Knocking sound when I hit bumps..

This post is gonna be pretty broad because its hard for me to describe whats going on. When I run over speed humps I hear a knocking sound coming from where I think is the front left tire area. I kinda sounds like something is possibly broken or loose. I can also feel it in my steering wheel. I lifted her up today and looked around and I didnt see anything broken or leaking. I also grabbed the tire to see if there was any play, and nothing. Took it offroading earlier today and it was pretty bad, but nothing seems to be affected by it. Can anyone give any insight on what this could possibly be?

 

Jamming the rigid mud flap on the speed bump?

 

+1. This would be my guess. I hear it all the time, I will cut them soon though.

 

I'm thinking either a bad/blown shock or loose steering rack since you can feel it in your steering wheel. Do you know if your steering rack bushings have been replaced yet? If not, I think you're do for a change. Get some replacement poly ones for sure, you'll feel the difference like night and day.

 

Gonna try this out first. Don't know if they have been replaced, bought it used 6 months ago, but doubt they have. Are these easy to replace?

 

It should be not too difficult:

http://parksoffroad.com/tacomamods/kristacoma/rackbushings/rackbushings.htm
http://www.chaosfab.com/pdf/96701.pdf

Make sure you have a big fu*king breaker bar too.