Re: [Chrysler300] 300 H heating problem

[John Holst <jholst@xxxxxxxxx>]

It would seem that if everything is normal, then 
one could assume that the thermostat is also 
working correctly and nothing should need to be 
checked. My problems in the past has always been 
with a stuck thermostat and resultant overheating 
all the time. No need to check for the hole unless a similar problem occurs.

This was something new to me, and worthy of 
checking when ever a new thermostat is 
installed.  I learn something new and relevant 
with every new thread that comes down. Thanks To All!

John Holst, Iowa (spent the day removing trees 
and limbs from another gang buster storm last night)

At 07:09 PM 7/18/2010, RWestra@xxxxxxx wrote:
>
>
>Thanks to all who had ideas on how to solve my problem of a high
>temperature indication before the theremostat 
>opens. All the suggestions were helpful
>but Ed Lewis nailed it. He suggested drilling out the thermostat bleed
>hole to 3/32. I removed the thremostat and found it had no bleed hole. I
>drilled one 1/8 dia. in the thermostat to let 
>coolant circulate while the engine
>was heating up. This allowed the warm water jacket water to circulate by
>the thermostat during warm up and solved the problem completely. The
>temperature gage now rises to the operating temperature then holds there
>indefinetly.
>
>I believe prior to this the hot water jacket coolant was kept in the jacket
>until it was hot enough to conduct to the thermostat. While this was
>taking place the jacket temperature overheated. Once the thermostat opened
>everything was fine. I drilled the hole 1/8 which was 1/32 larger than Ed
>recommended but I did not want to take that thermostat out again.
>I was wearing out the bolts on the A/C compressor.
>
>Thanks again to everyone.
>
>
>Rolland Westra
>
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>
>
>
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