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Old 01-14-2008, 09:18 AM   #1 (permalink)
chrisgarrett46
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Overheating PT Cruiser

My Pt Cruiser is maintaining normal engine temperature, but the heater blows cold air. The wierd thing is that the heater will work and then not work. Most of the time it doesn't not work. I have swapped out the thermostat to no avail. Why would it not work, then work, then not work. I have tried bleeding air out of the system. I was thinking I would run the car with the thermostat out and the cap open to remove air.
Any ideas?
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Old 01-14-2008, 10:52 AM   #2 (permalink)
JohnLarkin
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Try topping off the coolant. Even barely below level, this condition can occur.
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Old 01-14-2008, 11:04 AM   #3 (permalink)
chrisgarrett46
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Quote:
Originally Posted by JohnLarkin View Post
Try topping off the coolant. Even barely below level, this condition can occur.
It doesn't appear to be low.
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Old 01-14-2008, 11:04 AM   #4 (permalink)
4CE FED
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Maybe there is an inline heater valve like the GNs have that is seized?
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Old 01-14-2008, 11:16 AM   #5 (permalink)
chrisgarrett46
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GN's have an inline heater valve? Learn something new everytime I come here. Where do you suggest I look? In order to access the heater, it is necessary to remove the entire dashboard.
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Old 01-14-2008, 03:00 PM   #6 (permalink)
Electrajim
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Quote:
Originally Posted by 4CE FED View Post
Maybe there is an inline heater valve like the GNs have that is seized?
I think he means the "Heater Control Valve" that stops the flow of coolant to the heater core when the AC system is set to "MAX".

Just a guess what he's thinkin however.

The PT Cruiser equivelent may be a Rube Goldberg lookin device.

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Old 01-14-2008, 03:17 PM   #7 (permalink)
chrisgarrett46
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Quote:
Originally Posted by Electrajim View Post
I think he means the "Heater Control Valve" that stops the flow of coolant to the heater core when the AC system is set to "MAX".

Just a guess what he's thinkin however.

The PT Cruiser equivelent may be a Rube Goldberg lookin device.

ElectraJim
Okay, I gotcha. Hmmmm, not sure if I've seen one on the PT. I'll check it though. I suppose it would be under the hood along the coolant lines. I hope it's not under the dash.
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Old 01-17-2008, 02:19 AM   #8 (permalink)
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My GN has a Similiar Looking Device against the Firewall in the Engine Compartment on the Passenger side........

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Old 01-17-2008, 09:32 AM   #9 (permalink)
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might try to take the heater hoses loose and flush out the heater core. sometimes if the valve has the water stopped all summer they will stop up.
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Old 01-17-2008, 09:37 AM   #10 (permalink)
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Where's SW to diagnose this problem in 2 seconds?
maybe he doesnt do Chrysler...
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Old 01-17-2008, 10:05 AM   #11 (permalink)
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Quote:
Originally Posted by Gothmog View Post
Where's SW to diagnose this problem in 2 seconds?
maybe he doesnt do Chrysler...
can you blame him?
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