Question about 1990 Mercury Topaz

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Where is the low side ac hose? - 1990 Mercury Topaz

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Its by the firewall on the right hand side. Hard to find between the firewall and motor.

Posted on Oct 21, 2008

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1 Answer

How to locate low side ac hose


Coming off the compressor...the low side (or suction) hose will be the larger hose.
If running the engine with A/C on...the low side (larger) hose will be cool or cold and the other hose (high side / smaller) will be hot.

Hope this helps...

Jul 23, 2011 | Ford Bronco II Cars & Trucks

1 Answer

Ac not working


1st you must check for correct refrigerant levels in ac system, must be done with a/c guages, you have a pressure switch that senses correct pressure in a/c system if you are low in refrigerant the a/c will not come on. if you have good pressures high side 70-95 low side 70-95 depends on ouitside air temperature, with the engine off then look at the switch in the high pressure line, jeep also has a fuse in the fuse box under the hood and a a/c relay please check those too. I hope this helps. (red is high side hose- small fitting plug , blue is low side- larger fitting If ac is working and compressor is on good pressure ranges from high side the red hose 160 to 230 depending on temperature outside; low side blue hose 27-46 low side depending on outside temperature, Wear glasses to protect your eyes. I hope this helps good luck

Sep 10, 2009 | 2006 Jeep Liberty

1 Answer

How do you check the high pressure on the air conditioner for a 1997 volvo 850


Do you have ac gauges?You can only check with set of 134a gauges.Hook the red hose of the ac gauges to the large ac port on the high side ac line(it is the small ac line/hose).Do not turn the red knob on (on the ac gauges)If need to hook up low side(blue hose)to the small ac port on the low side line(it is the large ac port).If I can help,let me know.

Sep 09, 2009 | 1995 Volvo 850

2 Answers

To verify which achose is the low side


AC hoses are normally marked on the caps of what side it is, a red cap indicated the high side whilst a blue would indicate the low side.

Also the low side quick connector is smaller then the high side, also the low side would be the one that is cold whist the high side would be hot when running, low side would head for the interior of the car whist the high side would head to the condenser in front of the radiator then onto the receiver dryer and into the car hitting the evaporator and back out to the compressor again.

Aug 30, 2009 | 1995 Jeep Grand Cherokee

2 Answers

Where is low side ac hose for recharging located


maybe on the dryer. if your only going to put R134 in without sucking any out. then only put it in the high side with the car not running.

Aug 13, 2009 | 1995 Ford Taurus

3 Answers

Where is the low pressure ac port located?


it is either in the larger of the two ac hodes or in the round can that is called the receiver dryer, that is near the rear of engine compartment, the low side (larger hose) hose goes to it.

Aug 10, 2009 | 1995 GMC Yukon

1 Answer

Where is the low side line to add refrigerant to a 1998 grand cherokee


Hi,Let`s see if we can help.Look for the ac compressor,and follow the large ac line/hose until you come to the small ac service port,this is it.The high side line/hose is the smaller line/hose with the large ac port.You can`t hook up to it any way with a single ac charge hose ,so there you go.If i can help...roniecon@gmail.com

Jul 17, 2009 | Jeep Grand Cherokee Cars & Trucks

1 Answer

In the Lincoln ls 2004 where is the low pressure port for the ac? Is there a diagram


find the ac compressor,two lines come off the compressor,the large line/hose has the low side service port on it ,just follow the large ac line/hose untill u see it ur charge hose will couple on to it

Jul 04, 2009 | 2004 Lincoln LS

1 Answer

Help with ac recharge


If you have a refill kit, the hose will only connect to the low side hose. Most likely, the hose under the filter is the high side hose. Hope this answers your question. Best of luck.
Greg

p.s. When recharging AC, have engine running and AC on HIGH

Jun 25, 2009 | 1995 Chevrolet Lumina

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