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PT Cruiser Air Conditioning Questions/Problems



  • Help 06 p/t 50 amp fuse was blown, engine heating and a/c not working, looks like high speed and low speed relay on right side of fan shroud, no power to either, new fuse did not blow,where does the power go to after ther fuse. help
  • I know the fan plug can be seen from underneath the front bumper, roughly center yourself between the driver side head light and center grill line. Looking up from the ground the plug will be easy to spot on the fan housing. You can chase the wires toward the fuse panel which are aligned with more wires. You may try check the High speed fan relay. Currently my fan runs all the time with NO Low Speed Relay in at All. If working properly the High Speed Relay should overide and cool the radiator all the time. My fix will be a new Heat/Control Panel in the dash, not too pricey on Ebay.
  • :confuse: I noticed yesterday that when I turn on my air conditioner, a gurgling sound can be heard. Later, after a three hour drive, I found that my passenger side floorboard is wet! Also, water can be heard sloshing around when I turn curves. I have no idea what to do about this! My first thought was that water has somehow gotten into my car since it has been raining in my area for weeks, but that just seems unlikely. Any idea what my problem might be?
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    You may have a plugged AC system drain. The evaporator and condenser remove moisture from the conditioned air and that water usually drains away while you drive. If the drain is plugged or damaged, the water collects inside the system.

    Have a mechanic who is skilled with AC check the drains.

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  • You were absolutely right! There were leaves all in there, and when the mechanic popped off the hose, he quickly found the problem.

    Thanks for calming my nerves. :-D
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    You're very welcome - glad it was just that! :)

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  • Is your fan still running with NO Low side Relay in it? Have you had any problems while running like this?
  • My 06 PT Cruiser was diagnosed needing the radiator fan module, will this eventually cause the car itself to break down, or lead to other problems? My car has never overheated, the AC just shuts on and off in traffic, and now that it's getting into fall, I don't even use the AC.
  • when i start the a/c the fan doesn't work,it only works with the engine.
  • That happened to our 2006, but it's not smoke, it's like a a mist. There are times it can actually look like snow is coming out of the vents. We we looked under the hood there is a white icey covering all over the exterior to the AC lines. We still don't know whats wrong. It happened during the summer and figure it will cost a lot to fix, and we don't have the money.
  • 3dpsycho3dpsycho Posts: 2
    I put my gauges on hi and low ports. Compressor kicks in and press increases on suction and discharge. I here switch on dryer closing and opening. Not sure if condenser coil fan is coming on. Is there a press switch that turns the fan on? Also as the press increases the engine starts to strain. Car is in park. System been vacuumed and charged, 1.2 lbs of 134A.
  • teedaladiteedaladi Posts: 1
    Last year i had problems with my air conditioner, and had to replace the fan which cost me over $1200, this year my air conditioner is blowing hot air, I had the coolant check and it was full. I have carried my car back over 4 times to the dealership where i purchased it. After leaving it there for 5 days, i have the same problems. Is there anybody out there that can tell me what to do. Someone mentioned the switch is bad, and i informed them, but they refused to fix it. Please someone reply and let me know what to do.
  • jimwelsh1jimwelsh1 Posts: 4
    Hello. Does anyone know how to bypass/troubleshoot the A/C fan switch and A/C fan relay on a 2006 Chrysler PT Cruiser? Apparently, it must be a trade secret or something, because I have searched the internet, Chrysler forums, asked for advise on the local craigslist, and nothing. Not even a whisper of advise. Oh, sure, the dealers and local repair shops will do it, only if they can replace the whole system, not troubleshoot it like I ask.
    Thank you.
  • aptosaptos Posts: 2
    After running either the heater or A/C for about 30-45 minutes and internal vent door begins to close. I can hear the fan running at different speeds I select but the volume greatly reduced. After an hour off the same thing happens again .
    Are these vent doors operated by vacuum line or electrical drive?
  • bill1786bill1786 Posts: 1
    Sir I agree with you you are absolutely correct i appreciate your suggestion
  • tobor1111tobor1111 Posts: 3
    My ac works intermittently, but mostly it doesn't work at all. I paid to have it analyzed and was told that the compressor clutch module is not working. They said it was $600 to replace and then Chrysler may have to program it. Chrysler would not say how much that would cost. Does this make sense? I can't seem to find out anything about such a module and where it is physically located. Is it part of the compressor or clutch assy? Does anyone know? I would really appreciate any information.

    Thanks in advance.

  • bthompson40207bthompson40207 Posts: 62
    edited July 2010
    After three visits at two different repair shops to repair the air conditioning in my 2007 PT, here is what finally worked:

    First, one shop told me that the computer module would need replacement. I did not even ask how much that would cost. Another shop told me that the entire radiator fan and cowling assembly needed replacement. The shop wanted $680 to perform the job. The reason given for the high cost was the $425 price of the original Chrysler part. I told the shop "no thanks" and I found the assembly on line (brand new) for $88. It was easy and fairly straight-forward enough to replace the assembly myself. After replacement, the A/C still did not work. There appeared to be no change in symptoms.

    Next, after more on-line post readings, I paper-clipped the contacts in the Low-Pressure Switch connector that sits atop the accumulator. After starting the engine, I immediately felt ice cold air for the first time in two years. I found the switch in stock at my local Auto Zone for $29 (Santech #MT1191). It was super simple to replace. No freon vacuuming is required - just unscrew the old switch and screw in the new one. The wiring connector easily pulls off and the only tool requited to remove and replace the part is a small crescent wrench or a half-inch wrench. It is a ten-minute job. Within an hour of the paper-clip diagnosis, the problem was repaired and the A/C has been working perfectly ever since.

    So, before you shell out big bucks on other "remedies", pull off that LPS connector, use a small piece of wire or paper clip and short the two contacts in the connector (do not let the jumper short out against the engine or body metal). Then, see if the A/C is working. You may want to take it for a full test drive before you decide. I did make sure that I had a full charge of freon before I tested the LPS.

    Good luck!
  • Hey where did you find the part for $88.00? I took my 2007 PT to the dealership and they told me $800 to fix it!! Said to replace the Fan. And you say that might not even be the problem? My A/C works as long as I am moving but when I am stopped, it starts to blow warm air and the RPM's drop - bog down as sounds like compressor is kicking in and out? Any additional Info greatly Appreciated!!
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