Or just drill a hole in the t stat. If any air is trapped in there as soon as you start it the air will get pushed out and find it's way out the hole.
Heater core is the highest part of the cooling system, and also the hardest to get all the air out. The hole in the thermostat will bleed air from the engine much quicker, but, it won't help with that air bubble in the heater core.....
has anyone installed or considered installing a y valve and short hose on the heater hose input/output lines going to the the heater core ( right in front of the fire wall)? The basic goal being to improve the efficiency of the ac cooling by not introducing hot coolant to the adjacent heater core inside the cab. I recall reading about this idea somewhere, perhaps not in this forum. Certainly this would eliminate any air mixing function inside the cab, but more importantly could it create a problem with evaporator icing??
In the near future i will be moving this vehicle from colorado and operating in florida. I presently have the engine out of the truck. I replaced the condenser and high pressure liquid line mainly because i couldn't get the qd fitting off the line at the condenser and had to hack saw it off. I have also replaced the dryer on the ac circuit. At this point it would be rather simple to install said bypass.
I found it: ********.com/threads/heater-core-bypass-for-a-c-performance.192511/
whadayathink??
i know youll like this info '''' im a retired trucker for (40 years ) and all semi's even back to 1965 have a crank valve under the ''hood''' you turn the heat of at begining summer ''' winter comes' turn it back on ''' like i said weve been doing it since i was ''born '''' we thank you ''
Guys ''' when i got my 2002 ram 2500 cummins '' the first thing i did was ( drill & tap ) the therostat housing and screwed in a little valve so i can let air out of the coolent system '''' handy if your in the '' boonies '''.and blow a lower hose ''''
Just my opinion .... since the dawn of the automobile ... more precisely, the introduction of a heater to automobiles in the 1930's ..... there was a shut off valve to the heater.
I actually am using a modern ball valve ... not period correct but it does the job.
Thinking in more simple terms from a simpler time .... we always did this ... shut the heater off when it is not needed.
In a more simple time, all we had was a heater core and a fan to blow heat through a heater core. ... even though you do not have the fan blowing the heat out .... the heat is still there in the heater core.
This is a fancy heater that even has a defrost mode .... you just manually open/close the doors you want.
I'm just suggesting, nothing has really changed ... we have fancy ways to open/close the doors and we can adjust the temperature of the heat coming out .... the heat is still there in the heater core. The heater is on full blast without the fan blowing the heat out. .... Unless you turn the heat off going to the heater.
So what would be different with a newer trucks heater? .... as long as the heat is circulating into the heater core ... the heat is turned on.
They just eliminated the step to actually turn the heat on/off .... easier for the operator. ..... New and improved!
