EGR Cooler Leak and GDE Hot Tune

EGR Cooler Leak and GDE Hot Tune

This is a discussion on EGR Cooler Leak and GDE Hot Tune within the RAM 1500 Diesel Mechanical forums, part of the RAM 1500 Diesel Garage - RAM 1500 Diesel Mechanics Corner category; I know there are alot of coolant leak threads on here but this question pertains to trucks with the GDE Hot Tune. My 2016 eco ...

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Thread: EGR Cooler Leak and GDE Hot Tune

  1. #1
    RAM Jr Member TEXAG's Avatar
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    Exclamation EGR Cooler Leak and GDE Hot Tune

    I know there are alot of coolant leak threads on here but this question pertains to trucks with the GDE Hot Tune. My 2016 eco has had a very slow coolant leak since I bought it used with 24k miles 7 months ago(just now realizing this). It was low when I bought the truck so I had a dealer refill it. I installed the GDE hot tune same month I bough the truck.

    6 month later I noticed my A/C heater would not blow hot air so I took it in and found out the coolant level was very low, dealer said the EGR Cooler is leaking and wants $2,500 to install a new one since i am not covered by the 36k mile warranty since the truck had 36,050 miles when I took it in. Horrible luck, and I didn't think to take it in before hitting 36k miles.

    I currently have a claim in with FCA to see if they will replace it for me under good faith since I paid to have the truck fully inspected at 25k miles and the leak was not found even though the coolant level was super low.

    Here's my question: If they dont replace the egr cooler for me, can I just monitor the coolant level and add coolant when needed and not worry about fixing the leak? I only have 36k miles and am not ready to delete as I do not want to lose the motor warranty if the engine fails. The hot tune turns the EGR off right? So does running the truck long term as-is run the risk of damaging the dpf or engine.

    If it does, I guess I should just delete and have $10k stored away in the event of engine failure? Worried about selling the truck once deleted down the road, Im in texas so Im sure someone would buy it. lol. Thanks for any info and advice!

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    RAM Silver Member Bounty Hunter's Avatar
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    You can do a Stage 1 EGR delete to remove the diffuser tube if the coolant is leaking from the EGR into the intake. Do a Stage 2 EGR delete to remove the entire EGR unit if it's leaking coolant into the exhaust. Both can be reversed in the event of an engine failure.

    Coolant will be detrimental to the DPF and SCR if allowed to continue to leak into the exhaust.

    It's possible coolant is leaking at the turbo. The exhaust downpipe would need to be lowered to inspect for coolant.

    I recently went with the Stage 1 EGR delete to see if it stops the coolant loss in my '16. Stage 2 will be the next step for me. Get mine from CFT Performance INC. .
    2016 Laramie CC 6'4", Delmonico Red, GDE Hot tune and Trans tune, External oil cooler, PPE Trans pan

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    RAM Regular Diesel78's Avatar
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    Quote Originally Posted by TEXAG View Post
    I know there are alot of coolant leak threads on here but this question pertains to trucks with the GDE Hot Tune. My 2016 eco has had a very slow coolant leak since I bought it used with 24k miles 7 months ago(just now realizing this). It was low when I bought the truck so I had a dealer refill it. I installed the GDE hot tune same month I bough the truck.

    6 month later I noticed my A/C heater would not blow hot air so I took it in and found out the coolant level was very low, dealer said the EGR Cooler is leaking and wants $2,500 to install a new one since i am not covered by the 36k mile warranty since the truck had 36,050 miles when I took it in. Horrible luck, and I didn't think to take it in before hitting 36k miles.

    I currently have a claim in with FCA to see if they will replace it for me under good faith since I paid to have the truck fully inspected at 25k miles and the leak was not found even though the coolant level was super low.

    Here's my question: If they dont replace the egr cooler for me, can I just monitor the coolant level and add coolant when needed and not worry about fixing the leak? I only have 36k miles and am not ready to delete as I do not want to lose the motor warranty if the engine fails. The hot tune turns the EGR off right? So does running the truck long term as-is run the risk of damaging the dpf or engine.

