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Air tube - essentially yes...keep the intake air as cool as possible. That is fiberglass wrap around it which I have since covered with the shiny foil duct tape and than wrapped that with black tape rated for engine bays.
That was my thought too but I went through all of my service records and never saw a thermostat replacement listed? I also doubt that Chrysler would have gone from plastic to metal to plastic again in production of the 3.6L. I'm the original owner as well.
Checking that this week sometime when I put the intake on. To my knowledge MOPAR doesn't have a metal one and like I said every video I've seen of 3.6L teardowns has a plastic housing for the thermostat (and that crossover too). I'll let you know what I find and if I can get an angle I'll try to take a picture on part numbers.
Agreed! I think what I found is that the unlocked PCMs don't come with new set points for the fan but rather the accompanying tuner allows you to add custom set points at at least 3 temperature settings based completely on coolant temperature. I honestly wonder if an unlocked PCM would be necessary "if" they would not give you all the other features and just provide a device that gives you 3 customizable fan points and speeds. Along those lines, I wonder if this Jeep controller would be plug and play on our Rams?
I don't know the line pressure settings or anything about the wiring.
You can view it and other A/C values with Alfa OBD. I did that too over the weekend. AlfaOBD for the win (again)...
Not necessarily, the Jeep years may not line up perfectly with RAM years. It may also reflect a change from the Gen2 to Gen3 3.6L after that or a change in fan type on later years (from what I see the Jeeps use two different PWM Fans for). From what I see on their wiring diagrams I'm thinking it will work but it is marketed towards Jeep owners. The ECM/PCM was locked on RAMs in 2015 but these do not have the accompanying tuner to make them function so I think it might work. If I understand the operation correctly, this thing sits on the CANBUS and reads the information it needs for what is happening in the truck (CANBUS signal for A/C on and/or Coolant Temperature), when either of these conditions are met, it sends out it's own signal to the fan to turn on based on it's internal settings and not what the ECM PCM says.
I'd do it if I could find one used at a heckuva price...Now that I understand more about what is occurring I'm not worried about it enough to care (yet).
I didn't see sand until I back flushed the heater core. It seems the heater core trapped most of that stuff. You could probably get a lot out (if any is present) just by draining just the heater core. That way you don't have to drain the whole system again. I used my garden hose to do it but you want to be careful not to apply too much pressure to the core. The hoses come off really easy too.
