i have a 96 sable here is the problem my temp gage rises when i am parked or idling when im driving its fine ive checked the fuse it was fine the fan is working anyone have any ideas

Is it a 3.0 12v or 24v. ?

i think its a 3.0

12 or 24 valve?

its a 12 valve

Ok, you may have a dirty radiator try cleaning the fins out with a hose. If that does not work the cooling system passages may be clogged and need to be professionally cleand and possibly a by pass hose will need to be added to the cooling system.

the radiater fluid is filthy so i guess that is the problem

I would definatly take it to a dealer and have it flushed and check for the possible by pass hose then

cant i flush it myself

You can do that but if the vehicle needs that by pass hose the concern will return after sometime.