What would cause a 1998 Grand Am to blow anti-freeze all over the motor?
I would suspect a busted hose or radiator. Should be very easy to find the source of the leak.
If it is motor oil in the anti freeze, then it is either a cracked head, cracked engine block, or a head gasket blown. If it is transmission fluid in your antifreeze, then the radiator is leaking from the transmission cooler ----- although usually that would cause antifreeze to be in your transmission fluid.
I would say you have a bad water pump, thermostat or a bad hose depending on where the antifreeze is spraying from. If the antifreeze is coming from the timing cover area you have a bad pump, if it is coming from the front area of the motor I would say bad hose, if you are hearing a gurgling sound from the radiater I would say bad thermostat.
What would cause the wipers on a 92 grand marquis to only work when set to the highest level and then shut off?
If you have antifreeze in your motor oil, There are only 2 things that can let this happen,#1 cracked cylinder block cause? either the motor got extremely hot like ran it totally out of coolant -water in the radiator and got the motor very hot. # 2 (most likely) got the motor very hot and blew the head gasket's are the only two ways I know of to get coolant mixed with your oil, Besides…
What is the most probable cause of Antifreeze leak in the lower front section of Pontiac 400 cubic inch motor?
Probably the waterpump. Make sure the antifreeze is actually coming from the lower part of the engine. If so, I would agree it's the water pump. Pontiacs also use a rubber grommet seal located at the upper driver side of the engine. It is where the timing cover and manifold mate. This is a common cause of water leaks in a Pontiac. The seal gets brittle with age and needs to be replaced.
If there is a small drip of antifreeze under the car behind the right front tire, this could be from the evaporation hose. Antifreeze may drip after the car has been run with the air conditioning on. If the air conditioning was not on just previous to noticing the antifreeze, it would be a good idea to check all of the hoses for leaks.