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Thermostat temp

Posted

Hello everyone, I'm new to the site and this is my first diesel. I just picked up a 99 2500 long bed 4x4 5 speed manual. Truck has 310k on it and according to the service records the truck has been maintained well. My question is what temp should the thermostat open up at? When driving from cold the thermostat goes past 190 to probably 215 or 220 then opens up and drops back down to 180-190. It never over heats, but it is the initial opening that makes me wonder if the thermostat is sticking. When it goes over 190 the cab has a little bit of a sweet antifreeze smell but I have checked under the hood and there are no leaks. It just smells hot when it first opens up. I can drive the rest of the day and not have that issue at all. Is this normal for this truck? Truck has the idiot fuel pressure light and a 4" exhaust from the cab back. 

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  • leathermaneod
    leathermaneod

    First of all, I just want to point out that the antifreeze smell in the cab could be your heater core leaking. You can check the passenger side floor and firewall to see if you can find anything wet w

  • Mopar1973Man
    Mopar1973Man

    Take notice to my coolant gauge here I've marked the green area as normal. You can see the open temperature of my thermostat. So I would have to say your thermostat is sticking.    

  • Me78569
    Me78569

    I think the limits are actually 162.5 and 222.5

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The engine temp gauge "normal" area is 160*F and 220*. :thumbup2:

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    • Like 1
    • Owner
    1 hour ago, KATOOM said:

    The engine temp gauge "normal" area is 160*F and 220*. :thumbup2:

    Close enough. 165 and 225 is the actual numbers.

    15 hours ago, Mopar1973Man said:

    Close enough. 165 and 225 is the actual numbers.

    Hey now.....those figures I posted were from your findings a few years ago based on your high techy machinery.  Dont go changing things up on me now..... :think:

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    • Like 1
    • Owner

    When i get home I'll dig up the article. Pretty sure my number are right. You know how old age plays tricks on your mind. :think:

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    • Like 1

    And stress.....dont forget stress.  You're certainly dealing with some right now too.

    • Like 1

    I think the limits are actually 162.5 and 222.5 :shifty:

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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.