Demolition_x

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.

pickles

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

Demolition_x

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.

REBELoffaLEASH

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.

Lyon

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.

Zab243

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

2KXJJEEP

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