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An exercise in futility?

Narcoleptic on Sun February 08, 2009 1:32 PM User is offline

Year: 1993
Make: Volvo
Model: 940
Engine Size: 2.3L
Refrigerant Type: R-134a
Country of Origin: United States

I have a 1993 Volvo 940 Turbo wagon that I'm considering for summer duty. Normally I only drive this car during the winter. Two years ago I had the system vacuumed and recharged, and it hasn't done too well the few times I've driven it during the summer. Due to it going year-round, I'm going to completely go through the A/C system to make sure it is ready. My only problem is, am I wasting my time? I live in North Texas, where it can be over 100 degrees in August. The car already has tint to help it, but Volvo A/C systems are weak. Is there anything I can do past a parallel flow condenser to help? This is a stock R-134a system, not a conversion.

TRB on Sun February 08, 2009 5:56 PM User is offlineView users profile

All depends on what your pressure readings are under a high ambient. True PF condenser can add performance to a system that is not cooling if the system is not already maxed out. Lets say you have great pressure readings with the current condenser yet have poor performance. Adding a PF condenser is not going to help much to improve cooling. Seen many European vehicles with undersized evap cores and no matter how great the gas to liquid conversion is they perform poorly in high ambients.

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JACK ADAMS on Mon February 09, 2009 12:15 AM User is offline

Production date of this Volvo will determine which system you have. We know it is a 134a system but witch condenser they used in this year may make all the difference. They use a GM style evaporator and accumulator with a CCOT (orifice tube) type system; witch was not bad but could perform better. Now you need to make sure this system has plenty of air flow and the fan(s) are in working condition as well as a proper charge. It may be best to post the temps and gauge reading if all possible. This will help us determine what you may need as well as a better understanding what the system is doing.

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