Question about 2005 Chrysler Pacifica

2 Answers

'05 Chrysler Pacifica A/C Defrost Problem

When driving the expressway for more than 45 minutes to an hour, the volume of air through the vents drops to nothing. I must cyle the compressor off for a couple minutes, then back on to restore flow of air. After the first occurrence, it recurrs at about 20-25 minute intervals.

Driving around town it never happens. It only happens when driving on expresway for more than 45 minutes and only when compressor is running. I've tried using both manual and auto modes and the problem continues.

Dealer service shop is unable to recreate problem and will not put a tech in the car on the expressway for an hour.

Any others have this problem? Any suggestions?

Posted by on

  • 3 more comments 
  • rscheper May 03, 2010

    I just replaced the cabin air filter, but that did not change the status of the problem. I will check gas in compressor.

  • rscheper May 03, 2010

    Also, I was told the problem could be with vacuum principles. Apprently a vacuum is required for the compressor to function correctly. I have no knowledge of this though.

  • rscheper May 03, 2010

    Short of driving the car for an hour on the highway, how could you diagnose this?

  • rscheper May 03, 2010

    I just replaced the cabin air filter last week, and the problem continues.

  • rscheper May 14, 2010

    Th dealer service mgr called to ask me to bring the car back for them to change out a switch inside the A/C unit. I'm not familiar with it by name. Apparently Chrysler technicians told them to replace it. They think if this switch is bad, it COULD produce the problem I have.

    I'm going to do it, but I'm not convinced. I don't know how much diagnostics they've done. I know they will not test drive the car on the expressway for an hour or more to duplicate the problem. Once they replace that switch, I'm going for a long ride.



2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I am having an issue with connecting a recharge freon kit to the valve on my 2005 chrysler pacifica. Is there a secret to this action?

Posted on Jun 21, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Chrysler Master
  • 22,326 Answers

Pollen filter clean?? does AC have the right charge of gas and refilled from weekend mechanic bottle of freon,it may pay to have the system emptied then recharged to the correct weight of gas and try that in case its freezing up after so long .Have had this before with a ford escort that was overcharged with gas ,i also washed the rad inside the vehicle because it was full of **** and after its works fine in fact i have just taken this vehicle for its mechanical inspection some six months after repairing the AC and it was fine

Posted on May 03, 2010

  • 1 more comment 
  • Colin Stickland
    Colin Stickland May 03, 2010

    yes and no the vacumn is only to work the internal flaps inside the heater unit ,its not used in any shape of form for the actual AC mechanism ,too be honest i would need to have my dirty oil encrusted hands on hte vehicle to know exactly whats wrong but yes its possible that one of these flap operating mechanism is playing up or the climatic computer

  • Colin Stickland
    Colin Stickland May 13, 2010

    i would find the problem eventually,but as stated without having vehicle in front of me its very hard to diagnose correctly ,but iam sure its to do with too much gas ,or a dirty AC rad inside the vehicle ,although thinking about it it could also be the exterior rad full of mud and the gas not cooling ,very hard to pin it down without having a drive but when it happens stop vehicle and see how much water comes out of the drain pipe under the vehicle whilst it stands ,if a lot of water comes out after about 20 mins then its freezing up and its thawing out hence the water ,

  • Colin Stickland
    Colin Stickland Jun 21, 2010

    yes their is a valve in the system and its a safety switch which shuts compressor off if the temperature is too high for the gas withing the circuit ,and you could have a faulty switch,which as i stated i would need car in front of me to play with it but if i suspected this then i would run a wire direct from the battery to the compressor then give it a nice long drive to see what happens



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Replaced blower motor resistor in 2004 chrysler pacifica. air came out about 5 minutes and then quit. what else should i check?

If you replaced the Resistor and then it worked properly and then went out again.. You are burning up the Resistor, you need to find the cause. You have a Feedback into the system...

Apr 10, 2013 | 2004 Chrysler Pacifica

1 Answer

My car has no heat back vents blow cold air only i also have no defrost

Possibly air in the coolant system. Some Chryslers have a bleeder screw located at the front of the manifold to bleed off air.

Dec 20, 2012 | 2004 Chrysler Pacifica

1 Answer

A/C issue in Chrysler Pacifica

You will need to remove the dash to get to the duct work just to clean it properly. You may have some damaged blend doors that will need to be replaced.

Mar 12, 2017 | 2005 Chrysler Pacifica

1 Answer

2004 chrysler pacifica heater controls won't change

Under the dash drivers side there are mode motors that control where the air comes from replace bad one or both the bottom one is recirculate. You could take a volt meter and see which one has power when you push button

Dec 23, 2011 | 2004 Chrysler Pacifica

1 Answer

2006 chrysler pacifica air blinder not work only the vent for heating are blowing air i can't get it to switch to defrost or floor vent Could this have something to do with the blower relay switch...

the blower relay switch controls the blower motor,this sounds more like an air blend switch on the heater control head on the dash,not making the switch over in that could be the air blend door motor on the heater duct under the dash on the passenger side.this can be checked with a scan tool that has the capability to communicate with the bcm computer on this car.

Mar 17, 2011 | 2006 Chrysler Pacifica

1 Answer

Car warms up but heat takes a very long time to come on. Blows right volume of air and settings for various defrost,feet,head all work. Temp of air is cold for a solid ten minutes then system works fine....

There are many possible causes for this. A good place to start would be to make sure your radiator fluid is filled up to the cold level when the engine is cold and to the hot level when your engine is hot.

Jan 03, 2011 | 2005 Chrysler Pacifica

1 Answer

Heat/air vents for defrost and feet setting not working. Air only blows from center vents. Is there a vacuum line or electric switch to control the air flow to lower and upper settings on my 2004 Chrysler...

I think your problem is mechanical. There is a distribution box behind thedash where flaps divert air to the specific locations although they may be electrically or vacuum actuated it is probably a mechanical linkage to these flaps or something is creating an obstruction. Check all the other connections while you are in there including any duct work to these areas

Oct 02, 2010 | 2004 Chrysler Pacifica

2 Answers


Check the vent on the filler tubes for bent or blocked areas.
As fuel goes in air must go out.
New fuel tank for $900! ouch!
It is not likely the tank.
But ......if the vents are OK and it is a defect in the tank ..... put a mint used one in.

Aug 25, 2009 | 2005 Chrysler Pacifica

Not finding what you are looking for?
2005 Chrysler Pacifica Logo

289 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chrysler Experts


Level 3 Expert

78936 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

814 Answers

Are you a Chrysler Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides