95 525i coolant issue

[dunelly]

While driving on I295, a beeping occured, the car told me it was overheating and coolant was low. I pull over asap, lift the hood and notice the cap fell off.
I change coolant the other day and might've not tighten it too tight. (my dumbass fault)
the cap was still under the hood, so we filled it up with water and started on our way again. After 30 seconds it was beeping and the same thing popped up, low coolant and hot. so after that we got it towed home via AAA. I guessed the coolant evaporated right after.

This was after 2 hours on the interstate at 4.5k RPM. Should putting more coolant solve this problem or should I be suspect of something else?

[Gregs///M]

Make sure you are bleeding the cooling system everytime you add coolant, or you will overheat. read "bleeding cooling system" at www.bmwe34.net

[dunelly]

bmwe34.net/e34main/Maintenance/Engine/Coolant%20replacement.htm
I'm not sure what bleeding means, can u explain further thnx?

[16valex]

Every cooling system has some type of air bubble in it. Most system will self bleed which means get rid of the air slowly but eventually, however, BMW cooling system are not self bleeding, so therefore you must get rid of the air in your cooling system so that your cooling system will work properly. Air is not a good heat transfer material, but your cooling liquid is.

You must find a procedure how to do this on your BMW.

Good luck

[dunelly]

i understand now. Now I just need to find out where everything is in the car. THe manual doesn't show where the bleed nut is, nor where tstat or fan clutch. Thnx for all the help