Tinny Rattle

[tjfdesmo]

I rolled under my truck for a minute looking for the source of an annoying rattle that occurs at startup, and around 1300-1500 RPM +/-. Only had a little time and I didn't have a helper to start the truck or get it to the right RPM, so I was poking around and banging/shaking trying to duplicate it. Found a heat shield near the trans pan that was suspicious, but that was not the problem. I did notice that the shell/cover on the knock sensor was really loose. Has anybody else noticed this? I may try to find a way to secure them to see if it is my rattle.

 

[tjfdesmo]

Spent another few minutes poking and prodding today. Found another heat shield back by the muffler that rattled pretty bad. Put a little tweak in that to give a little clearance. Got back up front to check out the knock sensor deal and found that the right side has a cover that snaps on, and the left side has none. Can someone confirm this is correct, or am I missing one? The one on the right was bent up, as though it got squished on installation. I removed it and re-configured it, and now it snaps properly onto the connector, and doesn't seem as loose and rattle prone as before.