Engine heating up do to hot weather

[nasty745]

I was driving my hummer today in 109 degree weather and my engine started to heat up almost to the red ! Is there any recommendations to keep it cooler ? I'm about to drive it through death valley where its extremely hot and I might be pulling a small boat on top of that... any advice would be greatly appreciated.
Thanks Tom

[VegasMike]

I live in Vegas where it has been consistently over 110 this week peeking at 114 today and my H2 never got over the 200 mark on both gages.

Are you sure you have water in it?

[LoJac963]

mine is an 06 in AZ, temps are around 115 almost everyday here and I never break the 200 mark with the AC blowing. What year is yours?

[fyr145]

Originally Posted by nasty745

I was driving my hummer today in 109 degree weather and my engine started to heat up almost to the red ! Is there any recommendations to keep it cooler ? I'm about to drive it through death valley where its extremely hot and I might be pulling a small boat on top of that... any advice would be greatly appreciated.
Thanks Tom

You could check several things............

Water pump for leaks
Thermostat
radiator fluid level and condition
Overflow coolant tank level
Hoses for blockage

[IRA51]

Don't know what year you have ,but if it has a clutch fan make sure it is working .

[glennf1]

Originally Posted by IRA51

Don't know what year you have ,but if it has a clutch fan make sure it is working .

X2 that would be my guess

[nasty745]

Mine is a 2005 it has no leaks and resevoir is filled ?

[fyr145]

Originally Posted by nasty745

Mine is a 2005 it has no leaks and resevoir is filled ?

I'm kind of leaning toward your thermostat being stuck closed. If this is true, then your engine would het up and get hot becuase the thermostat isnt opening up to let the "cooler" water from the radiator into the engine to cool the motor back down and circulate the hot water back to the radiator for another cooling.

I could be wrong, but if you have no leaks on the ground, then the coolant has to be in there somewhere, its just not getting moved around well enough.

If it were the water pump, you'd see that leak from the front of the motor. Most water pumps have a "weeping" hole that helps to signal this.