Any ideas??

I've noticed lately when backing my truck first thing in the morning that there is a popping noise when it's rolling. It sounds like it's coming from the front end. I have an "06 Prerunner with 86000 miles. Any ideas on what it could be?

 

Front differential maybe

 

Well, it's 2 wheel drive and only happens when it's cold....or at least that's when it's noticeable. Sounds like front end but, maybe the front U joint...idk

 

ball joint...mine does this on rigth front. when cold. and rigt when i engage in reverse and turn the wheel

 

Workman also has heard this noise when super cold out recently. He drives an 06 4x4, also with exactly 86000K! He has never heard the noise when it wasn't cold out....future ball joint problems??

 

Thanks guys! I guess I know what I'll be doing this weekend.....