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  #1  
Old 01-26-2011, 08:10 PM
4wdurango 4wdurango is offline
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Durango wont warm up

In the colder weather we have been having lately the durango will not warm up. I have just replaced the thermostat with a 180 degree thinking the old one was stuck open. The old one was a 180 also, but I am having the same issues... would like to get it to warm up so I can have some heat... when its warmer out the durango will warm up, also when we are out 4x4ing and going very slow it will warm up....any suggestions are greatly appreciated. 5.9l 4x4
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  #2  
Old 01-27-2011, 12:45 AM
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Where is the dash gauge at?
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  #3  
Old 01-27-2011, 02:20 PM
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Originally Posted by Neil View Post
Where is the dash gauge at?
stays pegged on the cold side, unless we are offroading or something where we are moving very slow, but on the highway and when its cold out it doesnt move. I know it works becuase it does warm up when its warm out...
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  #4  
Old 01-27-2011, 04:54 PM
AandPDan AandPDan is offline
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It could be a defective thermostat, staying open.

You could always try the old trick of putting something in front of the radiator to reduce the airflow.

I know a lot of guys do it but why are you running the 180? If you want heat you'd get more with the 195?
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  #5  
Old 01-27-2011, 05:15 PM
4wdurango 4wdurango is offline
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Originally Posted by AandPDan View Post
It could be a defective thermostat, staying open.

You could always try the old trick of putting something in front of the radiator to reduce the airflow.

I know a lot of guys do it but why are you running the 180? If you want heat you'd get more with the 195?
I thought it was a defective one, but I just replaced it with a new one and it is still doing the same thing. I dont want to block the radiator, i really just want to get it to run right.
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  #6  
Old 01-28-2011, 09:47 AM
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The 180 thermostat will open up earlier and won't let the motor get much hotter then 180. The stock thermostat is 195 (if memory serves) which allows the engine to get a fair bit hotter. I would advise, like AandPDan said, to go with a stock temp thermostat. At least it wouldn't hurt.
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  #7  
Old 01-28-2011, 03:08 PM
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Originally Posted by petrock View Post
The 180 thermostat will open up earlier and won't let the motor get much hotter then 180. The stock thermostat is 195 (if memory serves) which allows the engine to get a fair bit hotter. I would advise, like AandPDan said, to go with a stock temp thermostat. At least it wouldn't hurt.
I will probably try that, but the durango isnt even getting up to 180 unless im going very slow or if its hot outside. Its not even getting warm enough for the thermostat to open at all....
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  #8  
Old 02-10-2011, 02:20 AM
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Unless........................................the T-stat is stuck open.

Had this issue 6 weeks ago.
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  #9  
Old 02-10-2011, 02:21 AM
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I was told to "seat" the stat before putting it in. I didn't, because I thought it didnt matter. Took it out worked the spring down a few times and put it back in. Prob solved.
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  #10  
Old 02-10-2011, 03:37 AM
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SPC. Brinkmeyer SPC. Brinkmeyer is offline
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im having the same problem in my ram with a 5.9 and the needle dont come off of cold and i have a 195 in mine
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  #11  
Old 02-10-2011, 04:15 AM
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Originally Posted by SPLAudioHz View Post
Unless........................................the T-stat is stuck open.

Had this issue 6 weeks ago.
I guess everything is possible, just replaced the tstat, the old one that came out was a 180 also, thought for sure that was the problem, but the new 180 and its doing the exact same thing.
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  #12  
Old 02-10-2011, 06:44 AM
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I guess everything is possible, just replaced the tstat, the old one that came out was a 180 also, thought for sure that was the problem, but the new 180 and its doing the exact same thing.
Because 180 is too low. Go back to stock.
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  #13  
Old 02-10-2011, 06:45 AM
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Originally Posted by SPC. Brinkmeyer View Post
im having the same problem in my ram with a 5.9 and the needle dont come off of cold and i have a 195 in mine
Your tstat is probably stuck open.
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  #14  
Old 02-10-2011, 06:50 AM
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but im in the same boat as him i just changed it ive never had a problem with Tstats sticking open as often as mentioned...
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  #15  
Old 02-10-2011, 06:56 AM
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Buy/borrow/rent an infrared thermometer and take a temperature measurement at spot where the temperature sensor attaches to the motor. See if the actual temp matches the temp gauge. If the gauge is way off, then replace the temp sensor. If the gauge is spot on, then replace the tstat.
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