Ernie Smith Posted on Jul 28, 2015

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Rear ac blows warm after replacing expansion valve and evap core,also cold at expansion valve and temp actuator is working

Claude Kayser Jul 30, 2015

Why does the air conditioning in my 2003 GMC Yukon blow cold in the front but HOT in the back like the heat is on. It blows good just hot air. I have read that it could be the heater valve not closing...Is...

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Randy Ohler

Dodge Master 14,585 Answers
Posted on Jul 29, 2015

Randy Ohler

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Not enough freon? Dual air takes up to 48 ounces.

Testimonial: "no that did not work either"

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Randy Ohler Jul 29, 2015

Has anyone put a set of gauges on it? Get gauges on it. Read the high and low pressure, with the outside temperature at the time. I'll tell you what is wrong.
Ernie Smith Jul 31, 2015

pressures are fine temp is 88 outside pressures are fine temp is 88 outside
Randy Ohler Aug 01, 2015

At 88 degrees, the pressure should be at 45 to 55 low, and 250 to 300 high.

Claude Kayser

Dodge Master 9,098 Answers
Posted on Jul 29, 2015

Claude Kayser

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2006 Dodge Caravan Rear AC evaporator Blockoff Easy air ...

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Jul 2, 2012 - Uploaded by banshee8989 Most of the time if your AC stops working on a 2002 to 2008Dodge Caravan it is ... 2005 Dodge Grand Caravan 3.8L. No luck so far finding that ...

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2006 Dodge Caravan Rear AC evaporator Blockoff Easy air conditioner fix

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93 Ford Aerostar rear ac not blowing cold?

If the front is blowing cold but not the rear, chances are it's a bad expansion valve. But check for clogged evap coil first.

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Jul 06, 2021 • Ford Cars & Trucks

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My daughters expedition 2005 rear air blows hot air until she drives on the highway above 60 then it gets cold. The front blows cold all like it is supposed to. Could it be the expansion valve?

First make sure that the ac system is full of freon. Hook up a set of gauges to see what kind of pressures you have. 35-45 low side and 250-375 high side depending on the ambient temp. The rear expansion valve could be bad but also the heat / cold actuator could be bad. Watch this video.
https://www.youtube.com/watch?v=ucOTZAg27lo

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Jul 09, 2020 • Cars & Trucks

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2002 gmc yukon xl rear heat blows heat front blows cold air

Try to back wash the heater core first if it doesnt work then its clogged up try to turn the heater on the front with the heater off for the back keep an eye on the temp guage if it goes up than normal then its clogged....

Fyi u have to run the engine for awhile with the heater fan on

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Feb 28, 2015 • 2002 GMC Yukon XL

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Why does the air conditioning in my 2003 GMC Yukon blow cold in the front but HOT in the back like the heat is on. It blows good just hot air. I have read that it could be the heater valve not closing...Is...

To check the rear expansion valve, see if the a/c lines are different temperatures. One line to the rear evaporator should be hot and the other cold if it is working.
Try to recailbrate the blend door actuator. Remove the HVAC module fuse. Wait at least 15 seconds. Replace it, turn the key on and wait 40 seconds

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Rear a/c blows warm on 01 gmc suburban

Trying to isolate the concern by dividing the a/c into 2 units. If the lines are cold going to the rear a/c, look at the rear a/c control switch or blend door areas. If they are not, look at the switch from the front controls to the blend door for the actual rear a/c lines.

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Sep 10, 2012 • 1995 GMC Suburban

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04 TAHOE Front A/C works great, Rear A/C blows warm. Seems like something isnt shutting the flow of hot water to the back??

Hi Jason.
Sounds like you are on the right track with the flow of hot coolant not stopping. Check your heater control valve to make sure it is stopping the flow of coolant through the rear heater core. Let me know. Hope this helps.

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May 25, 2017 • 2004 Chevrolet Tahoe

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I have a 2000 Nissan Xterra and I'm having AC problems. We've replaced the evap. core and expansion valve. I've also replaced the AC lines and the thermo control amplifier. The AC is not nearly as...

