Leaking or loosing coolant? If it is leaking then where is the leak? If it is just loosing coolant with no apparent leak, then you more than likely have a blown head gasket or cracked head. If there is coolant in the oil, or white sweet smelling smoke coming from the exhaust you definitely have an internal problem. Serious engine damage will occur if you continue to drive this vehicle.
How do you Change a fuel pump on a 1985 Buick Century?
There is no such thing as a 2005 Buick Century
The drain line for the cowl is stopped up or the windshield is leaking.
89 Buick Century uses a timing Chain. Not a belt.
If water is leaking from the cabin air filter on a Buick Century then the seal must be replaced. Replacing the seal requires removing the glove box to reach the cabin filter. Once done, the seal can safely be replaced.
No
I just had the intake manifold gasket replaced on my 96 century yesterday and my bill was $450 but my gasket was only leaking out. If its leaking into your oil it may be more.
Leaking fuel. Get this fixed ASAP.
It could be the heater core leaking.
Yes.
It does not have a timing belt. It has a chain.
You need to have a cooling system pressure test to determine as to where it is leaking now. Repair the leak and it should be okay.