Today i gave my friends car a jump because his battery died. I noticed that after i hooked up the juper cables my engine made a very loud screach that sounded like it came from the belts. I remember a while ago it did the same thing when i helped someone else get their car started. Has anyone noticed this with other Z's? It also does it sometimes when i first start the car... i replaced the belts recently, so it isn't just old belts... Any ideas? Thanks!