LOLOLOL

I might just have a few objections to being cut in half though.......

 

Well, I flushed the heater core, both ways. I drove it around for a little while, and the heat did seem to be quite a bit stronger, but then again, it's not nearly as cold today as it has been. It was in the mid 30s today, whereas it was below zero when I was having the most trouble. At that point, it wouldn't even keep the windows defrosted.

I took temps on all the hoses after it was good and warmed up, and the upper radiator hose, and both heater hoses were in the 170 ballpark, while the lower radiator hose was only about 50. Do you suppose the radiator is actually efficient enough to drop the water temp that significantly? If not, I wonder if I have a circulation issue.

I picked up a sheet of plywood today, and I'm going to make an insert to go between the tranny cooler and the radiator to block off the air flow. Hopefully that will help keep things up to temp. As it is now, I can actually feel the temp drop significantly in the heater when the thermostat opens up, and after that, it never gets quite as warm again.

 

Exact same issue here! Flushing entire cooling system right now, and replacing t-stat, also gunna disconnect ac condenser wire and block part of my rad. Ahhh the joys of living in a sub zero climate!!!

 

I think the trick is to flush the heater core in both directions, ending with reverse flow. Having a second warm body to assist, makes life easier. When you are satisfied with the final back flush, hook the hoses back up, and do your best to lose as little water as possible from the lines.

 

Did that now getting **** ready to put back together... Gunna mix it about 60/40 maybe a little thicker due to cold temps here..

 

Well I cut a piece of 1/2" plywood 20.5" tall by 31.5" Wide, and primed and painted it gloss black. It fits like a glove between the tranny cooler and radiator, and completely blocks the airflow to the radiator. It works great! It's keeping the water temp at right under 200 degrees when fully warmed up. That lower hose is also getting hot now. I'm sure I'll have to keep a close eye on the temp gage if the outside temperature starts to come up. The nice thing about this setup is it's super easy to pop the hood open and slide it out if need be. Takes two seconds.

 

I have this same problem and i've done everything but change my heater core, which I doubt is the problem since the inlet, outlet and heatexchanger areas are all HOT!! I've swapped my thermostat multiple times, flushed the entire cooling system. No leaks. I live in Anchorage AK and it can get pretty chilly here. I've thought of blocking off some flow to the radiator... They're sooo huge! this must be the problem.

 

i did mine like 2 maybe 3 months ago at a self car wash kind of illegal but the sprayer is like perfect for the job not to strong to destroy the heater core but strong enough to knock the muck out of it heat works fine that was horror on the hands tho but worth it