    If it does, I guess I should just delete and have $10k stored away in the event of engine failure? Worried about selling the truck once deleted down the road, Im in texas so Im sure someone would buy it. lol. Thanks for any info and advice!
    My opinion, sometimes dealers are miss diagnosing the EGR cooler leaking. Check your overflow tank that it isn't leaking from the bottom hose underneath the overflow tank.

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    RAM Jr Member TEXAG's Avatar
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    Here’s a quick pic of my egr, i believe this is similar to other people with this issue
    Attached Thumbnails Attached Thumbnails EGR Cooler Leak and GDE Hot Tune-3e626e4e-8749-46ed-be62-b1bb0aa0f6dd_1518490212143.jpeg  

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    RAM Jr Member TEXAG's Avatar
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    Quote Originally Posted by Bounty Hunter View Post
    You can do a Stage 1 EGR delete to remove the diffuser tube if the coolant is leaking from the EGR into the intake. Do a Stage 2 EGR delete to remove the entire EGR unit if it's leaking coolant into the exhaust. Both can be reversed in the event of an engine failure.

    Coolant will be detrimental to the DPF and SCR if allowed to continue to leak into the exhaust.

    It's possible coolant is leaking at the turbo. The exhaust downpipe would need to be lowered to inspect for coolant.

    I recently went with the Stage 1 EGR delete to see if it stops the coolant loss in my '16. Stage 2 will be the next step for me. Get mine from CFT Performance INC. .
    Thanks for the info! Hope this fixes yours. Since I have the hot tune already this will probably be my next step as well. Would be easy to redo in the event of engine failure.

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    RAM Wizard Brokedownbutgood's Avatar
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    EGR Cooler Leak and GDE Hot Tune-7b4aa20b-52b0-47a1-8259-a1623d312428.jpegEGR Cooler Leak and GDE Hot Tune-8679315e-589d-450b-9b5c-e7bdc1d3e6de.jpeg

    That is normal its not actually a leak just oring grease sweating off the orings. Usually the egr cooler well leak internally.
    Bat Koce, Diesel78 and malibubts like this.

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    RAM Ninja shaggn85's Avatar
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    Quote Originally Posted by TEXAG View Post
    Here’s a quick pic of my egr, i believe this is similar to other people with this issue
    that pic is NOT showing an egr cooler leak. thats residual assembly grease. covered extensively on this forum.
    MR. TED likes this.

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    RAM Jr Member TEXAG's Avatar
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    well due to the fact I put the wrong coolant in the truck. I took it to a different dealer in town today and they flushed it and tested for leaks and found nothing “out of the ordinary” they said my ear probably leaks a little bit but that wasn’t grounds to replace it. Looks like the first dealer I went to was try to rip me off.

    Looks like I am okay for now but will be buying the stage 1 EGR delete soon anyway. It’s cheap and easy so might as well do it. Then if it starts losing coolant quickly I will delete the whole EGR.

    Thanks for the responses! Had no idea the stage 1 EGR delete was so simple.
    Bounty Hunter and Diesel78 like this.

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    RAM Regular Diesel78's Avatar
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    I have a very strong feeling that many EGRs have been replaced when they were perfectly fine. If you still have coolant lose and unsure from where, the overflow coolant bottle maybe loosing some coolant out the bottom vent tube.
    BrianS likes this.

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    RAM Bronze Member Kazimodo's Avatar
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    Texag , keep the bottle at the right level , well documented that once a certain level is reached in the bottle
    , it will stay at that level , but your engine and whole cooling system will keep going down , if you add all the way to the " cold full line "
    then after use it is way down , just means the lower coolant level in system came to suck what it could from the bottle , just add until
    the system , Rad , and engine is full , then you will really know how fast it is going down .
    ..
    agree with other , your picture does not show coolant leaking OUT of the EGR , could still be leaking Inside , out of view.

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