[nismojunkie]

well with the fact that your going 70mph that means your rpm are kinda up there.
and the fans dont do that much at those speeds.
the problem alot of times is the air dam under your car like a little black plastic peice hanging down.
its job is to push air up to your eninge. so if you lowered your car and broke it off or took it off that would be ot.



or one of your hoses are clogged a little....but not too much to matter at lower speeds.

 

[nismojunkie]

it's possible. What kind of temps are we looking at? How high does it get.

It really sounds like a old/clogged radiator to me.

www.radiatorbarn.com for cheap replacements.

nope.
sound like you are missing your air dam under your car.
it will make your car overheat at high speeds only.

 

[nismojunkie]

i have no air damn on my car and i can run 80mph all day with no cooling problems, hell
when i first got my car it had no fan at all and stayed cool so just check the sensor and
use a process of elimination .

ok
but maybe its because soemthing else might be failing too and its just now starting to show up.

 

[nismojunkie]

well thats why i said to start at the sensor, then work ur way to the more complicated.

yeah ya should find it.
just make sure and check the simplest thing first.
ya know. lol
somtimes its the smallest thing lol