When it is flickering, it might be also a problem with the mapping into Zmodeler, outside of the texture. You have to replace all the mapping parts into the texture.
Check your mapping and post a picture please...
Edit:
If you don't see what I mean, select all the faces of your car, then, Surface/ Mapping/ Assign UV and click on one of the faces (SEL activated), you should have something like this ( all the mapping must be into the square)
If not, select the faces by material and check for each texture...
____________________________________________________________________________________________________________________________________________ Edited 5 time(s). Last edit at 03/17/2013 03:29PM by Excalibur.