engine collant leak
 

i have a 1993 buick lesabre custom edition, n just recently i noticed that engine coolant was coming out of the mass airflow sensor, no this confuses me because of the vacuum that is produced when driving the car pulls everything in n the coolant is coming out of the throttle body need help
im thinking a broken gasket

mainifold
 

check manifold cover, it might defective and replace it.

Quite a few Buick engines are having a problem with the upper intake plenum (manifold).
The EGR system burns a hole in the plastic manifold and you experience coolant loss and eventually engine problems. Don't waste any time getting this corrected it could be quite expensive up the line. If this is the case with your vehicle , it's not too bad a job and doesn't have to be too expensive to correct if caught early. I am not positive this is your vehicle's problem, but it should steer you or your mechanic in the right direction if it is.

Also I'm pretty sure that coolant does circulate through the throttle body .