A Chiltons/Hanes repair manual for this Xterra will have the A/C schematics you need. When you replaced those parts did you re-charge the system? You may have a refrigerant leak.

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Jun 03, 2017 • 2000 Nissan Xterra

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99 SAAB 9-5 PROBLEM WITH AC....AC IS WORKING.. CONDENSING WITH NO PROBLEMS ...WATER RUNNING OUT UNDER CAR..PRESSURES ARE 225 HI 35 LOW... NOT GETTING COLD AIR INSIDE...LUKE WARM ON DRIVERS, AND COOLER...

OK, most cars have heater cores that get hot but the blender door directs air away from this core in the a/c mode when you want cool air from the evaporator.

I'm not sure if there is a control valve which stops the water from going through the heater valve.

I think the part is called a 'heater blend door actuator' that you are after.
http://www.autoanything.com/air-conditioning-65-861/201A1060.aspx?kc=AFFCJ&mr:referralID=c9ca506d-9f22-11df-bf8d-0026b95a1738

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Aug 03, 2010 • 1999 Saab 9-5

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My 1999 mercury villager ac works in the front but no cold air blows in the back. What needs to be fixed?

it needs to have the rear expansion valve to be inspected for metal, if clean repl expansion valve and recharge a/c

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May 20, 2010 • 1999 Mercury Villager

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2001 Chevy Suburban: Front A/C is very cold...Rear A/C blows warm

it has a thermal expansion valve on the rear evap core top

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Sep 06, 2009 • 2003 Chevrolet Suburban 1500

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93 Ford Aerostar rear ac not blowing cold?

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Rear ac blows warm after replacing expansion valve and evap core,also cold at expansion valve and temp actuator is working

2 Answers

Randy Ohler

Claude Kayser

2006 Dodge Caravan Rear AC evaporator Blockoff Easy air ...

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93 Ford Aerostar rear ac not blowing cold?

My daughters expedition 2005 rear air blows hot air until she drives on the highway above 60 then it gets cold. The front blows cold all like it is supposed to. Could it be the expansion valve?

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2008 Grand Caravan

93 Ford Aerostar rear ac not blowing cold?

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Rear ac blows warm after replacing expansion valve and evap core,also cold at expansion valve and temp actuator is working

2 Answers

Randy Ohler

Claude Kayser

2006 Dodge Caravan Rear AC evaporator Blockoff Easy air ...

Add Your Answer

Attachments: Added items

Related Questions:

93 Ford Aerostar rear ac not blowing cold?

My daughters expedition 2005 rear air blows hot air until she drives on the highway above 60 then it gets cold. The front blows cold all like it is supposed to. Could it be the expansion valve?

2002 gmc yukon xl rear heat blows heat front blows cold air

Why does the air conditioning in my 2003 GMC Yukon blow cold in the front but HOT in the back like the heat is on. It blows good just hot air. I have read that it could be the heater valve not closing...Is...

Rear a/c blows warm on 01 gmc suburban

04 TAHOE Front A/C works great, Rear A/C blows warm. Seems like something isnt shutting the flow of hot water to the back??

I have a 2000 Nissan Xterra and I'm having AC problems. We've replaced the evap. core and expansion valve. I've also replaced the AC lines and the thermo control amplifier. The AC is not nearly as...

99 SAAB 9-5 PROBLEM WITH AC....AC IS WORKING.. CONDENSING WITH NO PROBLEMS ...WATER RUNNING OUT UNDER CAR..PRESSURES ARE 225 HI 35 LOW... NOT GETTING COLD AIR INSIDE...LUKE WARM ON DRIVERS, AND COOLER...

My 1999 mercury villager ac works in the front but no cold air blows in the back. What needs to be fixed?

2001 Chevy Suburban: Front A/C is very cold...Rear A/C blows warm

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93 Ford Aerostar rear ac not blowing cold?

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