Knocking in rear

[ginandjuice]

This morning I was backing out my car from the driveway, and as I got onto the street ready to shift into drive, I heard this very fast knocking noise in the rear. It must have been 3-4 seconds straight. It sounded like someone was in the trunk! Any idea on what it could be??

[4kQuad]

Front wheel drive car...so no power system problems. Brakes might be having problems, but symptoms sounds wrong.

My best bet, Pop the trunk lid and look for a 2 liter of pop rolling around.

[LoneRangers15]

I would check the brakes. I had a caliper bolt that wasn't tightened correctly and it fell out causing the caliper to hit my rear wheel.

[grandamjoe]

Check your struts. When their bad it sounds like something is in your trunk, a knocking sound. They may be leaking .

[rixGAphx]

Release your Trunk Monkey!! :D :D