok, used to have but will purchase again and check
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

sorry my friend, but we need to know what the static pressures are before doing anything else. You dont want to guess, Im sure.

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Customer reply replied 9 months ago
High side pressure 110psi, Low side pressure 110psi as measured on gauges
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

whats the outside temp?

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Customer reply replied 9 months ago
74F
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

if thats the pressures with the vehicle shut off then you my friend are overcharged.

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Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

those pressures should match the outside air temp

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Customer reply replied 9 months ago
have not added any 134a to the system
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

ok, standby then

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Customer reply replied 9 months ago
ok
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

the only other thing that will cause that is air in the system. I would have the system evacuated and vacuumed down and recharged. If that doesn't resolve the issue then the compressor is probably bad. If you have a voltmeter you can pull the ac clutch relay and jumper across the plug to see if the compressor kicks on.

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Customer reply replied 9 months ago
THe car runs smooth and normal, perhaps the fuel cooler has leaked into the AC system?
Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

not a common issue at all.

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Porsche Mechanic: David Craig, Auto Mechanic replied 9 months ago

how's it going?

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