Question about 1995 Nissan Pathfinder

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Ac not cooling when truck is not running on road

Ac cools only when driving truck if the truck is on but not running ac wont cool

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Check your vacuum lines

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1 Answer

Why does my ac quit working in traffic


At 30 miles per hr you get enough air flow through the condenser coil to keep the A/C cooling. Check the cooling fan at the radiator. It should run when the A/C is on no matter what the engine temperature is. When the freon is low enough to affect cooling it will do the same in traffic or on the road. Engine coolant level has no affect on the A/C,.The condenser is forward of the radiator. You didn't say the car was running hot.

Jun 14, 2014 | 2005 Ford Taurus

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My 1994 Toyota Previa LE overheats when I put on AC. It overheats while on idle.


cooling fan not running.check for faulty cooling fan relay or fuse.cooling fan fan should be running when you turn on AC.hotwire cooling fan make sure cooling fan motor okay.

Jul 10, 2013 | Cars & Trucks

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Engine cooling fan only works when ac or defrost is on


if engine at long stand still,the engine temperature will rise about 190 degrees the cooling fan suppose to automaticaly turn on when coolant temperature sensor get hot it cause its resistance decrease causing pcm to send power to coolant fan relays and cooling fans, when you turn on AC the cooling fans suppose to turn on to cool down AC CONDENSOR, IF NOT AC WONT WORK COOLING FAN COOLS DOWN REFRIGERANT SO IT CAN RECYCLE THROUGH THE SYSTEM AGAIN.your cooling is suppose to turn on when engine at a sit still if vechicle not moving as coolant temperature rises at a set point the cooling fans will turn on cool down engine.cooling fans dont turn on when you first cold stsrt vechicle unless you have AC SWITCH ON.if cooling fans dont turn on when vechicle at a long stand still or moving along slow traffic.if coolant temperature sensor been replaced and fuses and relays okay have dealership check see if pcm driver circuit working faulty pcm will cause cooling fans not to turn on.

Sep 27, 2012 | 1996 Buick Century

1 Answer

Hyundai accent 2002 car high temparature during start ac


check see if cooling fan running could have faulty cooling fan relay or fuse.if cooling fan dont run when ac on car will overheat.AC COMPRESSOR PUT LOAD ON ENGINE.

Sep 06, 2012 | 2001 Hyundai Accent

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Ford focus 2006 engine overheating once ac swicth is on..


CHECK TO SEE IF COOLING FAN IS RUNNING.IF NO CHECK COOLING FAN FUSE AND RELAY.THE COOLING FAN NEED TO BE RUNNING WHEN AC ON BECAUSE AIR CONDITIONER PUT A LOAD ON ENGINE.COOLING FAN KEEP RADIATOR AND AC CONDENSOR COOL.FAN NEED TO RUNNING.

Sep 04, 2011 | Ford Focus Cars & Trucks

1 Answer

Are both cooling fans supposed to come on with AC or is 1 temp controlled? Car starts to run warm and AC blows warm air when stopped at light. Cooling system is full with 50/50 mix


if the fans are not coming on then i would start with that, might be a problem with the fans or with what tells the fans to come on, if it runs cool while driving and warmer when sitting then it could be a couple of different things, need to check the front of your radiator/condesnor, its the thing behind your grill, make sure it nut plugged / clooged of full of bugs, if air flow cant make it through then it wont transfer heat.

May 05, 2010 | 1999 Ford Taurus

1 Answer

1990 Geo Metro. Driving down the road with the a/c on the car loses power and starts slowing down. Also hear a sound, like compressed air being released the wife says under the car behind the front seats,...


It sounds like the ac compressor is building up to much head pressure.Check the cooling fans to see if they come on when the ac is turned on.The cooling fan should come on when the ac is turned on.This keeps the head pressure down so the freon keeps cool enough to cool the vehicle.Check the cooling fan,or fans to see if they are working when the ac is on,let me know if I can help you any more.

Sep 09, 2009 | Geo Metro Cars & Trucks

1 Answer

A/C air flow problem


AC works as so..

It does not actually cool the air, however it removes the heat from it (and without heat the air feels cool). As the air is blown around the car the AC system removes the heat from the air, and then it moves it to the condenser at the front of the car (infront of the radiator).

Now usually the car is moving forward, so that air flow will cool the condenser and then you can move more heat from the air inside the car and push it out the front of the car again. This is why, if you have a front wheel drive car, you will hear the cars fan start as soon as you turn the AC on.

Also the car will be much better at cooling the air that is recirculating inside the car (your a/c system will have a button for this) then if it tries to cool hot air from outside.

The long and short of it is that if you hop in a hot car, start the car and run the ac (even at full) it wont be cool straight away, it is mostly influenced by how much you are driving forward.

Try this. Start the car, turn the AC to recirculate the air, turn the AC on and go for a drive for 10 mins, pull over and wind down the window. Compare the outside air to the inside air, then you will see the difference.

Jun 06, 2008 | 1993 Pontiac Bonneville

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