OK so yeah I'm asking yet another overheating question but i think my case might be a little different.

SOOOO this is whats going on, I have replaced the following parts in my cooling system
-champion 2 row aluminum radiator
-flowkooler high volume water pump
-new T-stat
-3 electric fans with aluminum shroud
-new lower rad hose
-new t-stat housing
-new steel line coming off the water pump going into the heater hose

I filled the block/head up with water thru the t-stat housing on the sensor side not t-stat side then filled the radiator then added cooling system flush solution to help break down rust/scale as i now begin to try and flush my cooling system, i got a funnel/rad cap set up so i can burp the system and let the solution do its thing in the cooling system as soon as the t-stat opens up my funnel fills with nasty dark brown **** then blows steam! it wont burp or take in anymore water till the t-stat closes then it sucks up the whatever water was left in the funnel while it was blowing steam, i add probably about a gallon f water back in the radiator while the t-stat is closed and when it opens up again it does the same damn thing.... so after once again the t-stat closes i top it off with water take the rad cap/funnel off and put on the normal rad cap and go for a quick drive around the block, t-stat opens and the temp just continues to rise even at idle. i get home before it hit the red and sprap down the radiator with the water hose to cool it down, it drops down in temp and i shut her off. the only thing I can think the problem is that it may have a blown head gasket or cracked head. but there is no smoke, no oil in the coolant no water in the oil. i have not yet checked the spark plugs for signs of a blown head gasket. I was wondering if anyone one here has had the same issue and can shed some light on it, thanks guys!

 

You sound like you have the same issue as me. I don't know what I am going to do next. My mechanic/friend said he could look at it for me, but says that possibly someone put cylinder head additive in there and it may be clogging up something in the system.

 

 

When thermostat open raise idle water will go down fill and install cap let return to idle. Best fan set up was from factory. Are fans pulling or pushing air thru radiator?

 

 

 

 

Raising idle and filling and cap install is all done with in 30 seconds of thermostat opening. Is rad cap good.

 

 

Fana are not helping for sure. And new dont mean good.

 

Yikes! Definitely put the mechanical fan back on! Mechanical fans will always draw more air than electric that's the reason why all the diesel trucks use them. My 93 F-150 had a mechanical fan and when that engaged it sounded like a 747 taking off because of how much air it pulled, it only had to fully engage when the car was idling for an extended period of time in 100f heat and it shut off in around 30 seconds. The only electric fan I've seen come close is on my mgm, that e-fan pulls a good amount of air and NEVER has to go to full speed unless the A/C is running.

 

 

Nice! Thanks for posting with the solution.