Well guys its been a while since I've been on here, but my Blazer just started doing something goofy within the last 20 minutes. I took it for a little drive around time to get it warmed up because its like -5 here in Ohio, didn't beat on it or anything until I pulled onto my college campus. By then it was fully warmed up so I decided I wanted to do a few 4x4 donuts. Go to park it and now I noticed it has a slight vibration that's relative to engine speed. The engine sounds fine, no knocks, ticks, clunks, or bangs, which leads me to thing it has something to do with the accessory drive. Bad water pump/alternator bearings possibly? The alternator was replaced probably 7k ago, and the water pump is original I think. It does have 180k on it. Thanks for your help in advance guys!!

 

Maybe the donuts had a snack on a motor mount, -5 14 yr old rubber get's a bit crisp at those temps.


Man bites dog.

 

I agree, I'd look at the motor mounts first.

 

I'd check the fan.

 

That was one of my thoughts. I don't know what it was but it didn't do it all day today, so I have no clue. I did figure out that my idler pulley is shot, I can move the damn thing back and forth with the belt on. Looks like its time for a new one! Lol

 

Ya man that would do it.