Question about 2008 Dodge Grand Caravan

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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

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  • Claude Kayser
    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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  • Dodge Master
  • 14,585 Answers

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

Posted on Jul 29, 2015

Testimonial: "no that did not work either"

  • 1 more comment 
  • 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

  • Randy Ohler Aug 01, 2015

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

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

? 15:00
www.youtube.com/watch?v=Fz2obM-laOA
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 ...

Posted on Jul 29, 2015

Testimonial: "i want it to work not block it off"

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Related Questions:

1 Answer

So I can just replace ac compressor an bypass heater core an ac should work for 1991 Lincoln Town car


If the compressor is the problem A/C should work. But I work with idiots. I replace the compressor, expansion valve and dryer. And clean the system out. They replaced the compressor. then the expansion valve. then did it again after they clean the lines out, Then again, because the dryer held to much metal from the compressor going bad. And yes, you can bypass the heater core. But if the blend door actuator is bad, it won't be cold.

Jun 25, 2016 | 1991 Lincoln Town Car

1 Answer

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

May 13, 2014 | 2001 GMC Yukon

1 Answer

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.

Sep 10, 2012 | 1995 GMC Suburban

1 Answer

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.

May 25, 2017 | 2004 Chevrolet Tahoe

1 Answer

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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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


Aug 03, 2010 | 1999 Saab 9-5

2 Answers

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

May 20, 2010 | 1999 Mercury Villager

1 Answer

2000 Dodge RAM no HEAT/ New heater core / AC evap.


There is a actuator on the right side of your leg while sitting in the drivers seat under the dash. It has a plastic rod for actuation manually actuate this diverter and should be the problem.

Oct 14, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

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

Sep 06, 2009 | 2003 Chevrolet Suburban 1500

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