Question about 1997 Chevrolet Monte Carlo

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Where is the Low AC Port for a 94 Suburban..???

Trying to charger with r134a and dont wanna use the wrong place..Help

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It will only hook up in one spot,the low side service port,it will not hook to the high side,so you can not go wrong,If this was at all helpful,please rate,thank you.

Posted on Jul 19, 2010


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I'm trying to recharge my ac on my 2006 Lexus RX400H but cannot get the hose to snap on the low pressure port. Is there another type for hybrids? Or why will it not connect?

the ports on an R134a AC system are different sizes to prevent trying to charge from the wrong side. If your coupling doesn't fit on the port snugly, you may have misidentified which port is which. If it does fit and simply won't engage, then you should clean the port, check the coupling for debris, and make certain that you are applying pressure evenly as you connect it. Any misalignment / uneven pressure, will prevent the coupling from engaging. You may also need to manually engage the retaining ring due to manufacturing variances.

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Were di i recharge the ac on my car

if it is the 3.4 v6 the low side is on the passager side behind the motor. it should have a blue cap on it, and the low side is the fatter of the two ac lines

Aug 08, 2010 | 1994 Pontiac Grand Am

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How do you connect a/c charger to make your central air cooler

The 1998 Dodge Caravan ac should be charged at the low pressure service port. This port is located on the suction line near the compressor. The suction line can be identified by it's size, it being the larger of the two line connected to the compressor. You must purchase a recharge kit at your local part store, which should include charging hose with pressure gauge and a can of R134a freon. Gloves and eye protection should be worn during servicing.(freon can freeze your eyes and cause frost bite to your hands). Connect freon to charging hose, connect charging hose to low pressure service port, open valves and start engine, turn on ac. If compressor won't start it may be required to disconnect the low pressure switch and jump out the connector.

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Can of r134a hose won't stay on low pressure port

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What type of freon is in a 1994 GMC Suburban

There should be a lable underhood.but probably had R-12,Best to go ahead and convert to R134A.Recommend replace reciever drier ,buy conversion fittings from parts house for 134A,remove compressor turn upside down and rotate clutch by hand to get as much oil out as you can,then pour in aprox 4 oz pag oil.Reinstall,change orfice tube the will need aprox 12 oz R134A to replace 16oz R-12.Buy R134A at walmart cheaper than all parts houses by at least $2.00 a can.Cgarge till low side preasure at aprox 40 to 45 psi and gigh side 200 to 250 psi.Should cool fine.

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A/C is a specialised job,do not use one of these silly top up tins,these should be banned because they can and do cause problems

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1 Answer

1999 maxima ac

All R134a connectors are the same. There is a high and low connector, these are different sizes. You either have the wrong "charger" kiit (possibly for R12) or are using it incorrectly.

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