I have two Ram tucks, the first is a (2020 Ram 3500 6.7L HO Limited) and the second is a (2020 Ram 5500 6.7L Limited). The question I have is regarding the Diesel Preheat Message for the 6.7L diesel engine.
On my 2020 Ram 3500 6.7L HO, if the temperature out side is in the low 60's (or below) the truck will have the Diesel Preheat Message come on the dash and it will count down for approximately 10 seconds before the truck starts. Once it starts the diesel engine runs very smooth.
On my 2020 Ram 5500 6.7L, I have never had the Diesel Preheat Message come on the dash. The truck will start immediately as soon as I press the start button. In the last week I have had a couple nights that the temperature has been down to the upper 20's already. When I start the truck, it cold starts with out any issues, but it runs very rough for the first few minutes during start up. I have had all the current recalls completed (W57, Y21, Y17). I have had the truck to the dealer and they actuated the Heat Grid with a Scan Tool. They came back and said everything is checking out correctly regarding the Heat Grid on the Scan Tool.
I have not plugged in the Block Heater on either truck.
Has anyone else had this issue? Are the 6.7L HO and 6.7L diesel engines calibrated different regarding cold temperatures? I am concerned that as winter gets colder I am going to have an issue with the Ram 5500 not starting, or should I even be worried?
Thank You in advance!
(I have attached pictures of the Heat Grid "Wait To Start Times" provided by my dealer below.)
On my 2020 Ram 3500 6.7L HO, if the temperature out side is in the low 60's (or below) the truck will have the Diesel Preheat Message come on the dash and it will count down for approximately 10 seconds before the truck starts. Once it starts the diesel engine runs very smooth.
On my 2020 Ram 5500 6.7L, I have never had the Diesel Preheat Message come on the dash. The truck will start immediately as soon as I press the start button. In the last week I have had a couple nights that the temperature has been down to the upper 20's already. When I start the truck, it cold starts with out any issues, but it runs very rough for the first few minutes during start up. I have had all the current recalls completed (W57, Y21, Y17). I have had the truck to the dealer and they actuated the Heat Grid with a Scan Tool. They came back and said everything is checking out correctly regarding the Heat Grid on the Scan Tool.
I have not plugged in the Block Heater on either truck.
Has anyone else had this issue? Are the 6.7L HO and 6.7L diesel engines calibrated different regarding cold temperatures? I am concerned that as winter gets colder I am going to have an issue with the Ram 5500 not starting, or should I even be worried?
Thank You in advance!
(I have attached pictures of the Heat Grid "Wait To Start Times" provided by my dealer below.)