Greetings Everyone, I am writing about My 2000 R/T 5.9 with concern about the cooling system. At this time the truck has no heating system so for now I'm by passing the heater. Here is My question after I have been doing some work like replacing a water pump everything been put back together and its time to refill the system and get the air out do I add the new coolant at the radiator cap, or the coolant recovery reservoir ? And having no heater how do I get the air out of the system ? And will having to much extra coolant in the reservoir do damage ? Thanks .

 

If the heater core is bypassed, don't even worry about it for now.

Fill the radiator, burp the system, then add coolant to the overflow bottle to the 'full hot' line.

Drilling a small hole in the thermostat, if it doesn't already have one.... or the little 'jiggler' valve, makes getting the air out of the system easier.

 

When I got my last thermostat (Stant), I researched whether they're designed to bleed air cause I didn't see any holes or a jiggle pin, etc. Turns out all thermostats have that ability built in, whether you can spot it or not.

 

Thanks Guys for Your input. I've been getting the air out by squeezing the upper radiator hose with it idling as its warming up more and more air is coming out which requires more and more coolant so by the time the thermostat opens all the air is out but all the extra coolant I used to get the air out makes its way to the reservoir which fills up 3/4 of the tank which is twice as much as called for. So then when I open up the drain plug to drain it down to the proper level .Its once again back to over heating .With the reservoir being so full it doesn't over heat and seems to run fine but I'm just not so sure that that's, the thing to do ..

 

 

'Fat Bottom Girls You Make The Rockin World Go Round' Bohemian Rhapsody , Queen 1978. , Queen with Paul Rodgers , 2005

 

Okay, when you're bleeding air, the front end should be higher than the rear, for the air to rise. Jack it up, put on ramps or on a hill. Also, you're seeing the normal operation of the overflow tank. As the engine heats the coolant, it expands and flows into the overflow bottle, as it cools, it takes the reverse path back into the radiator. Check your overflow in the morning when cold and it should be back to normal level.

https://mechanicbase.com/coolant/how...ow-tank-works/

 

I disagree! Look on the second gen ram forums, Seems there is somebody posting about this problem every other week. I even suggested there should be a sticky on the issue there are so many posts on it. If it doesn't have the jiggle pin drill a small hole 3/16-1/8 and you will never have a problem again.

 

Jiggle pin or bleeder valve.... https://www.gatestechzone.com/en/new...tat-jiggle-pin ... also bleed notch, like my Stant.

 

I just did my bottom end, flushed and such.

I just filled it and the bottle, watched gage, and took normal little tripss and it filled itself just as designed.