Question about 1998 Chevrolet Lumina
Where is the A/C low port ?
Open the hood, looking at the engine locate the air filter box(large rectangular black plastic box with four fastener clips on each top corner and a rather large 3" or 4" hose connecting to it coming from the engine(intake), the recharge port(low side) is hard to get to and is under the rear of that black plastic air filter box, please note that on all cars the "low" recharge port of any air conditioner system is always the larger valve which is always attached to the larger a/c hose, and is also called the "suction" line port.
The high pressure port is the smaller fitting and is attached also to a smaller diameter air conditioner line, never, ever, attempt to add freon 134a or the old system freon R12 to the high pressure side(the smaller of the two valves) as you may have the freon can become a pressurized bomb exploding in your hand due to the high pressure, that will, instead of sucking the freon out of the freon can and into the a/c system as a charge the high pressure will force high pressure freon gas that the a/c compressor has just compressed into the freon can at over 100 lbs. psi, causing the can to blow without warning.
Please always handle every repair you do on any vehicle with safety being number one priority, wear safety googles(eye/face protection)and protective mechanics gloves on your hands, freon can cause frost bite if over exposed to your skin.
Posted on Jun 07, 2010
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Posted on Jan 02, 2017
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