front end knocking noise on deceleration

se4n · Post by **se4n** » 29 Mar 2011, 06:50

Hi,
I replaced the left control arm on my 98 V70 yesterday and the repair was uneventful. I properly lifted the wheel before torquing down the frame bolts and tightened everything to spec. I drove it shortly last night and everything seemed fine. I just drove for a couple of miles this morning, and now there's a rather loud knocking noise when I lift off the gas pedal. The frequency is consistent with speed: as the cars slows, so does the sound. It goes away when I accelerate and goes away when I apply the brakes. I won't be able to get the car in the air until later today, but I took a quick look and didn't notice anything out of order.

Any ideas where to start? Axle? Tie rod?

Post by **jblackburn** » 29 Mar 2011, 06:52

That sounds like the wheel hub bearing.

Go back and re-tighten all your lug nuts now that the car is sitting on the ground. Common mistake.

se4n · Post by **se4n** » 29 Mar 2011, 06:58

Oh crap! That's it! I feel like an idiot. I was in a hurry because it was getting dark and I didn't fully torque down the lug bolts after getting the car off the jack stands. Thank you! The quote in your signature is perfect for this situation.

Post by **jblackburn** » 29 Mar 2011, 07:23

I've done it too.