Cadillac STS Forum - 2005 through 2012 Discussion, Engine Air Filter in Past Cadillac Vehicle Discussion; Got a few warm days, so decided to change the Engine Air Filter.
Looked for it at Wal-Mart, and could ...
Got a few warm days, so decided to change the Engine Air Filter.
Looked for it at Wal-Mart, and could NOT find it, Nor in their filter book.
So decided to get an OEM.
I always clean as much of the very,very,very,very fine dust that got through
the filter, and plated on the piping going to the Throttle assembly.
So I used water to clean ALL the stuff I could to get this dust OFF.
Dried everything and reassembled,PITA,to catch the bottom of the
cover for the filter, two 4 fingered, fingers, hold the bottom, and
two phillips screws hold the top.Seems to run better at very low speeds,
NOT tested @ WOT.
BTW: the AC Delco number is A2944C or the OEM is: 25798271
I changed engine air filter myself too a few weeks ago. Actually it is the best to remove the whole filter box as it is the easiest way to change the filter insert. I disconnected the MAS and untighten the metal ring connecting the box to air intake, then two hex screws are holding the filter
box, one close to the driver side front light assembly and one on the back on the strut wall or how it is called. There is enough play in coolant
hose to move it to the back side and then the box is easily removed. I took it home and cleaned it and I could see what way the original filter
sits in. I bought a Wix filter, I was considering for a while K&N but I got afraid of a need to apply some special oil to it. Filter was dirty as hell, engine breaths now much better and fuel efficiency increased a bit. I changed also a cabin filter while at it, sort of bigger PITA than engine air filter to change. I changed it to a non-active carbon one, I cleaned the old one with carbon with a hoover and I guess I will put it back, cause the one with no carbon transmits more smells.