2018 penstar 3.6 thermostat

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Svetla

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Dear friends. I recently bought a ram 2018 with a 3.6 engine. Run 23 thousand miles. I immediately began to notice that the engine does not warm up at all. After starting the engine, the upper radiator pipe heats up, which indicates that the thermostat is stuck in a large circle.
I have a question.
For penstar 3.6, the thermostat goes in the housing. And it costs $ 150. Can't you buy a thermostat assembly without a housing separately? Or is it non-collapsible and changes in assembly?

And the second question. How could a thermostat die 20,000 miles in a nearly new car?

thermostat.jpg
 

crash68

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How warm does the coolant get? and how far do you drive the truck?
As for why it failed(if it actually has), there's always those parts that fail unexplainably you just had the bum luck.
 

canadiankodiak700

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Dear friends. I recently bought a ram 2018 with a 3.6 engine. Run 23 thousand miles. I immediately began to notice that the engine does not warm up at all. After starting the engine, the upper radiator pipe heats up, which indicates that the thermostat is stuck in a large circle.
I have a question.
For penstar 3.6, the thermostat goes in the housing. And it costs $ 150. Can't you buy a thermostat assembly without a housing separately? Or is it non-collapsible and changes in assembly?

And the second question. How could a thermostat die 20,000 miles in a nearly new car?

View attachment 243989
Thermostat comes with the housing for the 3.6L.
It's $73 cdn, so around $50 usd

Sent from my Pixel 5 using Tapatalk
 
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Svetla

Svetla

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How warm does the coolant get? and how far do you drive the truck?
As for why it failed(if it actually has), there's always those parts that fail unexplainably you just had the bum luck.
The coolant heats up no more than 70 C. The oil does not warm up above 50 C The stove is blowing with slightly warm air
 

csuder99

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Yes the complete housing with thermostat is $22 in the US (Napa parts stores) which is likely the same as the guy on eBay is selling.

The thermostat failing appears to be one of the few issues the Pentastar engine has. My Wrangler just threw a code P0128 "Thermostat Rationality" for the engine warming up too slow but then it went away again. Fortunately the thermostat is one of the newer designs that fails open instead of staying closed and overheating the engine.
 
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Svetla

Svetla

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Yes the complete housing with thermostat is $22 in the US (Napa parts stores) which is likely the same as the guy on eBay is selling.

The thermostat failing appears to be one of the few issues the Pentastar engine has. My Wrangler just threw a code P0128 "Thermostat Rationality" for the engine warming up too slow but then it went away again. Fortunately the thermostat is one of the newer designs that fails open instead of staying closed and overheating the engine.
Could you tell me where can I buy it? they are out of stock on rockauto and ebay. Only the original at an expensive price.
 
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Svetla

Svetla

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There ya go, even better!

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It turns out that it is not suitable for a dodge ram. And I have a problem. I can't buy them anywhere. On Rockauto and ebay they ran out and it is not known when they will be.
 

csuder99

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Could you tell me where can I buy it? they are out of stock on rockauto and ebay. Only the original at an expensive price.

Just the other day I looked up the thermostat for my Wrangler but it turns out the housing is slightly different in the Ram application. The one for the Ram is out of stock at NAPA as well. Sorry.
 
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Svetla

Svetla

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have to look for an analogue. Thanks everyone for the answers.:)
 
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