'POP' noise after sitting for a while???????

[duckbill]

My 2004 F-250 is a second vehicle, so it mostly sits in the driveway throughout the week and then gets used on the weekends. What I find is that, after it sits for a while, when I get in it and pull out of the driveway, something pops and it sounds like its coming from the front driver side. After that initial pop, it won't do it again until the truck sits for a while. Any idea what that might be? Ball joints are new, could it be an end link? Not sure how to investigate since I don't want to get run over trying to figure out exactly where the noise is coming from. Other problem is that if I can't find the noise the first time, I would have to wait a while to try it again.

[amdriven2liv]

Pop or more of a thud?

Thud would be the blend door.

[duckbill]

I think it could be characterized as a thud. Blend door? It won't make the noise until I accelerate, then it makes the pop noise like something in the front suspension is giving.

[PGreenSVT]

When I sit for a while and get going again it's usually my left hip that pops. Oh wait, you're talking about your truck.

[emperorjordan]

This does not fit your description but the compressor for the AC which is also on in defrost mode or blend mode will make a decently loud TISK sound periodically. It could just be that you are hearing and your brain is trying to associate it with suspension movement.

[duckbill]

I don't think it's the AC compressor. I'm going to climb under there and try to wiggle everything this weekend and see if anything is loose.

[g2shuck]

keep us posted mine has ALWAYS done this and front end is all brand new with less than 10k... like you said does it once and goes away so I never worry about it

[MacDougall]

mine does the exact same thing and it seems way to loud to be the blend door its pretty loud but only does it once and its gone.

[shawnb99]

same boat here.... 04 250 all stock, when mine sits over nightand i BACK out of the driveway, proceed to accelerate forward. POP ! i have given up as to everything being fine, i feel it is either the leafs or sway bar links loading up, or calipers shifting. my truck has 75000 miles, and drives like new.

not to say there is nothing weak, but i know suspensions and everthing seems fine. hell it could be balljoints making the transition from rearward force to forward force.

[nylyon]

Maybe the driveshaft binding?