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95 Nissan Pickup 4 cyl. manual Air Conditioner blows cold air, then warm air. When working, air is cool, but seems to cut off and on. Compressor is still running when problem crops up, but no cool air. Freon level appears ok.

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6ya6ya
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Posted on Jan 02, 2017

old marine
  • 1973 Answers

SOURCE: troubleshooting air conditioner thermostat 1995 nissan pickup hardbody

The thermostat is located where the lower radiator hose goes into the engine. I've had to replace mine, and it took a while to find it. I found the easiest way to get at it is to remove the power steering pump (hoses attached) and set it over to the side to get at the bolts on the thermostat housing.

Good luck!

Posted on Jul 25, 2008

onyeredson
  • 404 Answers

SOURCE: Nissan Altima no cool air blowing or hot air blowing

Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.

Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K

Posted on Feb 24, 2009

  • 13 Answers

SOURCE: 2002 Nissan Maxima SE - Air condition not blowing cold air

simply "adding a can"is a good way to end up with non-functional A/C. the typical system has high/low pressure switches that enable/disable the system. you need to be at the correct volume of refrigerant as specified on the sticker under the hood. i recommend using the proper equipment, evacuating, pulling a vacuum, and then refilling the system with the appropriate amount.

Posted on Jun 23, 2009

roniecon
  • 6826 Answers

SOURCE: adding freon to the auto air conditioner, the

On that model,it will cycle on and off while you add freon.If it does not ,then the ac system might have a problem.The low side pressure switch is located on,or near the accumulator .Unplug the switch and take the wire end plug and connect the two plug in`s together(cross it out on the wire).This will make the ac compressor engage and you can charge the system,do not leave the wire connected,plug it back up to switch.If the ac compressor does not come on ,then have the system checked out.

Posted on Jul 23, 2009

Smartbuyer
  • 1 Answer

SOURCE: heater blowing cold air

My 05 sentra with 79k miles heat will warm up and then get cold after a mile of driving, we have tried to get the air pocket out, the mechanic stated he thought it could be a blown head gasket, another mechanic said it was a bad heater core. Any advice would be appreciated.

Posted on Dec 05, 2009

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1 Answer

AIR CONDITIONER


Could be a list of things including low on freon, low pressure switch, relay, or the a/c clutch on the compressor.

Jun 30, 2012 | 1997 Lexus ES 300

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Weak heating and weak cooling in cabin


get the heating coil and the thermostat checked.

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I have a 1993 Chevy S-10 4.3L automatic. The heat won't shut off. It pours out regardless of the position of the climate controls. Coolant level and condition good. AC would work but. Thanks.


#46-12-03: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY) - (Apr 7, 1994) 999999995.gif REVISION: 04/14/94
THIS BULLETIN IS BEING REVISED TO CORRECT THE TRANSMISSION LISTED IN THE MODELS. ----------------------------------------------------------------------
SUBJECT: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY)
MODELS: 1994 CHEVROLET AND GMC TRUCK S/T PICKUP WITH 4.3 ENGINE (VIN Z - RPO LB4), 4L60E TRANSMISSION (M30) AND AIR CONDITIONER/MANUAL CONTROLS (C60); OR 4.3 ENGINE (VIN W - RPO L35) AND A/C (C60)
BUILT BEFORE THE FOLLOWING VIN BREAKPOINTS:
PLANT DIVISION VIN LINDEN GMC RK501034 SHREVEPORT GMC R8501199 SHREVEPORT CHEVROLET R8105893 LINDEN CHEVROLET RK103097
CONDITION:
SOME OWNERS MAY EXPERIENCE A CONDITION WHERE THE AIR CONDITIONER IS TURNED ON AND DELIVERS ONLY WARM AIR.
CAUSE:
THE AIR CONDITIONER COMPRESSOR MAY DELAY LONGER THAN THE "ORIGINAL DESIGN" INTENDED 12 SECONDS, OR MAY NOT ENGAGE, DUE TO THE POSSIBLE MALFUNCTION OF THE COMPRESSOR DELAY RELAY.
CORRECTION:
TRUCKS BUILT BEFORE THE VIN BREAKPOINTS LISTED ABOVE MAY NEED A NEW AIR CONDITIONER DELAY RELAY. REPLACE ONLY WITH 15990540 AIR CONDITIONER COMPRESSOR DELAY RELAY. SPECIFIED PROCEDURE IN SERVICE MANUAL NATP 9429, PAGE 1B-59. TEST AIR CONDITIONER OPERATION FOR DELIVERY OF COOL AIR.
NOTE:TO TEST FOR PROPER OPERATION, PUT THE A/C CONTROL ON THE "OFF" POSITION, START THE ENGINE, THEN PLACE THE A/C CONTROL IN THE "ON" POSITION. THIS SEQUENCE WILL PROVIDE IMMEDIATE ENGAGEMENT OF THE AIR CONDITIONER COMPRESSOR. WHEN THE ENGINE IS STARTED WITH THE A/C CONTROL ALREADY "ON", THERE WILL BE A NORMAL 15.0 SECOND DELAY FOR THE AIR CONDITIONER TO ENGAGE.
SERVICE PARTS INFORMATION:
P/N DESCRIPTION QTY
15990540 A/C COMPRESSOR DELAY RELAY 1
PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

Jul 29, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

Air conditioner starts blowing cold air then blows warm


This is most likely the cycling of the AC unit. As the compressor pressurizes the 134a Freon you get the cold air, once it reaches a certain pressure it cuts out. If you are low on Freon it will cycle out more often. Check your freon level with a gauge to see if your within the proper tolerance. If the compressor runs for a period and doesn't reach the right pressure it will cut out to keep from damaging your compressor so it is important to keep the correct amount of freon in the system.

Jun 21, 2010 | 2002 Dodge Stratus

2 Answers

Air Conditioner stops blowing cold air when vehicle is not moving


plus one on the cooling fan problem. if it was low on charge then as you slow down, condensor temps and line prressures would raise therefore it would cool at low speed and and not when moving since the incoming air would drop system temp,reducing line pressure and then cusing compressor to cycle. the auxillary cooling fans must be on whenever a/c is on, if not, thats your problem. get this taken care of because if you get stuck in traffic, your engine will overheat also if fans are not running

Sep 02, 2009 | 2007 Ford Five Hundred Limited Sedan

2 Answers

Nissan Altima no cool air blowing or hot air blowing


Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.

Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K

Feb 24, 2009 | 2002 Nissan Altima

1 Answer

Pick up Nissan air conditioner system.


CHECK YOUR CONDENSER IT MIGHT NOT BE GROUNDED. MINE DID THE SAME THING IT WOULD COME ON AND THE CONDENSER WOULD RUN FOR A FEW MIN. THEN KICK OFF AND NOT COME BACK ON MAKING IT BLOW COOL AND NOT COLD

Sep 29, 2008 | 1990 Nissan Hardbody King Cab

1 Answer

I have a 2000 dodge ram 1500. The air conditioner blows just warm air. The system was working when engine was shut off but did not work properly upon restart today. The AC/Max A/C switch seems to work...


If the compressor is outputting cold freon maybe the vent in the dash is not opening to allow the air to flow thru the condenser. Try operating the heat/cool switch and the recirculting air control in an effort to get it to open the damper.

Aug 02, 2008 | 1987 Dodge Pickup 2WD

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