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Orifice Tube

Railroader on Thu February 12, 2009 4:16 PM User is offline

Year: 1992
Make: Buick
Model: Century Custom
Engine Size: 3.3
Refrigerant Type: R-12
Country of Origin: United States

Could someone please tell me where the Orifice Tube is located on this car. Thanks

Edited: Thu February 12, 2009 at 5:24 PM by Railroader

TRB on Thu February 12, 2009 5:35 PM User is offlineView users profile

This vehicle is an OT setup. So it will be either in the liquid side of the evap or condenser outlet. Considering it is this tube it would be an evap mounted OT.



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GM Tech on Thu February 12, 2009 7:03 PM User is offline

Those old A-cars had the ability to put them at the condenser outlet- (driver's side) or at evap inlet- I have even seen cars come in with two OTs- one in each area....so look for the dimples in the line- you may have them both places- and I would check both for OTs if they both have dimples...

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

Railroader on Thu February 12, 2009 7:34 PM User is offline

Thanks, I found it, was in the Condenser outlet, I checked the evap inlet as well, nothing found. Thanks for the Help.

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