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Crusier overheating while idling...

 
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  • 2 Post By ptcruisersteve
  • 1 Post By chuzz
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  • 2 Post By ptcruisersteve
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  #1 (permalink)  
Old 20 Jul 2016, 04:21 pm
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Default Crusier overheating while idling...

I have a 2006 PT Crusier that is overheating while idling but the temp goes down while driving.. Anyone??
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Old 20 Jul 2016, 04:34 pm
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Default Re: Crusier overheating while idling...

Welcome to the forum.

Have you checked to see if the radiator fan is working on both speeds?

Has the radiator fan been replaced that you are aware of?

With the engine cold, start the engine, turn on the A/C and see if the radiator fan comes on automatically.
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Last edited by ptcruisersteve; 20 Jul 2016 at 04:36 pm.
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Old 20 Jul 2016, 04:46 pm
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Default Re: Crusier overheating while idling...

I agree with Steve 100% about the cooling fans. Check them first and then MAYBE check your thermostat. Hell, I'd just replace the thermostat if the car has over 100,000 miles on it.
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Old 20 Jul 2016, 04:50 pm
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Default Re: Crusier overheating while idling...

I will check the fans. Should I start with checking the fuses, or what do you suggest? I know nothing about car engines so any help would be appreciated.
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Old 20 Jul 2016, 04:52 pm
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Default Re: Crusier overheating while idling...

It has 80,000 miles on it.
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Old 20 Jul 2016, 04:54 pm
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Default Re: Crusier overheating while idling...

Just start the car and turn on the a/c. Pop the hood and see if the cooling fan is running. You SHOULD be able to hear it. I'm guessing you're a young lady with good hearing. Not an old fart like me. BUT I still have good enough hearing to know if my fan is working or not. If the fan is working, then you probably have a thermostat that's starting to stick. If the fan's not working, then it's time to check some fuses and relays first.
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Old 20 Jul 2016, 04:57 pm
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Default Re: Crusier overheating while idling...

I just noticed that you said yours is a 2006. They made some major changes in 06 to the electrical systems on the PT's. I won't be able to tell you where the fuses and relays are, as I have a first generation PT. Yours is what's called a 2nd generation and it probably has a TIPM instead of the ECM, like mine. I'm sure one of the guys with a 2nd gen can help you if you need further assistance.
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Old 20 Jul 2016, 05:40 pm
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Default Re: Crusier overheating while idling...

Quote:
Originally Posted by Dannigirl View Post
It has 80,000 miles on it.
Has the radiator fan been replaced that you are aware of? The radiator fan is popular for going out. Its one of the most common parts replaced on the PT Cruiser.
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Old 20 Jul 2016, 08:33 pm
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Default Re: Crusier overheating while idling...

Quote:
Originally Posted by chuzz View Post
I just noticed that you said yours is a 2006. They made some major changes in 06 to the electrical systems on the PT's. I won't be able to tell you where the fuses and relays are, as I have a first generation PT. Yours is what's called a 2nd generation and it probably has a TIPM instead of the ECM, like mine. I'm sure one of the guys with a 2nd gen can help you if you need further assistance.
The Fan relays on 2nd gen PT's are on the front, right on the fan assembly on the passenger side:
OEM on the right, a Rock Auto replacement on the left. The relays are on the fan assembly:


Youtube vid:


If the fan is not working, the most likely culprit is that the brushes are worn out and the relays are working just fine.



This was my diagnosis on my fan. The problem was that the low speed brushes were worn out. That's why jumping the right relay did nothing but jumping the left relay (high speed side) worked. Picture #4 simply put 12V through the high speed brushes.
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Old 21 Jul 2016, 12:05 am
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Default Re: Crusier overheating while idling...

You are definitely correct Ptcruisersteve! When my radiator started acting up it happened without warning...and my temp started rising. I only noticed it when my car started shaking...I pulled into my parking lot at work and blasted the heater to the max and popped the hood. This allowed the temp to slowly lower back to normal after about 15-20min. Then I turned it off and called for a tow.

My dad always told me that if the temperature gauge starts rising, always blast the heater bc it blows the heat off the engine and will cool the temp...

Quote:
Originally Posted by ptcruisersteve View Post
Has the radiator fan been replaced that you are aware of? The radiator fan is popular for going out. Its one of the most common parts replaced on the PT Cruiser.
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