What fans are you running?

 

make sure they are runnin on high also..

 

you need new efans, defiintely should not get to 240.

I have the ls1/lt1fans on a 34" radiator and the 6.0 which was HIGHLY warned against..bullshit. if you have the fans set up right, my rig NEVER gets over 210 EVER. not with the 6.0 not with awful stop and go traffic 100+ degrees in tyler, tx and college station tx, and not with pulling a load.

my 28" lt1 fans both running on high, moves as much as 30% more air than my fan clutch. period. The reason gm doesnt use electric fans on hd trucks is nothing to do with cooling capabilities, it has to do with cost, and no space requirement. They have all the space in the world (why cars and small suv's use them) and a fan clutch is quite a bit cheaper for gm to use them.

 

ls1 efans
corey made the harness using 2 pins and their suppose to run on high, but they weren't cutting it last night at all

 

have you checked them to see if they are working right? bad relay or not ground the Pin like its suppose to?

 

i dont have a laptop right now to check if their turning on right.

 

can you hear them kick on?

 

yea but i cant tell if they turn to high and what temps their doing it at.

 

ah ok..

 

You also realize the clutch fan spins slower at idle right? The e-fans move a ton more air than the clutch does.

I think Im going to replace my thermostat before I think my fans are bad. They run on high all the time and its switch controlled in the cab. My thermostat has just under 94k on it I just think it may be time for a new one. My truck will only get that hot when sitting in traffic for awhile with the A/C on 3. Im not too worried. DLT, you have a problem, hope you figure it out