Question about 2000 Dodge Caravan

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A/c ran cold for two weeks.Then ran hot with high pressure

I have a 2000 grand caravan. I filled with freon two week and it ran cold. But today It ran hot(a/c system) woth very high pressure. I could not see the leak with a uv light. Please help...Shop says compressor but they did not do anything besides a uv test

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  • Richard Scordino May 11, 2010

    Unusually high pressure says there is an internal restriction there.

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Uv test show where dye is leakin but if you have rear a/c as well the lines should be checked to the rear

Posted on Jul 21, 2009

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Posted on Jan 02, 2017

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What is the recommended tyre pressure for winter conditions


the same as during the summer. look on your tires and test the pressure to see if it's close to the maximum psi, they are good, refill if the pressure is troo low.
the air is compressed when it's cold and expands as it gets hot. check your tire pressure every week and especially when the temperature changes like the cold winters and the hot summer.

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The AC on my 93 Buick Park Ave used to blow ice-cold. About a week ago it went out, and so my husband charged it. Yesterday it was out again. We got a freon/stopleak/leakfinder to put in, and the AC...


sorry it has a leak ,only way to fine it is to use the correct machine and vacumn it out ,then turn machine off and listen for a sucking sound ,most likely cause is the flexible hoses/compression fittings or the seal on the front of the AC compressor ,if you still cannot find the leak then fill AC with a special dye and use a ultra violet light and yellow glasses to find the leak .

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Moter will turn over, but will not start?


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2000 Air Conditioning blowing hot


check pressure to make sure you still have freon at schrader valve if so might be a bad pressure switch if not no pressure you have a leak and you need to take it to someone that can do a vaccum pull

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A/C just went out. Worked fine earlier today,


Wow thats hot!! Ok want a quick fix? You sound like ya have a leak so lets see whats going on....buy 3 cans of freon 123a...they come in 1 pound cans...get a low pressure charge hose.
here"s what you will do,
buy 1 can of leak detector freon 134a(1 Lb.)
1 can of synthetic freon 134a with oil(1Lb.)
1 can of 134a freon with sealer
Find the low fill port the fitting will only fit on low side....there are two one is the high one is the low they both have screw off caps use the bigger one...thread the first can with leak detect. in it and fill it through the port, turn a/c on high blow full a/c, jump out the compressor low pressure cut out switch...if you buy your stuff from Auto Zone the guy will show you which switch that is on a diagram he can supply for free just ask, next fill the leak stop can, then the one with a/c oil.
Should be cold, drive a while or until it leaks out and spot the dye coloration coming out of the system showing you where the leak is, bleed off the system repair the leak and refill like I just told you use up to 2 3/4 cans max.
Happy Motoring!!

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1 Answer

AIR conditioner not working again. replaced fan and added freeon(?) after about 1 week no more cold air... what is the problem?


Freon is the common name for the refrigerant R12 and is no longer used. New refrigerant is R134a. Each are as dangerous when it comes to fire, but freon was more dangerous to breathe, as it asphyxiated you while making you so stupid you didn't notice.

More than likely you have a leak in the system if you have no cold air. A state licensed HVAC shop and most mechanic shops will have an A/C evacuation system, which is needed to properly test your system. Simply using a can of refrigerant can easily blow your seals and require you to repair again. It's always best to take it to a shop.

Evac systems will vacuum the coolant out of the system and fill it again to specified pressure. Occasionally the techs will check the pressure & after 3 hours if no change in pressure, you're good to go. Evac system will record how much refrigerant is pulled from your system and you are only charged for what extra is needed to bring to specified pressure... + shop costs/labor.

Stay away from DIY refrigerant in a can and never* depress the stutor valve to check and see if there is refrigerant/ What you do it put moist air into the system (outside pressure is denser/higher than internal pressure of A/C system) when you or your "so-called" mechanic does this, which destroys all* the components in a short period of time.

Get the system repaired ASAP. As little as one humid day out of 2 weeks time is enough to destroy all the components. A closed, sealed system has no* condensation/moisture in it at all

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There is a recall that has something to do with the air/heat system in 2005 Dodge Grand caravans. Recall F01. Here is a link. I had mine done two weeks ago, cost me nothing. My air conditioner was overheating.

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Jul 28, 2009 | 2003 GMC Yukon

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A/c blowing hot air. 3 out of 5 vents are blowing.


With regards to you a/c not blowing cold there are several faults that could cause this. Your compressor may not be working, they may be a restriction in your A/C lines, your compressor and/or evaporator may be clogged, you may have a leak, or i could be something as simple as fuse.

Jun 24, 2009 | 2000 Pontiac Grand Prix

1 Answer

My ac turns on but it only throws hot air it used to throw it cold a few days ago, whats the problem?


Adding a can of freon is not the solution, a system that has too much freon will not work right and there is a chance that you will damage the compressor.
There are low pressure and high pressure switches at work when the system is operating.
You might have a bad switch, leaves or other matter blocking the front condenssor.
Is the system actually full?
It's best to give this problem to a certified A/C mechanic.

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