ACDelco....I put a MOOG Problem Solver idler arm on my other B-Body (RMS), and couldn't really tell a difference. That's why I went with Delco on this one.I see up and down movement in the Idler Arm.
What brand did you replace it with? I have had bad luck (parts store parts) with anything that didn't say MOOG Problem Solver on it. Went through a couple cheapies on the sedan I had.
What you need is an assistant--you're looking for motion between the pitman arm (bottom of steering gear) and the center link, when the steering wheel is turned.How do you tell if the center link is shot?