I am trying to find a diagram of the front suspension so that I can identify the name of the part that is hanging loose. I have been doing internet searches and found nothing except a link to this website.

You can do an internet search using the suspension parts and your exact make , year, and model as terms and see what you find. Youtube has some videos of the repairs you may need for free.

Try the parts dept of the nearest Ford dealership. They often have
'exploded' views of many of the autos parts - perhaps they may
copy the page for you. These views are usually numerically labeled,
so get the page that gives part names that correspond to the labels,
also. If they are hesitant to do this for you, remind them that you may
be buying the parts from them, once you identify the problem...
Also, most auto parts stores have service manuals for common auto
makes... usually $25-$30. (no, I don't get a penny :-) )
Good luck!

Best bet go to library see if they have manual there then look under front end

Its probably the stabilizer bar or part of it.
You can go to the auto parts online stores and look up suspension parts for your make and model to see photos of the parts.

Try this link https://www.google.co.uk/search?q=citroen+c2+front+suspension+diagram&ie=UTF-8&oe=UTF-8&hl=en&client=safari

Warranty should be taking care of this problem, but look for missing or damaged rubber parts in the 'anti-roll-bar' mechanism and the rear shock absorber ends. It would help to identify which end of the car it is coming from. Make sure the sliding doors fit tightly. Try 'bouncing' the van at each corner to help identify the noise. The front struts could have an internal problem. Try shaking the front and rear wheels when on the hoist. Hope this helps!

Problem is that most "ramp" type lifts have become obsolete. As you said, you can't find anything with the suspension hanging (bushings are loaded)
Try checking it on the ground or up on four drive on ramps (careful though).
And, shame on that dealer for not trying harder!!!

This could be a cv joint or a worn or loose suspension part. You should take the car to your mechanic, have it put up on a hoist, and try to determine where the fault is. Your mechanic (or you) can use a pry bar to check some suspension parts for excessive play. It's impossible to identify the exact cause without examining the suspension in the way that I have described. Good luck and may your repairs be cheap!

if its noisy, something is bad wrong. lift it up and have one your kidsturn the steering wheel and look for anything loose. I would not have purchased any car that had been hacked like that. ck ball joints, ck for any loose bolts, ck everything you can see. dont drive it intil you find and repair what is wrong. without knowing what is wrong, i would say it coulld be dangerous.

try www.autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you or you can try www.schramauto.com or call them at 1-800-292-1032