Weak Sunroof?
 

My sunroof on my 88 TII opens good with a little push and closes perfectly but If I try tpo open it by just holding the button it won't open, what could be the cause of this?

they all have a slight problem after a while that was on all sunroof models just if anything clean out the tracks and spray some new lithium grease and check if no that i know of it happens alot..
TwEaK

every FC I've been in needs a bit of a boost when raising the sunroof...very common. Just keep the rails cleaned and lubed and you shouldn't have any problems.