Ok well, a bit of an update. I drove it around a bit last night, and here's what I have. The vibe is a constant thing- no specific speed where it kicks on or off, but it is noticeable at about 20-25 and up. Below about 20, it's there, but very very faint. There is no difference between accel and decel- constantly there. Putiing it in to neutral while at speed did not help, so I think I can eliminate engine components factoring into it. I checked things underneath, and it all seems to be tight.
However, while driving some last night, I noticed that my steering wheel is shaking in my hand some. By the time I got back from the Rockies game last night, I was too tired to look again, but I think that might be a factor, so I will need to check all my front end components tonight for tightness...but is there anything else anyone can think of to check? I didn't get my DS pulled, so any balancing will have to wait until at least tomorrow.
REDLYNER Racing #4550
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