== == I do believe if you hear a knocking noise that your crank shaft could be failing. Which means you will need a new engine. Have it checked out. Replace the harmonic balancer they will make a bad knocking noise. When you start it and the oil light goes out and it knocks, this is what is wrong with it.
FUSE!
check crank sensor
The most common cause would be low refrigerant.
It could be the spark plug wires that's what was wrong with mine.
The 98 would have R134a
Something can be taxing the work of the alternator, or the alternator can be weak and needs replaced.
No, it will not cause the engine to knock.
Well for more information on Used Buick Park Avenue you can google or yahoo it. That is what I would do first, then I would read what sites they come up with that looks interesting.
A repair manual for the 1998 Buick Park Avenue would have a brakes repair diagram. A popular book is the Haynes Repair Manual.
ALTERNATOR OR THE BATTERY GROUND WIRE Have you tried checking your Alternator? I know this is why mine on my vehicle would not stay charged..
the cars are basically identical but the park avenue is better built with other wanted fetures most standered including leather seats buick park avenues throught 1997 thourgh 2005 the park avenue is about 12" longer than the lesabre i would u buy a park avenue any day over the leasbre both are great cars but for the money the buick park avenue is the way to go .
The ground cable could be bad as well as check all cables for corrosion.