I am in the process of removing my mechanical fan and replacing the with a triple fan set up. My Jeep has always stayed over 200 on normal conditions and occasionally spikes to 235 or so. I was planning on replacing the fans, water pump, thermostat, and hoses (Jeep has 170k miles on it).

Well I took the fans out drained the fluid and flushed water through the motor and radiator. I started to clean the radiator fins. Holy crap how much stuff came out just spraying it with a hose. I stood there for about 15 minutes washing mud out of the radiator. I have always always flushed the radiator after wheeling and thought I did a good job at it but boy I was wrong.

Before jumping to replacing stuff I would highly suggest that you flush your coils with the hose. I am still shocked how much crap came out of the coils. I am still going to flush it some more tomorrow. I would bet anyone who is running a little hot and plays in mud or dirty water radiator is packed with some gunk.

I almost want to put everything back together to see what temps it would run but not after how much of a pain it was getting it out.

Give it a shot all you have to loose is some time and h2o.

 

Mine has a new water pump, rad, and T stat, since then never runs hot. Im guessing you must have a problem somewhere.

 

I think part of the problem was the caked up radiator. That is why I am tempted to see if it runs cooler after flushing the gunk out of the coils.

I am sure it is going to run much better after replacing the pump and thermostat too.

I was just suggesting really flushing the coil out good before replacing stuff.

 

I had this on my YJ. Till I realised it was gunk in the radiator it was too late. Blew the head gasket. Dumb noob move at the time.

Good advise man. I always spray the rad out now after mudding.

 

You're absolutely correct on the the radiator being clean. I just did a write up on the Dual AC fans noting that. No air flow across the coils=no cooling.

Oh, I sent you a msg as well. Let me know if you still need help thursday.

 

3 row rad, all i used and a aftermarket gauge, it runs 180 in 104 degree heat sitting still with ac on. aux fan on switch

 

mine was running hot to and my water pump was cracked so i put a new pump, 3 row rad, t-stat, upper and lower hoses...and now it run under 200 all the time